{"pageNumber":"695","pageRowStart":"17350","pageSize":"25","recordCount":46883,"records":[{"id":70034332,"text":"70034332 - 2011 - Epistemic uncertainty in California-wide synthetic seismicity simulations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:46","indexId":"70034332","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Epistemic uncertainty in California-wide synthetic seismicity simulations","docAbstract":"The generation of seismicity catalogs on synthetic fault networks holds the promise of providing key inputs into probabilistic seismic-hazard analysis, for example, the coefficient of variation, mean recurrence time as a function of magnitude, the probability of fault-to-fault ruptures, and conditional probabilities for foreshock-mainshock triggering. I employ a seismicity simulator that includes the following ingredients: static stress transfer, viscoelastic relaxation of the lower crust and mantle, and vertical stratification of elastic and viscoelastic material properties. A cascade mechanism combined with a simple Coulomb failure criterion is used to determine the initiation, propagation, and termination of synthetic ruptures. It is employed on a 3D fault network provided by Steve Ward (unpublished data, 2009) for the Southern California Earthquake Center (SCEC) Earthquake Simulators Group. This all-California fault network, initially consisting of 8000 patches, each of ~12 square kilometers in size, has been rediscretized into ~100;000 patches, each of ~1 square kilometer in size, in order to simulate the evolution of California seismicity and crustal stress at magnitude M ~ 5-8. Resulting synthetic seismicity catalogs spanning 30,000 yr and about one-half million events are evaluated with magnitude-frequency and magnitude-area statistics. For a priori choices of fault-slip rates and mean stress drops, I explore the sensitivity of various constructs on input parameters, particularly mantle viscosity. Slip maps obtained for the southern San Andreas fault show that the ability of segment boundaries to inhibit slip across the boundaries (e.g., to prevent multisegment ruptures) is systematically affected by mantle viscosity.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120100303","issn":"00371106","usgsCitation":"Pollitz, F., 2011, Epistemic uncertainty in California-wide synthetic seismicity simulations: Bulletin of the Seismological Society of America, v. 101, no. 5, p. 2481-2498, https://doi.org/10.1785/0120100303.","startPage":"2481","endPage":"2498","numberOfPages":"18","costCenters":[],"links":[{"id":216917,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120100303"},{"id":244818,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"101","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-09-26","publicationStatus":"PW","scienceBaseUri":"505a0a16e4b0c8380cd521ca","contributors":{"authors":[{"text":"Pollitz, F. F.","contributorId":108280,"corporation":false,"usgs":true,"family":"Pollitz","given":"F. F.","affiliations":[],"preferred":false,"id":445270,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034331,"text":"70034331 - 2011 - Evaluation of influence of sediment on the sensitivity of a unionid mussel (Lampsilis siliquoidea) to ammonia in 28-day water exposures","interactions":[],"lastModifiedDate":"2018-11-02T14:47:54","indexId":"70034331","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of influence of sediment on the sensitivity of a unionid mussel (Lampsilis siliquoidea) to ammonia in 28-day water exposures","docAbstract":"A draft update of the U.S. Environmental Protection Agency ambient water quality criteria (AWQC) for ammonia substantially lowers the ammonia AWQC, primarily due to the inclusion of toxicity data for freshwater mussels. However, most of the mussel data used in the updated AWQC were generated from water-only exposures and limited information is available on the potential influence of the presence of a substrate on the response of mussels in laboratory toxicity tests. Our recent study demonstrated that the acute sensitivity of mussels to ammonia was not influenced by the presence of substrate in 4-d laboratory toxicity tests. The objective of the current study was to determine the sensitivity of mussels to ammonia in chronic 28-d water exposures with the sediment present (sediment treatment) or absent (water-only treatment). The chronic toxicity test was conducted starting with two-month-old juvenile mussels (fatmucket, Lampsilis siliquoidea) in a flow-through diluter system, which maintained consistent pH (???8.3) and six concentrations of total ammonia nitrogen (N) in overlying water and in sediment pore water. The chronic value (ChV, geometric mean of the no-observed-effect concentration and the lowest-observed-effect concentration) was 0.36mgN/L for survival or biomass in the water-only treatment, and was 0.66mgN/L for survival and 0.20mgN/L for biomass in the sediment treatment. The 20% effect concentration (EC20) for survival was 0.63mgN/L in the water-only treatment and was 0.86mgN/L in the sediment treatment (with overlapping 95% confidence intervals; no EC20 for biomass was estimated because the data did not meet the conditions for any logistic regression analysis). The similar ChVs or EC20s between the water-only treatment and the sediment treatment indicate that the presence of sediment did not substantially influence the sensitivity of juvenile mussels to ammonia in the 28-d chronic laboratory water exposures. ?? 2011 SETAC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Toxicology and Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/etc.616","issn":"07307268","usgsCitation":"Wang, N., Consbrock, R., Ingersoll, C., and Barnhart, M., 2011, Evaluation of influence of sediment on the sensitivity of a unionid mussel (Lampsilis siliquoidea) to ammonia in 28-day water exposures: Environmental Toxicology and Chemistry, v. 30, no. 10, p. 2270-2276, https://doi.org/10.1002/etc.616.","productDescription":"7 p.","startPage":"2270","endPage":"2276","numberOfPages":"7","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":34983,"text":"Contaminant Biology Program","active":true,"usgs":true}],"links":[{"id":244817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216916,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/etc.616"}],"volume":"30","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-10-01","publicationStatus":"PW","scienceBaseUri":"505a0c8ae4b0c8380cd52bb9","contributors":{"authors":[{"text":"Wang, N.","contributorId":81615,"corporation":false,"usgs":true,"family":"Wang","given":"N.","email":"","affiliations":[],"preferred":false,"id":445267,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Consbrock, R.A.","contributorId":81721,"corporation":false,"usgs":true,"family":"Consbrock","given":"R.A.","affiliations":[],"preferred":false,"id":445268,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ingersoll, C.G. 0000-0003-4531-5949","orcid":"https://orcid.org/0000-0003-4531-5949","contributorId":56338,"corporation":false,"usgs":true,"family":"Ingersoll","given":"C.G.","affiliations":[],"preferred":false,"id":445266,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Barnhart, M.C.","contributorId":107410,"corporation":false,"usgs":true,"family":"Barnhart","given":"M.C.","affiliations":[],"preferred":false,"id":445269,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034327,"text":"70034327 - 2011 - High-precision measurement of variations in calcium isotope ratios in urine by multiple collector inductively coupled plasma mass spectrometry","interactions":[],"lastModifiedDate":"2012-07-14T01:01:39","indexId":"70034327","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"High-precision measurement of variations in calcium isotope ratios in urine by multiple collector inductively coupled plasma mass spectrometry","docAbstract":"We describe a new chemical separation method to isolate Ca from other matrix elements in biological samples, developed with the long-term goal of making high-precision measurement of natural stable Ca isotope variations a clinically applicable tool to assess bone mineral balance. A new two-column procedure utilizing HBr achieves the purity required to accurately and precisely measure two Ca isotope ratios (<sup>44</sup>Ca/<sup>42</sup>Ca and <sup>44</sup>Ca/<sup>43</sup>Ca) on a Neptune multiple collector inductively coupled plasma mass spectrometer (MC-ICPMS) in urine. Purification requirements for Sr, Ti, and K (Ca/Sr &gt; 10000; Ca/Ti &gt; 10000000; and Ca/K &gt; 10) were determined by addition of these elements to Ca standards of known isotopic composition. Accuracy was determined by (1) comparing Ca isotope results for samples and standards to published data obtained using thermal ionization mass spectrometry (TIMS), (2) adding a Ca standard of known isotopic composition to a urine sample purified of Ca, and (3) analyzing mixtures of urine samples and standards in varying proportions. The accuracy and precision of &delta;<sup>44/42</sup>Ca measurements of purified samples containing 25 &mu;g of Ca can be determined with typical errors less than &plusmn;0.2&permil; (2&sigma;).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"ACS Publications","publisherLocation":"Washington, D.C","doi":"10.1021/ac200361t","issn":"00032700","usgsCitation":"Morgan, J., Gordon, G., Arrua, R., Skulan, J., Anbar, A., and Bullen, T., 2011, High-precision measurement of variations in calcium isotope ratios in urine by multiple collector inductively coupled plasma mass spectrometry: Analytical Chemistry, v. 83, no. 18, p. 6956-6962, https://doi.org/10.1021/ac200361t.","productDescription":"5 p.","startPage":"6956","endPage":"6962","numberOfPages":"7","costCenters":[{"id":628,"text":"Water Resources Discipline","active":false,"usgs":true}],"links":[{"id":216825,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/ac200361t"},{"id":244720,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"83","issue":"18","noUsgsAuthors":false,"publicationDate":"2011-08-18","publicationStatus":"PW","scienceBaseUri":"505a30f2e4b0c8380cd5dac3","contributors":{"authors":[{"text":"Morgan, J.L.L.","contributorId":75785,"corporation":false,"usgs":true,"family":"Morgan","given":"J.L.L.","email":"","affiliations":[],"preferred":false,"id":445254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gordon, G.W.","contributorId":76971,"corporation":false,"usgs":true,"family":"Gordon","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":445255,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arrua, R.C.","contributorId":50011,"corporation":false,"usgs":true,"family":"Arrua","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":445253,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Skulan, J.L.","contributorId":13064,"corporation":false,"usgs":true,"family":"Skulan","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":445251,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Anbar, A.D.","contributorId":36365,"corporation":false,"usgs":true,"family":"Anbar","given":"A.D.","affiliations":[],"preferred":false,"id":445252,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bullen, T.D.","contributorId":79911,"corporation":false,"usgs":true,"family":"Bullen","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":445256,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034316,"text":"70034316 - 2011 - 40Ar* loss in experimentally deformed muscovite and biotite with implications for 40Ar/39Ar geochronology of naturally deformed rocks","interactions":[],"lastModifiedDate":"2021-04-22T16:56:26.522573","indexId":"70034316","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"40Ar* loss in experimentally deformed muscovite and biotite with implications for 40Ar/39Ar geochronology of naturally deformed rocks","docAbstract":"<p id=\"sp005\">The effects of deformation on radiogenic argon (<sup>40</sup>Ar<sup>∗</sup>) retentivity in mica are described from high pressure experiments performed on rock samples of peraluminous granite containing euhedral muscovite and biotite. Cylindrical cores, ∼15&nbsp;mm in length and 6.25&nbsp;mm in diameter, were drilled from granite collected from the South Armorican Massif in northwestern France, loaded into gold capsules, and weld-sealed in the presence of excess water. The samples were deformed at a pressure of 10&nbsp;kb and a temperature of 600&nbsp;°C over a period 29 of hours within a solid medium assembly in a Griggs-type triaxial hydraulic deformation apparatus. Overall shortening in the experiments was approximately 10%. Transmitted light and secondary and backscattered electron imaging of the deformed granite samples reveals evidence of induced defects and for significant physical grain size reduction by kinking, cracking, and grain segmentation of the micas.</p><p id=\"sp010\">Infrared (IR) laser (CO<sub>2</sub>) heating of individual 1.5–2.5&nbsp;mm diameter grains of muscovite and biotite separated from the undeformed granite yield well-defined<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar plateau ages of 311&nbsp;±&nbsp;2&nbsp;Ma (2σ). Identical experiments on single grains separated from the experimentally deformed granite yield results indicating<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss of 0–35% in muscovite and 2–3%<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss in biotite. Intragrain<span>&nbsp;</span><i>in situ</i><span>&nbsp;</span>ultraviolet (UV) laser ablation<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar ages (±4–10%, 1σ) of deformed muscovites range from 309&nbsp;±&nbsp;13 to 264&nbsp;±&nbsp;7&nbsp;Ma, consistent with 0–16%<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss relative to the undeformed muscovite. The<span>&nbsp;</span><i>in situ</i><span>&nbsp;</span>UV laser ablation<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar ages of deformed biotite vary from 301 to 217&nbsp;Ma, consistent with up to 32%<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss. No spatial correlation is observed between<span>&nbsp;</span><i>in situ</i><span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar age and position within individual grains. Using available argon diffusion data for muscovite the observed<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss in the experimentally treated muscovite can be utilized to predict average<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>diffusion dimensions. Maximum<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar ages obtained by UV laser ablation overlap those of the undeformed muscovite, indicating argon loss of &lt;1% and an average effective grain radius for<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>diffusion ⩾700&nbsp;μm. The UV laser ablation and IR laser incremental<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar ages indicating<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>loss of 16% and 35%, respectively, are consistent with an average diffusion radius ≪100&nbsp;μm. These results support a hypothesis of grain-scale<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>diffusion distances in undeformed mica and a heterogeneous mechanical reduction in the intragrain effective diffusion length scale for<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>in deformed mica. Reduction in the effective diffusion length scale in naturally deformed samples occurs most probably through production of mesoscopic and submicroscopic defects such as, e.g., stacking faults. A network of interconnected defects, continuously forming and annealing during dynamic deformation likely plays an important role in controlling both<span>&nbsp;</span><sup>40</sup>Ar<sup>∗</sup><span>&nbsp;</span>retention and intragrain distribution in deformed mica. Intragrain<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar ages, when combined with estimates of diffusion kinetics and distances, may provide a means of establishing thermochronological histories from individual micas.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2011.10.012","issn":"00167037","usgsCitation":"Cosca, M., Stunitz, H., Bourgeix, A., and Lee, J., 2011, 40Ar* loss in experimentally deformed muscovite and biotite with implications for 40Ar/39Ar geochronology of naturally deformed rocks: Geochimica et Cosmochimica Acta, v. 75, no. 24, p. 7759-7778, https://doi.org/10.1016/j.gca.2011.10.012.","productDescription":"20 p.","startPage":"7759","endPage":"7778","costCenters":[],"links":[{"id":244557,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216672,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gca.2011.10.012"}],"volume":"75","issue":"24","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e25ee4b0c8380cd45b0d","contributors":{"authors":[{"text":"Cosca, M. 0000-0002-0600-7663","orcid":"https://orcid.org/0000-0002-0600-7663","contributorId":107417,"corporation":false,"usgs":true,"family":"Cosca","given":"M.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":445213,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stunitz, H.","contributorId":44385,"corporation":false,"usgs":true,"family":"Stunitz","given":"H.","affiliations":[],"preferred":false,"id":445212,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bourgeix, A.-L.","contributorId":10250,"corporation":false,"usgs":true,"family":"Bourgeix","given":"A.-L.","email":"","affiliations":[],"preferred":false,"id":445210,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lee, J.P.","contributorId":21373,"corporation":false,"usgs":true,"family":"Lee","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":445211,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034315,"text":"70034315 - 2011 - USGS remote sensing coordination for the 2010 Haiti earthquake","interactions":[],"lastModifiedDate":"2017-04-06T12:29:10","indexId":"70034315","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"USGS remote sensing coordination for the 2010 Haiti earthquake","docAbstract":"<p>In response to the devastating 12 January 2010, earthquake in Haiti, the US Geological Survey (USGS) provided essential coordinating services for remote sensing activities. Communication was rapidly established between the widely distributed response teams and data providers to define imaging requirements and sensor tasking opportunities. Data acquired from a variety of sources were received and archived by the USGS, and these products were subsequently distributed using the Hazards Data Distribution System (HDDS) and other mechanisms. Within six weeks after the earthquake, over 600,000 files representing 54 terabytes of data were provided to the response community. The USGS directly supported a wide variety of groups in their use of these data to characterize post-earthquake conditions and to make comparisons with pre-event imagery. The rapid and continuing response achieved was enabled by existing imaging and ground systems, and skilled personnel adept in all aspects of satellite data acquisition, processing, distribution and analysis. The information derived from image interpretation assisted senior planners and on-site teams to direct assistance where it was most needed.</p>","language":"English","publisher":"Ingenta","doi":"10.14358/PERS.77.9.899","issn":"00991112","usgsCitation":"Duda, K., and Jones, B., 2011, USGS remote sensing coordination for the 2010 Haiti earthquake: Photogrammetric Engineering and Remote Sensing, v. 77, no. 9, p. 899-908, https://doi.org/10.14358/PERS.77.9.899.","productDescription":"10 p.","startPage":"899","endPage":"908","numberOfPages":"10","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":475348,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14358/pers.77.9.899","text":"Publisher Index Page"},{"id":244525,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"77","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbbd7e4b08c986b32887a","contributors":{"authors":[{"text":"Duda, Kenneth A. duda@usgs.gov","contributorId":2915,"corporation":false,"usgs":true,"family":"Duda","given":"Kenneth A.","email":"duda@usgs.gov","affiliations":[],"preferred":false,"id":445209,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jones, Brenda 0000-0003-4941-5349 bkjones@usgs.gov","orcid":"https://orcid.org/0000-0003-4941-5349","contributorId":2994,"corporation":false,"usgs":true,"family":"Jones","given":"Brenda","email":"bkjones@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":423,"text":"National Geospatial Program","active":true,"usgs":true}],"preferred":true,"id":445208,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034313,"text":"70034313 - 2011 - Predicting breeding habitat for amphibians: A spatiotemporal analysis across Yellowstone National Park","interactions":[],"lastModifiedDate":"2021-04-22T17:01:03.465858","indexId":"70034313","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Predicting breeding habitat for amphibians: A spatiotemporal analysis across Yellowstone National Park","docAbstract":"<p><span>The ability to predict amphibian breeding across landscapes is important for informing land management decisions and helping biologists better understand and remediate factors contributing to declines in amphibian populations. We built geospatial models of likely breeding habitats for each of four amphibian species that breed in Yellowstone National Park (YNP). We used field data collected in 2000–2002 from 497 sites among 16 basins and predictor variables from geospatial models produced from remotely sensed data (e.g., digital elevation model, complex topographic index, landform data, wetland probability, and vegetative cover). Except for 31 sites in one basin that were surveyed in both 2000 and 2002, all sites were surveyed once. We used polytomous regression to build statistical models for each species of amphibian from (1) field survey site data only, (2) field data combined with data from geospatial models, and (3) data from geospatial models only. Based on measures of receiver operating characteristic (ROC) scores, models of the second type best explained likely breeding habitat because they contained the most information (ROC values ranged from 0.70 to 0.88). However, models of the third type could be applied to the entire YNP landscape and produced maps that could be verified with reserve field data. Accuracy rates for models built for single years were highly variable, ranging from 0.30 to 0.78. Accuracy rates for models built with data combined from multiple years were higher and less variable, ranging from 0.60 to 0.80. Combining results from the geospatial multiyear models yielded maps of “core” breeding areas (areas with high probability values for all three years) surrounded by areas that scored high for only one or two years, providing an estimate of variability among years. Such information can highlight landscape options for amphibian conservation. For example, our models identify alternative areas that could be protected for each species, including 6828–10 764 ha for tiger salamanders, 971–3017 ha for western toads, 4732–16 696 ha for boreal chorus frogs, and 4940–19 690 ha for Columbia spotted frogs.</span></p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/10-1261.1","issn":"10510761","usgsCitation":"Bartelt, P.E., Gallant, A.L., Klaver, R.W., Wright, C., Patla, D.A., and Peterson, C.R., 2011, Predicting breeding habitat for amphibians: A spatiotemporal analysis across Yellowstone National Park: Ecological Applications, v. 21, no. 7, p. 2530-2547, https://doi.org/10.1890/10-1261.1.","productDescription":"18 p.","startPage":"2530","endPage":"2547","costCenters":[],"links":[{"id":475420,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1890/10-1261.1","text":"Publisher Index Page"},{"id":244495,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216614,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/10-1261.1"}],"country":"United States","state":"Wyoming","otherGeospatial":"Yellowstone National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -111.0772705078125,\n              44.18614312298759\n            ],\n            [\n              -109.8907470703125,\n              44.18614312298759\n            ],\n            [\n              -109.8907470703125,\n              45.092913646051144\n            ],\n            [\n              -111.0772705078125,\n              45.092913646051144\n            ],\n            [\n              -111.0772705078125,\n              44.18614312298759\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"21","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a81aae4b0c8380cd7b670","contributors":{"authors":[{"text":"Bartelt, Paul E.","contributorId":18895,"corporation":false,"usgs":true,"family":"Bartelt","given":"Paul","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":445202,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gallant, Alisa L. 0000-0002-3029-6637 gallant@usgs.gov","orcid":"https://orcid.org/0000-0002-3029-6637","contributorId":2940,"corporation":false,"usgs":true,"family":"Gallant","given":"Alisa","email":"gallant@usgs.gov","middleInitial":"L.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":445200,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klaver, Robert W. 0000-0002-3263-9701 bklaver@usgs.gov","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":3285,"corporation":false,"usgs":true,"family":"Klaver","given":"Robert","email":"bklaver@usgs.gov","middleInitial":"W.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":445204,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wright, C.K.","contributorId":25780,"corporation":false,"usgs":true,"family":"Wright","given":"C.K.","affiliations":[],"preferred":false,"id":445201,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Patla, Debra A.","contributorId":40059,"corporation":false,"usgs":true,"family":"Patla","given":"Debra","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":445203,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Peterson, Charles R.","contributorId":95738,"corporation":false,"usgs":true,"family":"Peterson","given":"Charles","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":445199,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034308,"text":"70034308 - 2011 - Significant genetic differentiation between native and introduced silver carp (Hypophthalmichthys molitrix) inferred from mtDNA analysis","interactions":[],"lastModifiedDate":"2017-05-22T15:05:17","indexId":"70034308","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1528,"text":"Environmental Biology of Fishes","active":true,"publicationSubtype":{"id":10}},"title":"Significant genetic differentiation between native and introduced silver carp (Hypophthalmichthys molitrix) inferred from mtDNA analysis","docAbstract":"Silver carp Hypophthalmichthys molitrix (Cyprinidae) is native to China and has been introduced to over 80 countries. The extent of genetic diversity in introduced silver carp and the genetic divergence between introduced and native populations remain largely unknown. In this study, 241 silver carp sampled from three major native rivers and two non-native rivers (Mississippi River and Danube River) were analyzed using nucleotide sequences of mitochondrial COI gene and D-loop region. A total of 73 haplotypes were observed, with no haplotype found common to all the five populations and eight haplotypes shared by two to four populations. As compared with introduced populations, all native populations possess both higher haplotype diversity and higher nucleotide diversity, presumably a result of the founder effect. Significant genetic differentiation was revealed between native and introduced populations as well as among five sampled populations, suggesting strong selection pressures might have occurred in introduced populations. Collectively, this study not only provides baseline information for sustainable use of silver carp in their native country (i.e., China), but also offers first-hand genetic data for the control of silver carp in countries (e.g., the United States) where they are considered invasive.","language":"English","publisher":"Springer","publisherLocation":"Amsterdam, Netherlands","doi":"10.1007/s10641-011-9870-7","issn":"03781909","usgsCitation":"Li, S., Xu, J., Yang, Q., Wang, C., Chapman, D., and Lu, G., 2011, Significant genetic differentiation between native and introduced silver carp (Hypophthalmichthys molitrix) inferred from mtDNA analysis: Environmental Biology of Fishes, v. 92, no. 4, p. 503-511, https://doi.org/10.1007/s10641-011-9870-7.","productDescription":"9 p.","startPage":"503","endPage":"511","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":244434,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216556,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10641-011-9870-7"}],"volume":"92","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-06-18","publicationStatus":"PW","scienceBaseUri":"505b8f2be4b08c986b318d77","contributors":{"authors":[{"text":"Li, S.-F.","contributorId":49626,"corporation":false,"usgs":true,"family":"Li","given":"S.-F.","email":"","affiliations":[],"preferred":false,"id":445174,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xu, J.-W.","contributorId":78575,"corporation":false,"usgs":true,"family":"Xu","given":"J.-W.","email":"","affiliations":[],"preferred":false,"id":445176,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yang, Q.-L.","contributorId":107956,"corporation":false,"usgs":true,"family":"Yang","given":"Q.-L.","email":"","affiliations":[],"preferred":false,"id":445178,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wang, C.H.","contributorId":10244,"corporation":false,"usgs":true,"family":"Wang","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":445173,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chapman, D.C.","contributorId":101825,"corporation":false,"usgs":true,"family":"Chapman","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":445177,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lu, G.","contributorId":53189,"corporation":false,"usgs":true,"family":"Lu","given":"G.","email":"","affiliations":[],"preferred":false,"id":445175,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034302,"text":"70034302 - 2011 - LA-ICP-MS of magnetite: Methods and reference materials","interactions":[],"lastModifiedDate":"2021-04-22T20:47:55.496344","indexId":"70034302","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2155,"text":"Journal of Analytical Atomic Spectrometry","active":true,"publicationSubtype":{"id":10}},"title":"LA-ICP-MS of magnetite: Methods and reference materials","docAbstract":"<p>Magnetite<span>&nbsp;(Fe</span><small><sub>3</sub></small><span>O</span><small><sub>4</sub></small><span>) is a common accessory&nbsp;</span>mineral<span>&nbsp;in many geologic settings. Its variable geochemistry makes it a powerful petrogenetic&nbsp;</span>indicator<span>. Electron microprobe (</span>EMPA<span>) analyses are commonly used to examine major and minor element contents in&nbsp;</span>magnetite<span>.&nbsp;</span>Laser ablation ICP-MS<span>&nbsp;(</span>LA-ICP-MS<span>) is applicable to trace element analyses of&nbsp;</span>magnetite<span>&nbsp;but has not been widely employed to examine compositional variations. We tested the applicability of the NIST SRM 610, the USGS GSE-1G, and the NIST SRM 2782 reference materials (RMs) as external standards and developed a reliable method for&nbsp;</span>LA-ICP-MS<span>&nbsp;analysis of&nbsp;</span>magnetite<span>.&nbsp;</span>LA-ICP-MS<span>&nbsp;analyses were carried out on well characterized&nbsp;</span>magnetite<span>&nbsp;samples with a 193 nm, Excimer, ArF LA system. Although&nbsp;</span>matrix<span>-matched RMs are sometimes important for calibration and normalization of&nbsp;</span>LA-ICP-MS<span>&nbsp;data, we demonstrate that glass RMs can produce accurate results for&nbsp;</span>LA-ICP-MS<span>&nbsp;analyses of&nbsp;</span>magnetite<span>. Cross-comparison between the NIST SRM 610 and USGS GSE-1G indicates good agreement for&nbsp;</span>magnetite<span>&nbsp;minor and trace element data calibrated with either of these RMs. Many elements show a sufficiently good match between the LA-ICP-MS and the EMPA data; for example, Ti and V show a close to linear relationship with correlation coefficients,&nbsp;</span><i>R</i><small><sup>2</sup></small><span>&nbsp;of 0.79 and 0.85 respectively.</span></p>","language":"English","publisher":"Royal Society of Chemistry","doi":"10.1039/c1ja10105f","issn":"02679477","usgsCitation":"Nadoll, P., and Koenig, A., 2011, LA-ICP-MS of magnetite: Methods and reference materials: Journal of Analytical Atomic Spectrometry, v. 26, no. 9, p. 1872-1877, https://doi.org/10.1039/c1ja10105f.","productDescription":"6 p.","startPage":"1872","endPage":"1877","costCenters":[],"links":[{"id":244816,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216915,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1039/c1ja10105f"}],"volume":"26","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a40d5e4b0c8380cd65097","contributors":{"authors":[{"text":"Nadoll, P.","contributorId":70217,"corporation":false,"usgs":true,"family":"Nadoll","given":"P.","affiliations":[],"preferred":false,"id":445154,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koenig, A.E. 0000-0002-5230-0924","orcid":"https://orcid.org/0000-0002-5230-0924","contributorId":23679,"corporation":false,"usgs":true,"family":"Koenig","given":"A.E.","affiliations":[],"preferred":false,"id":445153,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034296,"text":"70034296 - 2011 - Modeling the height of young forests regenerating from recent disturbances in Mississippi using Landsat and ICESat data","interactions":[],"lastModifiedDate":"2018-02-23T12:48:07","indexId":"70034296","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Modeling the height of young forests regenerating from recent disturbances in Mississippi using Landsat and ICESat data","docAbstract":"<p><span>Many forestry and earth science applications require spatially detailed forest height data sets. Among the various remote sensing technologies, lidar offers the most potential for obtaining reliable height measurement. However, existing and planned spaceborne lidar systems do not have the capability to produce spatially contiguous, fine resolution forest height maps over large areas. This paper describes a Landsat–lidar fusion approach for modeling the height of young forests by integrating historical Landsat observations with lidar data acquired by the Geoscience Laser Altimeter System (GLAS) instrument onboard the Ice, Cloud, and land Elevation (ICESat) satellite. In this approach, “young” forests refer to forests reestablished following recent disturbances mapped using Landsat time-series stacks (LTSS) and a vegetation change tracker (VCT) algorithm. The GLAS lidar data is used to retrieve forest height at sample locations represented by the footprints of the lidar data. These samples are used to establish relationships between lidar-based forest height measurements and LTSS–VCT disturbance products. The height of “young” forest is then mapped based on the derived relationships and the LTSS–VCT disturbance products. This approach was developed and tested over the state of Mississippi. Of the various models evaluated, a regression tree model predicting forest height from age since disturbance and three cumulative indices produced by the LTSS–VCT method yielded the lowest cross validation error. The R</span><sup>2</sup><span> and root mean square difference (RMSD) between predicted and GLAS-based height measurements were 0.91 and 1.97&nbsp;m, respectively. Predictions of this model had much higher errors than indicated by cross validation analysis when evaluated using field plot data collected through the Forest Inventory and Analysis Program of USDA Forest Service. Much of these errors were due to a lack of separation between stand clearing and non-stand clearing disturbances in current LTSS–VCT products and difficulty in deriving reliable forest height measurements using GLAS samples when terrain relief was present within their footprints. In addition, a systematic underestimation of about 5&nbsp;m by the developed model was also observed, half of which could be explained by forest growth that occurred between field measurement year and model target year. The remaining difference suggests that tree height measurements derived using waveform lidar data could be significantly underestimated, especially for young pine forests. Options for improving the height modeling approach developed in this study were discussed.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2011.03.001","issn":"00344257","usgsCitation":"Li, A., Huang, C., Sun, G., Shi, H., Toney, C., Zhu, Z., Rollins, M.G., Goward, S.N., and Masek, J.G., 2011, Modeling the height of young forests regenerating from recent disturbances in Mississippi using Landsat and ICESat data: Remote Sensing of Environment, v. 115, no. 8, p. 1837-1849, https://doi.org/10.1016/j.rse.2011.03.001.","productDescription":"13 p.","startPage":"1837","endPage":"1849","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":244747,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216851,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2011.03.001"}],"volume":"115","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5c46e4b0c8380cd6fb68","contributors":{"authors":[{"text":"Li, Ainong","contributorId":202742,"corporation":false,"usgs":false,"family":"Li","given":"Ainong","email":"","affiliations":[],"preferred":false,"id":445131,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Huang, Chengquan 0000-0003-0055-9798","orcid":"https://orcid.org/0000-0003-0055-9798","contributorId":198972,"corporation":false,"usgs":false,"family":"Huang","given":"Chengquan","email":"","affiliations":[{"id":7261,"text":"Department of Geographical Sciences, University of Maryland, College Park, MD, 20742","active":true,"usgs":false}],"preferred":false,"id":445129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sun, Guoqing","contributorId":202743,"corporation":false,"usgs":false,"family":"Sun","given":"Guoqing","email":"","affiliations":[],"preferred":false,"id":445125,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shi, Hua 0000-0001-7013-1565 hshi@usgs.gov","orcid":"https://orcid.org/0000-0001-7013-1565","contributorId":646,"corporation":false,"usgs":true,"family":"Shi","given":"Hua","email":"hshi@usgs.gov","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":445130,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Toney, Chris","contributorId":86598,"corporation":false,"usgs":true,"family":"Toney","given":"Chris","email":"","affiliations":[],"preferred":false,"id":445128,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhu, Zhiliang 0000-0002-6860-6936 zzhu@usgs.gov","orcid":"https://orcid.org/0000-0002-6860-6936","contributorId":150078,"corporation":false,"usgs":true,"family":"Zhu","given":"Zhiliang","email":"zzhu@usgs.gov","affiliations":[{"id":505,"text":"Office of the AD Climate and Land-Use Change","active":true,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":5055,"text":"Land Change Science","active":true,"usgs":true},{"id":411,"text":"National Climate Change and Wildlife Science Center","active":true,"usgs":true}],"preferred":true,"id":445126,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rollins, Matthew G.","contributorId":54695,"corporation":false,"usgs":true,"family":"Rollins","given":"Matthew","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":445127,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Goward, Samuel N.","contributorId":44459,"corporation":false,"usgs":true,"family":"Goward","given":"Samuel","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":445132,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Masek, Jeffery G.","contributorId":87438,"corporation":false,"usgs":true,"family":"Masek","given":"Jeffery","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":445133,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70034280,"text":"70034280 - 2011 - Estimating Hydraulic Parameters When Poroelastic Effects Are Significant","interactions":[],"lastModifiedDate":"2012-03-12T17:21:47","indexId":"70034280","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Estimating Hydraulic Parameters When Poroelastic Effects Are Significant","docAbstract":"For almost 80 years, deformation-induced head changes caused by poroelastic effects have been observed during pumping tests in multilayered aquifer-aquitard systems. As water in the aquifer is released from compressive storage during pumping, the aquifer is deformed both in the horizontal and vertical directions. This deformation in the pumped aquifer causes deformation in the adjacent layers, resulting in changes in pore pressure that may produce drawdown curves that differ significantly from those predicted by traditional groundwater theory. Although these deformation-induced head changes have been analyzed in several studies by poroelasticity theory, there are at present no practical guidelines for the interpretation of pumping test data influenced by these effects. To investigate the impact that poroelastic effects during pumping tests have on the estimation of hydraulic parameters, we generate synthetic data for three different aquifer-aquitard settings using a poroelasticity model, and then analyze the synthetic data using type curves and parameter estimation techniques, both of which are based on traditional groundwater theory and do not account for poroelastic effects. Results show that even when poroelastic effects result in significant deformation-induced head changes, it is possible to obtain reasonable estimates of hydraulic parameters using methods based on traditional groundwater theory, as long as pumping is sufficiently long so that deformation-induced effects have largely dissipated. ?? 2011 The Author(s). Journal compilation ?? 2011 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2010.00781.x","issn":"0017467X","usgsCitation":"Berg, S., Hsieh, P.A., and Illman, W., 2011, Estimating Hydraulic Parameters When Poroelastic Effects Are Significant: Ground Water, v. 49, no. 6, p. 815-829, https://doi.org/10.1111/j.1745-6584.2010.00781.x.","startPage":"815","endPage":"829","numberOfPages":"15","costCenters":[],"links":[{"id":216612,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2010.00781.x"},{"id":244493,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-01-04","publicationStatus":"PW","scienceBaseUri":"505a0affe4b0c8380cd524fb","contributors":{"authors":[{"text":"Berg, S.J.","contributorId":61671,"corporation":false,"usgs":true,"family":"Berg","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":445057,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hsieh, P. A.","contributorId":40596,"corporation":false,"usgs":true,"family":"Hsieh","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":445055,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Illman, W.A.","contributorId":53195,"corporation":false,"usgs":true,"family":"Illman","given":"W.A.","email":"","affiliations":[],"preferred":false,"id":445056,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034275,"text":"70034275 - 2011 - Rainfall intensity-duration thresholds for postfire debris-flow emergency-response planning","interactions":[],"lastModifiedDate":"2012-03-12T17:21:47","indexId":"70034275","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2822,"text":"Natural Hazards","active":true,"publicationSubtype":{"id":10}},"title":"Rainfall intensity-duration thresholds for postfire debris-flow emergency-response planning","docAbstract":"Following wildfires, emergency-response and public-safety agencies can be faced with evacuation and resource-deployment decisions well in advance of coming winter storms and during storms themselves. Information critical to these decisions is provided for recently burned areas in the San Gabriel Mountains of southern California. A compilation of information on the hydrologic response to winter storms from recently burned areas in southern California steeplands is used to develop a system for classifying magnitudes of hydrologic response. The four-class system describes combinations of reported volumes of individual debris flows, consequences of debris flows and floods in an urban setting, and spatial extents of the hydrologic response. The range of rainfall conditions associated with different magnitude classes is defined by integrating local rainfall data with the response magnitude information. Magnitude I events can be expected when within-storm rainfall accumulations (A) of given durations (D) fall above the threshold A = 0.4D0.5 and below A = 0.5D0.6 for durations greater than 1 h. Magnitude II events will be generated in response to rainfall accumulations and durations between A = 0.4D0.5 and A = 0.9D0.5 for durations less than 1 h, and between A = 0.5D0.6 and A = 0.9D0.5 or durations greater than 1 h. Magnitude III events can be expected in response to rainfall conditions above the threshold A = 0.9D0.5. Rainfall threshold-magnitude relations are linked with potential emergency-response actions as an emergency-response decision chart, which leads a user through steps to determine potential event magnitudes and identify possible evacuation and resource-deployment levels. Use of this information in planning and response decision-making process could result in increased safety for both the public and emergency responders. ?? 2011 US Government.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Natural Hazards","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11069-011-9747-2","issn":"0921030X","usgsCitation":"Cannon, S., Boldt, E., Laber, J., Kean, J., and Staley, D., 2011, Rainfall intensity-duration thresholds for postfire debris-flow emergency-response planning: Natural Hazards, v. 59, no. 1, p. 209-236, https://doi.org/10.1007/s11069-011-9747-2.","startPage":"209","endPage":"236","numberOfPages":"28","costCenters":[],"links":[{"id":216554,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11069-011-9747-2"},{"id":244432,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"59","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-03-05","publicationStatus":"PW","scienceBaseUri":"505a945fe4b0c8380cd81387","contributors":{"authors":[{"text":"Cannon, S.H.","contributorId":38154,"corporation":false,"usgs":true,"family":"Cannon","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":445035,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boldt, E.M.","contributorId":33552,"corporation":false,"usgs":true,"family":"Boldt","given":"E.M.","email":"","affiliations":[],"preferred":false,"id":445034,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Laber, J.L.","contributorId":83350,"corporation":false,"usgs":true,"family":"Laber","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":445037,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kean, J. W. 0000-0003-3089-0369","orcid":"https://orcid.org/0000-0003-3089-0369","contributorId":71679,"corporation":false,"usgs":true,"family":"Kean","given":"J. W.","affiliations":[],"preferred":false,"id":445036,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Staley, D.M.","contributorId":17851,"corporation":false,"usgs":true,"family":"Staley","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":445033,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034273,"text":"70034273 - 2011 - Native Americans, regional drought and tree Island evolution in the Florida Everglades","interactions":[],"lastModifiedDate":"2013-03-17T11:22:00","indexId":"70034273","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1905,"text":"Holocene","active":true,"publicationSubtype":{"id":10}},"title":"Native Americans, regional drought and tree Island evolution in the Florida Everglades","docAbstract":"This study uses palynologic data to determine the effects of regional climate variability and human activity on the formation and development of tree islands during the last ~4000 years. Although prolonged periods of aridity have been invoked as one mechanism for their formation, Native American land use has also been hypothesized as a driver of tree island development. Using pollen assemblages from head and near tail sediments collected on two tree islands and documented archeological data, the relative roles of Native Americans, climate variability, and recent water-management practices in forming and structuring Everglades tree islands are examined. The timing of changes recorded in the pollen record indicates that tree islands developed from sawgrass marshes ~3800 cal. yr BP, prior to human occupation. Major tree island expansion, recorded near tail sediments, occurred ~1000 years after initial tree island formation. Comparison of the timing of pollen assemblages with other proxy records indicates that tree island expansion is related to regional and global aridity correlated with southward migration of the Intertropical Convergence Zone. Local fire associated with droughts may also have influenced tree island expansion. This work suggests that Native American occupation did not significantly influence tree island formation and that the most important factors governing tree island expansion are extreme hydrologic events due to droughts and intense twentieth century water management.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Holocene","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"SAGE Publications","publisherLocation":"Thousand Oaks, CA","doi":"10.1177/0959683611400204","issn":"09596836","usgsCitation":"Bernhardt, C., 2011, Native Americans, regional drought and tree Island evolution in the Florida Everglades: Holocene, v. 21, no. 6, p. 967-978, https://doi.org/10.1177/0959683611400204.","productDescription":"12 p.","startPage":"967","endPage":"978","numberOfPages":"12","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true}],"links":[{"id":216522,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1177/0959683611400204"},{"id":244399,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Florida Everglades","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 81.0,25.0 ], [ 81.0,27.0 ], [ 80.0,27.0 ], [ 80.0,25.0 ], [ 81.0,25.0 ] ] ] } } ] }","volume":"21","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-04-20","publicationStatus":"PW","scienceBaseUri":"505a62a2e4b0c8380cd72024","contributors":{"authors":[{"text":"Bernhardt, C. 0000-0003-0082-4731","orcid":"https://orcid.org/0000-0003-0082-4731","contributorId":104307,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.","affiliations":[],"preferred":false,"id":445027,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034271,"text":"70034271 - 2011 - Peat Formation Processes Through the Millennia in Tidal Marshes of the Sacramento-San Joaquin Delta, California, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:45","indexId":"70034271","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Peat Formation Processes Through the Millennia in Tidal Marshes of the Sacramento-San Joaquin Delta, California, USA","docAbstract":"The purpose of this study was to determine peat formation processes throughout the millennia in four tidal marshes in the Sacramento-San Joaquin Delta. Peat cores collected at each site were analyzed for bulk density, loss on ignition, and percent organic carbon. Core data and spline fit age-depth models were used to estimate inorganic sedimentation, organic accumulation, and carbon sequestration rates in the marshes. Bulk density and percent organic matter content of peat fluctuated through time at all sites, suggesting that peat formation processes are dynamic and responsive to watershed conditions. The balance between inorganic sedimentation and organic accumulation at the sites also varied through time, indicating that marshes may rely more strongly on either inorganic or organic matter for peat formation at particular times in their existence. Mean carbon sequestration rates found in this study (0. 38-0. 79 Mg C ha-1 year-1) were similar to other long-term estimates for temperate peatlands. ?? 2011 Coastal and Estuarine Research Federation (outside the USA).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Estuaries and Coasts","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s12237-011-9393-7","issn":"15592723","usgsCitation":"Drexler, J., 2011, Peat Formation Processes Through the Millennia in Tidal Marshes of the Sacramento-San Joaquin Delta, California, USA: Estuaries and Coasts, v. 34, no. 5, p. 900-911, https://doi.org/10.1007/s12237-011-9393-7.","startPage":"900","endPage":"911","numberOfPages":"12","costCenters":[],"links":[{"id":244877,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216972,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s12237-011-9393-7"}],"volume":"34","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-03-24","publicationStatus":"PW","scienceBaseUri":"505a761ae4b0c8380cd77f0c","contributors":{"authors":[{"text":"Drexler, J.Z. 0000-0002-0127-3866","orcid":"https://orcid.org/0000-0002-0127-3866","contributorId":54766,"corporation":false,"usgs":true,"family":"Drexler","given":"J.Z.","affiliations":[],"preferred":false,"id":445018,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034270,"text":"70034270 - 2011 - A Web-Based Decision Support System for Assessing Regional Water-Quality Conditions and Management Actions","interactions":[],"lastModifiedDate":"2012-03-12T17:21:45","indexId":"70034270","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"A Web-Based Decision Support System for Assessing Regional Water-Quality Conditions and Management Actions","docAbstract":"The U.S. Geological Survey National Water Quality Assessment Program has completed a number of water-quality prediction models for nitrogen and phosphorus for the conterminous United States as well as for regional areas of the nation. In addition to estimating water-quality conditions at unmonitored streams, the calibrated SPAtially Referenced Regressions On Watershed attributes (SPARROW) models can be used to produce estimates of yield, flow-weighted concentration, or load of constituents in water under various land-use condition, change, or resource management scenarios. A web-based decision support infrastructure has been developed to provide access to SPARROW simulation results on stream water-quality conditions and to offer sophisticated scenario testing capabilities for research and water-quality planning via a graphical user interface with familiar controls. The SPARROW decision support system (DSS) is delivered through a web browser over an Internet connection, making it widely accessible to the public in a format that allows users to easily display water-quality conditions and to describe, test, and share modeled scenarios of future conditions. SPARROW models currently supported by the DSS are based on the modified digital versions of the 1:500,000-scale River Reach File (RF1) and 1:100,000-scale National Hydrography Dataset (medium-resolution, NHDPlus) stream networks. ?? 2011 American Water Resources Association. This article is a U.S. Government work and is in the public domain in the USA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2011.00573.x","issn":"1093474X","usgsCitation":"Booth, N., Everman, E., Kuo, I., Sprague, L., and Murphy, L., 2011, A Web-Based Decision Support System for Assessing Regional Water-Quality Conditions and Management Actions: Journal of the American Water Resources Association, v. 47, no. 5, p. 1136-1150, https://doi.org/10.1111/j.1752-1688.2011.00573.x.","startPage":"1136","endPage":"1150","numberOfPages":"15","costCenters":[],"links":[{"id":475399,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1752-1688.2011.00573.x","text":"Publisher Index Page"},{"id":216946,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2011.00573.x"},{"id":244848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-08-08","publicationStatus":"PW","scienceBaseUri":"5059e315e4b0c8380cd45df4","contributors":{"authors":[{"text":"Booth, N.L.","contributorId":60815,"corporation":false,"usgs":true,"family":"Booth","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":445015,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Everman, E.J.","contributorId":88583,"corporation":false,"usgs":true,"family":"Everman","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":445017,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kuo, I.-L.","contributorId":71421,"corporation":false,"usgs":true,"family":"Kuo","given":"I.-L.","email":"","affiliations":[],"preferred":false,"id":445016,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sprague, L.","contributorId":12295,"corporation":false,"usgs":true,"family":"Sprague","given":"L.","affiliations":[],"preferred":false,"id":445013,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Murphy, L.","contributorId":60049,"corporation":false,"usgs":true,"family":"Murphy","given":"L.","email":"","affiliations":[],"preferred":false,"id":445014,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034257,"text":"70034257 - 2011 - Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents","interactions":[],"lastModifiedDate":"2012-03-12T17:21:46","indexId":"70034257","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents","docAbstract":"Ecologically equivalent species serve similar functions in different communities, and an ecological surrogate species can be used as a substitute for an equivalent species in a community. Siberian polecats (Mustela eversmanii) and black-footed ferrets (M. nigripes) have long been considered ecological equivalents. Polecats also have been used as investigational surrogates for black-footed ferrets, yet the similarities and differences between the 2 species are poorly understood. We contrasted activity patterns of radiotagged polecats and ferrets released onto ferret habitat. Ferrets tended to be nocturnal and most active after midnight. Polecats were not highly selective for any period of the day or night. Ferrets and polecats moved most during brightly moonlit nights. The diel activity pattern of ferrets was consistent with avoidance of coyotes (Canis latrans) and diurnal birds of prey. Similarly, polecat activity was consistent with avoidance of red foxes (Vulpes vulpes) in their natural range. Intraguild predation (including interference competition) is inferred as a selective force influencing behaviors of these mustelines. Examination of our data suggests that black-footed ferrets and Siberian polecats might be ecological equivalents but are not perfect surrogates. Nonetheless, polecats as surrogates for black-footed ferrets have provided critical insight needed, especially related to predation, to improve the success of ferret reintroductions. ?? 2011 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/10-MAMM-S-110.1","issn":"00222372","usgsCitation":"Biggins, E., Hanebury, L.R., Miller, B., and Powell, R.A., 2011, Black-footed ferrets and Siberian polecats as ecological surrogates and ecological equivalents: Journal of Mammalogy, v. 92, no. 4, p. 710-720, https://doi.org/10.1644/10-MAMM-S-110.1.","startPage":"710","endPage":"720","numberOfPages":"11","costCenters":[],"links":[{"id":475394,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1644/10-mamm-s-110.1","text":"Publisher Index Page"},{"id":216763,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/10-MAMM-S-110.1"},{"id":244650,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-08-16","publicationStatus":"PW","scienceBaseUri":"5059f1dde4b0c8380cd4ae81","contributors":{"authors":[{"text":"Biggins, E.","contributorId":88303,"corporation":false,"usgs":true,"family":"Biggins","given":"E.","email":"","affiliations":[],"preferred":false,"id":444949,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hanebury, Louis R.","contributorId":47544,"corporation":false,"usgs":true,"family":"Hanebury","given":"Louis","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":444948,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, B.J.","contributorId":17173,"corporation":false,"usgs":true,"family":"Miller","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":444946,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Powell, R. A.","contributorId":41789,"corporation":false,"usgs":true,"family":"Powell","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":444947,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034255,"text":"70034255 - 2011 - Remote sensing of soil moisture using airborne hyperspectral data","interactions":[],"lastModifiedDate":"2012-03-12T17:21:46","indexId":"70034255","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1722,"text":"GIScience and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Remote sensing of soil moisture using airborne hyperspectral data","docAbstract":"Landscape assessment of soil moisture is critical to understanding the hydrological cycle at the regional scale and in broad-scale studies of biophysical processes affected by global climate changes in temperature and precipitation. Traditional efforts to measure soil moisture have been principally restricted to in situ measurements, so remote sensing techniques are often employed. Hyperspectral sensors with finer spatial resolution and narrow band widths may offer an alternative to traditional multispectral analysis of soil moisture, particularly in landscapes with high spatial heterogeneity. This preliminary research evaluates the ability of remotely sensed hyperspectral data to quantify soil moisture for the Little River Experimental Watershed (LREW), Georgia. An airborne hyperspectral instrument with a short-wavelength infrared (SWIR) sensor was flown in 2005 and 2007 and the results were correlated to in situ soil moisture values. A significant statistical correlation (R2 value above 0.7 for both sampling dates) for the hyperspectral instrument data and the soil moisture probe data at 5.08 cm (2 inches) was determined. While models for the 20.32 cm (8 inches) and 30.48 cm (12 inches) depths were tested, they were not able to estimate soil moisture to the same degree.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"GIScience and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2747/1548-1603.48.4.522","issn":"15481603","usgsCitation":"Finn, M., Lewis, M., Bosch, D., Giraldo, M., Yamamoto, K., Sullivan, D., Kincaid, R., Luna, R., Allam, G., Kvien, C., and Williams, M., 2011, Remote sensing of soil moisture using airborne hyperspectral data: GIScience and Remote Sensing, v. 48, no. 4, p. 522-540, https://doi.org/10.2747/1548-1603.48.4.522.","startPage":"522","endPage":"540","numberOfPages":"19","costCenters":[],"links":[{"id":216731,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2747/1548-1603.48.4.522"},{"id":244617,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"4","noUsgsAuthors":false,"publicationDate":"2013-05-15","publicationStatus":"PW","scienceBaseUri":"505aa706e4b0c8380cd851a4","contributors":{"authors":[{"text":"Finn, M.","contributorId":45539,"corporation":false,"usgs":true,"family":"Finn","given":"M.","email":"","affiliations":[],"preferred":false,"id":444926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewis, M.","contributorId":37395,"corporation":false,"usgs":true,"family":"Lewis","given":"M.","email":"","affiliations":[],"preferred":false,"id":444924,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bosch, D.","contributorId":83241,"corporation":false,"usgs":true,"family":"Bosch","given":"D.","email":"","affiliations":[],"preferred":false,"id":444929,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giraldo, Mario","contributorId":66094,"corporation":false,"usgs":true,"family":"Giraldo","given":"Mario","email":"","affiliations":[],"preferred":false,"id":444928,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yamamoto, K.","contributorId":103119,"corporation":false,"usgs":true,"family":"Yamamoto","given":"K.","email":"","affiliations":[],"preferred":false,"id":444931,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sullivan, D.","contributorId":37569,"corporation":false,"usgs":true,"family":"Sullivan","given":"D.","affiliations":[],"preferred":false,"id":444925,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kincaid, R.","contributorId":30847,"corporation":false,"usgs":true,"family":"Kincaid","given":"R.","email":"","affiliations":[],"preferred":false,"id":444922,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Luna, R.","contributorId":46708,"corporation":false,"usgs":true,"family":"Luna","given":"R.","email":"","affiliations":[],"preferred":false,"id":444927,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Allam, G.","contributorId":27712,"corporation":false,"usgs":true,"family":"Allam","given":"G.","email":"","affiliations":[],"preferred":false,"id":444921,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Kvien, Craig","contributorId":33434,"corporation":false,"usgs":true,"family":"Kvien","given":"Craig","email":"","affiliations":[],"preferred":false,"id":444923,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Williams, Murray","contributorId":100499,"corporation":false,"usgs":true,"family":"Williams","given":"Murray","email":"","affiliations":[],"preferred":false,"id":444930,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70034241,"text":"70034241 - 2011 - Widespread inclination shallowing in Permian and Triassic paleomagnetic data from Laurentia: Support from new paleomagnetic data from Middle Permian shallow intrusions in southern Illinois (USA) and virtual geomagnetic pole distributions","interactions":[],"lastModifiedDate":"2012-03-12T17:21:51","indexId":"70034241","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3525,"text":"Tectonophysics","active":true,"publicationSubtype":{"id":10}},"title":"Widespread inclination shallowing in Permian and Triassic paleomagnetic data from Laurentia: Support from new paleomagnetic data from Middle Permian shallow intrusions in southern Illinois (USA) and virtual geomagnetic pole distributions","docAbstract":"Recent paleomagnetic work has highlighted a common and shallow inclination bias in continental redbeds. The Permian and Triassic paleomagnetic records from Laurentia are almost entirely derived from such sedimentary rocks, so a pervasive inclination error will expectedly bias the apparent polar wander path of Laurentia in a significant way. The long-standing discrepancy between the apparent polar wander paths of Laurentia and Gondwana in Permian and Triassic time may be a consequence of such a widespread data-pathology. Here we present new Middle Permian paleomagnetic data from igneous rocks and a contact metamorphosed limestone from cratonic Laurentia. The exclusively reversed Middle Permian magnetization is hosted by low-Ti titanomagnetite and pyrrhotite and yields a paleomagnetic pole at 56.3??S, 302.9??E (A95=3.8, N=6). This pole, which is unaffected by inclination shallowing, suggests that a shallow inclination bias may indeed be present in the Laurentian records. To further consider this hypothesis, we conduct a virtual geomagnetic pole distribution analysis, comparing theoretical expectations of a statistical field model (TK03.GAD) against published data-sets. This exercise provides independent evidence that the Laurentian paleomagnetic data is widely biased, likely because of sedimentary inclination shallowing. We estimate the magnitude of this error from our model results and present and discuss several alternative corrections. ?? 2011 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Tectonophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.tecto.2011.08.016","issn":"00401951","usgsCitation":"Domeier, M., Van Der Voo, R., and Denny, F., 2011, Widespread inclination shallowing in Permian and Triassic paleomagnetic data from Laurentia: Support from new paleomagnetic data from Middle Permian shallow intrusions in southern Illinois (USA) and virtual geomagnetic pole distributions: Tectonophysics, v. 511, no. 1-2, p. 38-52, https://doi.org/10.1016/j.tecto.2011.08.016.","startPage":"38","endPage":"52","numberOfPages":"15","costCenters":[],"links":[{"id":216520,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.tecto.2011.08.016"},{"id":244397,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"511","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd0b2e4b08c986b32efe3","contributors":{"authors":[{"text":"Domeier, M.","contributorId":78170,"corporation":false,"usgs":true,"family":"Domeier","given":"M.","email":"","affiliations":[],"preferred":false,"id":444855,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Der Voo, R.","contributorId":61959,"corporation":false,"usgs":true,"family":"Van Der Voo","given":"R.","email":"","affiliations":[],"preferred":false,"id":444854,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Denny, F.B.","contributorId":53546,"corporation":false,"usgs":true,"family":"Denny","given":"F.B.","email":"","affiliations":[],"preferred":false,"id":444853,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034238,"text":"70034238 - 2011 - Classifying the hydrologic function of prairie potholes with remote sensing and GIS","interactions":[],"lastModifiedDate":"2017-04-06T13:33:15","indexId":"70034238","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Classifying the hydrologic function of prairie potholes with remote sensing and GIS","docAbstract":"<p><span>A sequence of Landsat TM/ETM+ scenes capturing the substantial surface water variations exhibited by prairie pothole wetlands over a drought to deluge period were analyzed in an attempt to determine the general hydrologic function of individual wetlands (recharge, flow-through, and discharge). Multipixel objects (water bodies) were clustered according to their temporal changes in water extents. We found that wetlands receiving groundwater discharge responded differently over the time period than wetlands that did not. Also, wetlands located within topographically closed discharge basins could be distinguished from discharge basins with overland outlets. Field verification data showed that discharge wetlands with closed basins were most distinct and identifiable with reasonable accuracies (user’s accuracy = 97%, producer’s accuracy = 71%). The classification of other hydrologic function types had lower accuracies reducing the overall accuracy for the four hydrologic function classes to 51%. A simplified classification approach identifying only two hydrologic function classes was 82%. Although this technique has limited success for detecting small wetlands, Landsat-derived multipixel-object clustering can reliably differentiate wetlands receiving groundwater discharge and provides a new approach to quantify wetland dynamics in landscape scale investigations and models.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s13157-011-0146-y","issn":"02775212","usgsCitation":"Rover, J.R., Wright, C., Euliss, N.H., Mushet, D.M., and Wylie, B.K., 2011, Classifying the hydrologic function of prairie potholes with remote sensing and GIS: Wetlands, v. 31, no. 2, p. 319-327, https://doi.org/10.1007/s13157-011-0146-y.","productDescription":"9 p.","startPage":"319","endPage":"327","numberOfPages":"9","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":216944,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s13157-011-0146-y"},{"id":244846,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationDate":"2011-02-22","publicationStatus":"PW","scienceBaseUri":"5059f632e4b0c8380cd4c5f3","contributors":{"authors":[{"text":"Rover, Jennifer R. 0000-0002-3437-4030 jrover@usgs.gov","orcid":"https://orcid.org/0000-0002-3437-4030","contributorId":2941,"corporation":false,"usgs":true,"family":"Rover","given":"Jennifer","email":"jrover@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":false,"id":444842,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, C.K.","contributorId":25780,"corporation":false,"usgs":true,"family":"Wright","given":"C.K.","affiliations":[],"preferred":false,"id":444841,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Euliss, Ned H. Jr. ceuliss@usgs.gov","contributorId":2916,"corporation":false,"usgs":true,"family":"Euliss","given":"Ned","suffix":"Jr.","email":"ceuliss@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":false,"id":444843,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mushet, David M. 0000-0002-5910-2744 dmushet@usgs.gov","orcid":"https://orcid.org/0000-0002-5910-2744","contributorId":1299,"corporation":false,"usgs":true,"family":"Mushet","given":"David","email":"dmushet@usgs.gov","middleInitial":"M.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":444844,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wylie, Bruce K. 0000-0002-7374-1083 wylie@usgs.gov","orcid":"https://orcid.org/0000-0002-7374-1083","contributorId":750,"corporation":false,"usgs":true,"family":"Wylie","given":"Bruce","email":"wylie@usgs.gov","middleInitial":"K.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":444840,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034235,"text":"70034235 - 2011 - Habitat use of nesting and brood-rearing King Rails in the Illinois and Upper Mississippi River Valleys","interactions":[],"lastModifiedDate":"2015-07-22T10:07:43","indexId":"70034235","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Habitat use of nesting and brood-rearing King Rails in the Illinois and Upper Mississippi River Valleys","docAbstract":"<p><span>Most studies of King Rail (</span><i>Rallus elegans</i><span>) have investigated habitat use during the nesting season, while few comparisons have been made between the nesting and brood-rearing seasons. King Rails were located during the nesting season in Missouri using repeated surveys with call playback, and systematic searches for broods were conducted during the brood-rearing season. King Rail adults were located at twelve points in 2006 and 14 points in 2007, and five King Rail broods were located in each year. Water depth was measured and dominant cover type determined for randomly sampled 5-m plots within used and unused habitats. Logistic regression models were fitted to the data and top models were selected from the candidate set using AIC</span><sub>c</sub><span>. Nesting adults occurred more often in areas dominated by short (&le;1 m) emergent vegetation (</span><span class=\"NLM_inline-graphic\"><img src=\"http://www.bioone.org/na101/home/literatum/publisher/bioone/journals/content/cowa/2011/063.034.0200/063.034.0204/production/images/medium/fi01_160.gif\" alt=\"\" /></span><span>&nbsp;= 0.77 &plusmn; 0.27) and deeper water (</span><span class=\"NLM_inline-graphic\"><img src=\"http://www.bioone.org/na101/home/literatum/publisher/bioone/journals/content/cowa/2011/063.034.0200/063.034.0204/production/images/medium/fi01_160.gif\" alt=\"\" /></span><span>&nbsp;= 0.05 &plusmn; 0.02). Broods occurred more often in areas dominated by short emergent vegetation (</span><span class=\"NLM_inline-graphic\"><img src=\"http://www.bioone.org/na101/home/literatum/publisher/bioone/journals/content/cowa/2011/063.034.0200/063.034.0204/production/images/medium/fi01_160.gif\" alt=\"\" /></span><span>&nbsp;= 1.19 &plusmn; 0.37) and shallow water (</span><span class=\"NLM_inline-graphic\"><img src=\"http://www.bioone.org/na101/home/literatum/publisher/bioone/journals/content/cowa/2011/063.034.0200/063.034.0204/production/images/medium/fi01_160.gif\" alt=\"\" /></span><span>&nbsp;= -0.17 &plusmn; 0.06), and avoided areas dominated by tall (&gt;1 m) emergent vegetation (</span><span class=\"NLM_inline-graphic\"><img src=\"http://www.bioone.org/na101/home/literatum/publisher/bioone/journals/content/cowa/2011/063.034.0200/063.034.0204/production/images/medium/fi01_160.gif\" alt=\"\" /></span><span>&nbsp;=-1.15 &plusmn; 0.45). A modified catch-curve analysis was used to estimate chick daily survival rates during selected 7-day periods for each year. Daily survival rate ranged from 0.92 &plusmn; 0.008 in late June 2007 to 0.96 &plusmn; 0.005 in late July 2006. Management plans for King Rails should include the different habitat types needed during the nesting and brood-rearing stages.</span></p>","largerWorkTitle":"Waterbirds","language":"English","doi":"10.1675/063.034.0204","issn":"15244695","usgsCitation":"Darrah, A., and Krementz, D., 2011, Habitat use of nesting and brood-rearing King Rails in the Illinois and Upper Mississippi River Valleys: Waterbirds, v. 34, no. 2, p. 160-167, https://doi.org/10.1675/063.034.0204.","startPage":"160","endPage":"167","numberOfPages":"8","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":244778,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216880,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/063.034.0204"}],"volume":"34","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f47e4b0c8380cd5cc46","contributors":{"authors":[{"text":"Darrah, A.J.","contributorId":57691,"corporation":false,"usgs":true,"family":"Darrah","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":444800,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krementz, D.G.","contributorId":74332,"corporation":false,"usgs":true,"family":"Krementz","given":"D.G.","affiliations":[],"preferred":false,"id":444801,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034232,"text":"70034232 - 2011 - Lava tube shatter rings and their correlation with lava flux increases at Kīlauea Volcano, Hawai‘i","interactions":[],"lastModifiedDate":"2012-12-18T09:39:02","indexId":"70034232","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"Lava tube shatter rings and their correlation with lava flux increases at Kīlauea Volcano, Hawai‘i","docAbstract":"Shatter rings are circular to elliptical volcanic features, typically tens of meters in diameter, which form over active lava tubes. They are typified by an upraised rim of blocky rubble and a central depression. Prior to this study, shatter rings had not been observed forming, and, thus, were interpreted in many ways. This paper describes the process of formation for shatter rings observed at Kīlauea Volcano during November 2005–July 2006. During this period, tilt data, time-lapse images, and field observations showed that episodic tilt changes at the nearby Pu‘u ‘Ō‘ō cone, the shallow magmatic source reservoir, were directly related to fluctuations in the level of lava in the active lava tube, with periods of deflation at Pu‘u ‘Ō‘ō correlating with increases in the level of the lava stream surface. Increases in lava level are interpreted as increases in lava flux, and were coincident with lava breakouts from shatter rings constructed over the lava tube. The repetitive behavior of the lava flux changes, inferred from the nearly continuous tilt oscillations, suggests that shatter rings form from the repeated rise and fall of a portion of a lava tube roof. The locations of shatter rings along the active lava tube suggest that they form where there is an abrupt decrease in flow velocity through the tube, e.g., large increase in tube width, abrupt decrease in tube slope, and (or) sudden change in tube direction. To conserve volume, this necessitates an abrupt increase in lava stream depth and causes over-pressurization of the tube. More than a hundred shatter rings have been identified on volcanoes on Hawai‘i and Maui, and dozens have been reported from basaltic lava fields in Iceland, Australia, Italy, Samoa, and the mainland United States. A quick study of other basaltic lava fields worldwide, using freely available satellite imagery, suggests that they might be even more common than previously thought. If so, this confirms that episodic fluctuation in lava effusion rate is a relatively common process at basaltic volcanoes, and that the presence of shatter rings in prehistoric lava flow fields can be used as evidence that such fluctuations have occurred.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of Volcanology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","publisherLocation":"Amsterdam, Netherlands","doi":"10.1007/s00445-010-0414-3","issn":"02588900","usgsCitation":"Orr, T., 2011, Lava tube shatter rings and their correlation with lava flux increases at Kīlauea Volcano, Hawai‘i: Bulletin of Volcanology, v. 73, no. 3, p. 335-346, https://doi.org/10.1007/s00445-010-0414-3.","productDescription":"12 p.","startPage":"335","endPage":"346","costCenters":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true}],"links":[{"id":216848,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00445-010-0414-3"},{"id":244744,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawai'i","otherGeospatial":"Kilauea Volcano","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -155.798371,19.056854 ], [ -155.798371,19.550464 ], [ -155.016307,19.550464 ], [ -155.016307,19.056854 ], [ -155.798371,19.056854 ] ] ] } } ] }","volume":"73","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-10-02","publicationStatus":"PW","scienceBaseUri":"505a458fe4b0c8380cd6740a","contributors":{"authors":[{"text":"Orr, T.R.","contributorId":29244,"corporation":false,"usgs":true,"family":"Orr","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":444794,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034221,"text":"70034221 - 2011 - Analysis of passive surface-wave noise in surface microseismic data and its implications","interactions":[],"lastModifiedDate":"2012-03-12T17:21:46","indexId":"70034221","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3317,"text":"SEG Technical Program Expanded Abstracts","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of passive surface-wave noise in surface microseismic data and its implications","docAbstract":"Tight gas reservoirs are projected to be a major portion of future energy resources. Because of their low permeability, hydraulic fracturing of these reservoirs is required to improve the permeability and reservoir productivity. Passive seismic monitoring is one of the few tools that can be used to characterize the changes in the reservoir due to hydraulic fracturing. Although the majority of the studies monitoring hydraulic fracturing exploit down hole microseismic data, surface microseismic monitoring is receiving increased attention because it is potentially much less expensive to acquire. Due to a broader receiver aperture and spatial coverage, surface microseismic data may be more advantageous than down hole microseismic data. The effectiveness of this monitoring technique, however, is strongly dependent on the signal-to-noise ratio of the data. Cultural and ambient noise can mask parts of the waveform that carry information about the subsurface, thereby decreasing the effectiveness of surface microseismic analysis in identifying and locating the microseismic events. Hence, time and spatially varying suppression of the surface-wave noise ground roll is a critical step in surface microseismic monitoring. Here, we study a surface passive dataset that was acquired over a Barnett Shale Formation reservoir during two weeks of hydraulic fracturing, in order to characterize and suppress the surface noise in this data. We apply techniques to identify the characteristics of the passive ground roll. Exploiting those characteristics, we can apply effective noise suppression techniques to the passive data. ?? 2011 Society of Exploration Geophysicists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"SEG Technical Program Expanded Abstracts","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1190/1.3627485","issn":"10523812","usgsCitation":"Forghani-Arani, F., Willis, M., Haines, S., Batzle, M., and Davidson, M., 2011, Analysis of passive surface-wave noise in surface microseismic data and its implications: SEG Technical Program Expanded Abstracts, v. 30, no. 1, p. 1493-1498, https://doi.org/10.1190/1.3627485.","startPage":"1493","endPage":"1498","numberOfPages":"6","costCenters":[],"links":[{"id":216695,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/1.3627485"},{"id":244581,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-05-25","publicationStatus":"PW","scienceBaseUri":"5059eb25e4b0c8380cd48c55","contributors":{"authors":[{"text":"Forghani-Arani, F.","contributorId":76969,"corporation":false,"usgs":true,"family":"Forghani-Arani","given":"F.","affiliations":[],"preferred":false,"id":444689,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willis, M.","contributorId":82910,"corporation":false,"usgs":true,"family":"Willis","given":"M.","email":"","affiliations":[],"preferred":false,"id":444690,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haines, S. 0000-0003-2611-8165","orcid":"https://orcid.org/0000-0003-2611-8165","contributorId":13052,"corporation":false,"usgs":true,"family":"Haines","given":"S.","affiliations":[],"preferred":false,"id":444687,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Batzle, M.","contributorId":107527,"corporation":false,"usgs":true,"family":"Batzle","given":"M.","email":"","affiliations":[],"preferred":false,"id":444691,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Davidson, M.","contributorId":58868,"corporation":false,"usgs":true,"family":"Davidson","given":"M.","email":"","affiliations":[],"preferred":false,"id":444688,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034203,"text":"70034203 - 2011 - A comparison of recharge rates in aquifers of the United States based on groundwater-age data","interactions":[],"lastModifiedDate":"2020-01-28T08:40:59","indexId":"70034203","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of recharge rates in aquifers of the United States based on groundwater-age data","docAbstract":"An overview is presented of existing groundwater-age data and their implications for assessing rates and timescales of recharge in selected unconfined aquifer systems of the United States. Apparent age distributions in aquifers determined from chlorofluorocarbon, sulfur hexafluoride, tritium/helium-3, and radiocarbon measurements from 565 wells in 45 networks were used to calculate groundwater recharge rates. Timescales of recharge were defined by 1,873 distributed tritium measurements and 102 radiocarbon measurements from 27 well networks. Recharge rates ranged from < 10 to 1,200 mm/yr in selected aquifers on the basis of measured vertical age distributions and assuming exponential age gradients. On a regional basis, recharge rates based on tracers of young groundwater exhibited a significant inverse correlation with mean annual air temperature and a significant positive correlation with mean annual precipitation. Comparison of recharge derived from groundwater ages with recharge derived from stream base-flow evaluation showed similar overall patterns but substantial local differences. Results from this compilation demonstrate that age-based recharge estimates can provide useful insights into spatial and temporal variability in recharge at a national scale and factors controlling that variability. Local age-based recharge estimates provide empirical data and process information that are needed for testing and improving more spatially complete model-based methods.","language":"English","publisher":"Springer","doi":"10.1007/s10040-011-0722-5","issn":"14312174","usgsCitation":"McMahon, P., Plummer, N., Böhlke, J., Shapiro, S., and Hinkle, S., 2011, A comparison of recharge rates in aquifers of the United States based on groundwater-age data: Hydrogeology Journal, v. 19, no. 4, p. 779-800, https://doi.org/10.1007/s10040-011-0722-5.","productDescription":"22 p.","startPage":"779","endPage":"800","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":633,"text":"Water Resources National Research Program","active":false,"usgs":true}],"links":[{"id":244842,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.8,24.5 ], [ -124.8,49.383333 ], [ -66.95,49.383333 ], [ -66.95,24.5 ], [ -124.8,24.5 ] ] ] } } ] }","volume":"19","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-04-08","publicationStatus":"PW","scienceBaseUri":"5059e371e4b0c8380cd46010","contributors":{"authors":[{"text":"McMahon, P.B. 0000-0001-7452-2379","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":10762,"corporation":false,"usgs":true,"family":"McMahon","given":"P.B.","affiliations":[],"preferred":false,"id":444579,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":444582,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Böhlke, J.K. 0000-0001-5693-6455","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":96696,"corporation":false,"usgs":true,"family":"Böhlke","given":"J.K.","affiliations":[],"preferred":false,"id":444583,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shapiro, S.D.","contributorId":68492,"corporation":false,"usgs":true,"family":"Shapiro","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":444580,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hinkle, S.R.","contributorId":74778,"corporation":false,"usgs":true,"family":"Hinkle","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":444581,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034201,"text":"70034201 - 2011 - Geochemical and isotopic study of soils and waters from an Italian contaminated site: Agro Aversano (Campania)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:44","indexId":"70034201","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical and isotopic study of soils and waters from an Italian contaminated site: Agro Aversano (Campania)","docAbstract":"Lead isotope applications have been widely used in recent years in environmental studies conducted on different kinds of sampled media. In the present paper, Pb isotope ratios have been used to determine the sources of metal pollution in soils and waters in the Agro Aversano area. During three different sampling phases, a total of 113 surface soils (5-20. cm), 20 samples from 2 soil profiles (0-1. m), 11 stream waters and 4 groundwaters were collected. Major element concentrations in sampled media have been analyzed by the ICP-MS technique. Surface soils (20 samples), all soil profiles and all waters have been also analyzed for Pb isotope compositions by thermal ionization (TIMS). The geochemical data were assessed using statistic methods and cartographically elaborated in order to have a clear picture of the level of disturbance of the area. Pb isotopic data were studied to discriminate between anthropogenic and geologic sources. Our results show that As (5.6-25.6. mg/kg), Cu (9-677. mg/kg), Pb (22-193. mg/kg), Tl (0.53-3.62. mg/kg), V (26-142. mg/kg) and Zn (34-215. mg//kg) contents in analyzed soils, exceed the intervention limits fixed by the Italian Environmental Law for residential areas in some of the sampled sites, while intervention limit for industrial areas is exceeded only for Cu concentrations. Lead isotopic data, show that there is a high similarity between the ratios measured in the leached soil samples and those deriving from anthropic activities. This similarity with anthropogenic Pb is also evident in the ratios measured in both groundwater and stream water samples. ?? 2010 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geochemical Exploration","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.gexplo.2010.09.013","issn":"03756742","usgsCitation":"Bove, M., Ayuso, R., de Vivo, B., Lima, A., and Albanese, S., 2011, Geochemical and isotopic study of soils and waters from an Italian contaminated site: Agro Aversano (Campania): Journal of Geochemical Exploration, v. 109, no. 1-3, p. 38-50, https://doi.org/10.1016/j.gexplo.2010.09.013.","startPage":"38","endPage":"50","numberOfPages":"13","costCenters":[],"links":[{"id":244809,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216908,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gexplo.2010.09.013"}],"volume":"109","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a15d8e4b0c8380cd54f74","contributors":{"authors":[{"text":"Bove, M.A.","contributorId":49211,"corporation":false,"usgs":true,"family":"Bove","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":444574,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ayuso, R. A. 0000-0002-8496-9534","orcid":"https://orcid.org/0000-0002-8496-9534","contributorId":27079,"corporation":false,"usgs":true,"family":"Ayuso","given":"R. A.","affiliations":[],"preferred":false,"id":444572,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"de Vivo, B.","contributorId":50549,"corporation":false,"usgs":false,"family":"de Vivo","given":"B.","affiliations":[],"preferred":false,"id":444575,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lima, A.","contributorId":74884,"corporation":false,"usgs":true,"family":"Lima","given":"A.","affiliations":[],"preferred":false,"id":444576,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Albanese, S.","contributorId":35972,"corporation":false,"usgs":true,"family":"Albanese","given":"S.","affiliations":[],"preferred":false,"id":444573,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034170,"text":"70034170 - 2011 - High-frequency filtering of strong-motion records","interactions":[],"lastModifiedDate":"2013-03-05T11:35:55","indexId":"70034170","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1101,"text":"Bulletin of Earthquake Engineering","active":true,"publicationSubtype":{"id":10}},"title":"High-frequency filtering of strong-motion records","docAbstract":"The influence of noise in strong-motion records is most problematic at low and high frequencies where the signal to noise ratio is commonly low compared to that in the mid-spectrum. The impact of low-frequency noise (<1 Hz) on strong-motion intensity parameters such as ground velocities, displacements and response spectral ordinates can be dramatic and consequentially it has become standard practice to low-cut (high-pass) filter strong-motion data with corner frequencies often chosen based on the shape of Fourier amplitude spectra and the signal-to-noise ratio. It has been shown that response spectral ordinates should not be used beyond some fraction of the corner period (reciprocal of the corner frequency) of the low-cut filter. This article examines the effect of high-frequency noise (>5 Hz) on computed pseudo-absolute response spectral accelerations (PSAs). In contrast to the case of low-frequency noise our analysis shows that filtering to remove high-frequency noise is only necessary in certain situations and that PSAs can often be used up to 100 Hz even if much lower high-cut corner frequencies are required to remove the noise. This apparent contradiction can be explained by the fact that PSAs are often controlled by ground accelerations associated with much lower frequencies than the natural frequency of the oscillator because path and site attenuation (often modelled by Q and κ, respectively) have removed the highest frequencies. We demonstrate that if high-cut filters are to be used, then their corner frequencies should be selected on an individual basis, as has been done in a few recent studies.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of Earthquake Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","publisherLocation":"Amsterdam, Netherlands","doi":"10.1007/s10518-010-9208-4","issn":"1570761X","usgsCitation":"Douglas, J., and Boore, D., 2011, High-frequency filtering of strong-motion records: Bulletin of Earthquake Engineering, v. 9, no. 2, p. 395-409, https://doi.org/10.1007/s10518-010-9208-4.","productDescription":"15 p.","startPage":"395","endPage":"409","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":487174,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://brgm.hal.science/hal-00567837","text":"External Repository"},{"id":216968,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10518-010-9208-4"},{"id":244871,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-09-16","publicationStatus":"PW","scienceBaseUri":"505a30e9e4b0c8380cd5da66","contributors":{"authors":[{"text":"Douglas, J.","contributorId":27811,"corporation":false,"usgs":true,"family":"Douglas","given":"J.","email":"","affiliations":[],"preferred":false,"id":444409,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boore, D.M. 0000-0002-8605-9673","orcid":"https://orcid.org/0000-0002-8605-9673","contributorId":64226,"corporation":false,"usgs":true,"family":"Boore","given":"D.M.","affiliations":[],"preferred":false,"id":444410,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034168,"text":"70034168 - 2011 - Users as essential contributors to spatial cyberinfrastructures","interactions":[],"lastModifiedDate":"2012-03-12T17:21:44","indexId":"70034168","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Users as essential contributors to spatial cyberinfrastructures","docAbstract":"Current accounts of spatial cyberinfrastructure development tend to overemphasize technologies to the neglect of critical social and cultural issues on which adoption depends. Spatial cyberinfrastructures will have a higher chance of success if users of many types, including nonprofessionals, are made central to the development process. Recent studies in the history of infrastructures reveal key turning points and issues that should be considered in the development of spatial cyberinfrastructure projects. These studies highlight the importance of adopting qualitative research methods to learn how users work with data and digital tools, and how user communities form. The author's empirical research on data sharing networks in the Pacific Northwest salmon crisis at the turn of the 21st century demonstrates that ordinary citizens can contribute critical local knowledge to global databases and should be considered in the design and construction of spatial cyberinfrastructures.","largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","language":"English","doi":"10.1073/pnas.0907677108","issn":"00278424","usgsCitation":"Poore, B., 2011, Users as essential contributors to spatial cyberinfrastructures, <i>in</i> Proceedings of the National Academy of Sciences of the United States of America, v. 108, no. 14, p. 5510-5515, https://doi.org/10.1073/pnas.0907677108.","startPage":"5510","endPage":"5515","numberOfPages":"6","costCenters":[],"links":[{"id":475353,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1073/pnas.0907677108","text":"External Repository"},{"id":216938,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0907677108"},{"id":244840,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"14","noUsgsAuthors":false,"publicationDate":"2011-03-28","publicationStatus":"PW","scienceBaseUri":"505bbffae4b08c986b329e73","contributors":{"authors":[{"text":"Poore, B.S.","contributorId":102249,"corporation":false,"usgs":true,"family":"Poore","given":"B.S.","email":"","affiliations":[],"preferred":false,"id":444402,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
]}