{"pageNumber":"877","pageRowStart":"21900","pageSize":"25","recordCount":40783,"records":[{"id":70037344,"text":"70037344 - 2009 - Surface complexation of carboxylate adheres Cryptosporidium parvum öocysts to the hematite-water interface","interactions":[],"lastModifiedDate":"2021-03-18T16:21:44.675286","indexId":"70037344","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Surface complexation of carboxylate adheres Cryptosporidium parvum öocysts to the hematite-water interface","title":"Surface complexation of carboxylate adheres Cryptosporidium parvum öocysts to the hematite-water interface","docAbstract":"The interaction of viable Cryptosporidium parvum öocysts at the hematite (α-Fe2O3)−water interface was examined over a wide range in solution chemistry using in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. Spectra for hematite-sorbed öocysts showed distinct changes in carboxylate group vibrations relative to spectra obtained in the absence of hematite, indicative of direct chemical bonding between carboxylate groups and Fe metal centers of the hematite surface. The data also indicate that complexation modes vary with solution chemistry. In NaCl solution, öocysts are bound to hematite via monodentate and binuclear bidentate complexes. The former predominates at low pH, whereas the latter becomes increasingly prevalent with increasing pH. In a CaCl2 solution, only binuclear bidentate complexes are observed. When solution pH is above the point of zero net proton charge (PZNPC) of hematite, öocyst surface carboxylate groups are bound to the mineral surface via outer-sphere complexes in both electrolyte solutions.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es901346z","usgsCitation":"Gao, X., Metge, D.W., Ray, C., Harvey, R.W., and Chorover, J., 2009, Surface complexation of carboxylate adheres Cryptosporidium parvum öocysts to the hematite-water interface: Environmental Science & Technology, v. 43, no. 19, p. 7423-7429, https://doi.org/10.1021/es901346z.","productDescription":"7 p.","startPage":"7423","endPage":"7429","numberOfPages":"7","ipdsId":"IP-014674","costCenters":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":245159,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"19","noUsgsAuthors":false,"publicationDate":"2009-09-01","publicationStatus":"PW","scienceBaseUri":"505b9f9de4b08c986b31e6f7","contributors":{"authors":[{"text":"Gao, X.","contributorId":71005,"corporation":false,"usgs":false,"family":"Gao","given":"X.","email":"","affiliations":[],"preferred":false,"id":460552,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Metge, David W. dwmetge@usgs.gov","contributorId":663,"corporation":false,"usgs":true,"family":"Metge","given":"David","email":"dwmetge@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":460551,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ray, C.","contributorId":40758,"corporation":false,"usgs":true,"family":"Ray","given":"C.","email":"","affiliations":[],"preferred":false,"id":460550,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":460548,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chorover, J.","contributorId":30051,"corporation":false,"usgs":false,"family":"Chorover","given":"J.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":460549,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70037362,"text":"70037362 - 2009 - Carbon isotope chemostratigraphy and precise dating of middle Frasnian (lower Upper Devonian) Alamo Breccia, Nevada, USA","interactions":[],"lastModifiedDate":"2020-05-22T14:54:41.531875","indexId":"70037362","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Carbon isotope chemostratigraphy and precise dating of middle Frasnian (lower Upper Devonian) Alamo Breccia, Nevada, USA","docAbstract":"At Hancock Summit West, Nevada, western USA, uppermost Givetian (upper Middle Devonian) and lower and middle Frasnian (lower Upper Devonian) rocks of the lower Guilmette Formation include, in stratigraphic sequence, carbonate-platform facies of the conodont falsiovalis, transitans, and punctata Zones; the type Alamo Breccia Member of the middle punctata Zone; and slope facies of the punctata and hassi Zones. The catastrophically deposited Alamo Breccia and related phenomena record the ~ 382 Ma Alamo event, produced by a km-scale bolide impact into a marine setting seaward of an extensive carbonate platform fringing western North America. Re-evaluation of conodonts from the lower Guilmette Formation and Alamo Breccia Member, together with regional sedimentologic and conodont biofacies comparisons, now firmly locates the onset of the Johnson et al. (1985) transgressive–regressive (T–R) cycle IIc, which occurred after the start of the punctata Zone, within a parautochthonous megablock low in the Alamo Breccia.
Whole-rock carbon isotope analyses through the lower Guilmette Formation and Alamo Breccia Member reveal two positive δ13Ccarb excursions: (1) a small, 3‰ excursion, which is possibly correlative with the falsiovalis Event previously identified from sections in Western Europe and Australia, occurs below the breccia in the Upper falsiovalis Zone to early part of the transitans Zone; and (2) a large, multi-part excursion, dominated by a 6‰ positive shift, begins above the start of the punctata Zone and onset of T–R cycle IIc and continues above the Alamo Breccia, ending near the punctata– hassi zonal boundary. This large excursion correlates with the punctata Event, a major positive δ13C excursion previously recognized in eastern Laurussia and northern Gondwana. Consistent with previous studies, at Hancock Summit West the punctata Event is apparently not associated with any regional extinctions or ecosystem reorganizations.
In the study area, onset of the main punctata Event began after the start of both the punctata Zone and T–R cycle IIc, and preceded the Alamo impact by less than 650 k.y., as inferred from conodont biochronologic and regional rock-accumulation rate estimates. Although complicated by the heterolithic, high-energy deposits of the Alamo Breccia, the carbon isotope record of the breccia and post-breccia beds does not indicate a major impact-correlative perturbation to the carbon cycle.
This study extends recognition of the punctata Event to western Laurussia, further reinforcing the potential global scale of the event and its potential importance to understanding early to middle Frasnian marine geochemistry and palaeoenvironments. Based on previous models and our observations, increased tectonic activity, increased nutrient flux to oceans, increased marine bioproductivity, widespread anoxia, and increased organic carbon burial were all likely key factors in driving the punctata Event excursion. Furthermore, periodic eustatic and regional relative sea-level rises may have played an important role in promoting organic carbon burial and in maintaining a link between the primary open-marine geochemical signal and that recorded on the shallow-marine, lower Guilmette carbonate platform.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.palaeo.2009.08.016","issn":"00310182","usgsCitation":"Morrow, J.R., Sandberg, C., Malkowski, K., and Joachimski, M., 2009, Carbon isotope chemostratigraphy and precise dating of middle Frasnian (lower Upper Devonian) Alamo Breccia, Nevada, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 282, no. 1-4, p. 105-118, https://doi.org/10.1016/j.palaeo.2009.08.016.","productDescription":"14 p.","startPage":"105","endPage":"118","numberOfPages":"14","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":244943,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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,{"id":70037364,"text":"70037364 - 2009 - A method for assigning species into groups based on generalized Mahalanobis distance between habitat model coefficients","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037364","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1573,"text":"Environmental and Ecological Statistics","active":true,"publicationSubtype":{"id":10}},"title":"A method for assigning species into groups based on generalized Mahalanobis distance between habitat model coefficients","docAbstract":"Habitat association models are commonly developed for individual animal species using generalized linear modeling methods such as logistic regression. We considered the issue of grouping species based on their habitat use so that management decisions can be based on sets of species rather than individual species. This research was motivated by a study of western landbirds in northern Idaho forests. The method we examined was to separately fit models to each species and to use a generalized Mahalanobis distance between coefficient vectors to create a distance matrix among species. Clustering methods were used to group species from the distance matrix, and multidimensional scaling methods were used to visualize the relations among species groups. Methods were also discussed for evaluating the sensitivity of the conclusions because of outliers or influential data points. We illustrate these methods with data from the landbird study conducted in northern Idaho. Simulation results are presented to compare the success of this method to alternative methods using Euclidean distance between coefficient vectors and to methods that do not use habitat association models. These simulations demonstrate that our Mahalanobis-distance- based method was nearly always better than Euclidean-distance-based methods or methods not based on habitat association models. The methods used to develop candidate species groups are easily explained to other scientists and resource managers since they mainly rely on classical multivariate statistical methods. ?? 2008 Springer Science+Business Media, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental and Ecological Statistics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10651-008-0093-9","issn":"13528505","usgsCitation":"Williams, C., and Heglund, P., 2009, A method for assigning species into groups based on generalized Mahalanobis distance between habitat model coefficients: Environmental and Ecological Statistics, v. 16, no. 4, p. 495-513, https://doi.org/10.1007/s10651-008-0093-9.","startPage":"495","endPage":"513","numberOfPages":"19","costCenters":[],"links":[{"id":217062,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10651-008-0093-9"},{"id":244974,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"4","noUsgsAuthors":false,"publicationDate":"2008-02-28","publicationStatus":"PW","scienceBaseUri":"5059e44fe4b0c8380cd4658b","contributors":{"authors":[{"text":"Williams, C.J.","contributorId":80071,"corporation":false,"usgs":true,"family":"Williams","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":460665,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heglund, P.J.","contributorId":44505,"corporation":false,"usgs":true,"family":"Heglund","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":460664,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70037366,"text":"70037366 - 2009 - Organic geochemistry of resins from modern Agathis australis and Eocene resins from New Zealand: Diagenetic and taxonomic implications","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037366","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Organic geochemistry of resins from modern Agathis australis and Eocene resins from New Zealand: Diagenetic and taxonomic implications","docAbstract":"A maturation series of resins and fossil resins from New Zealand, ranging in age from Modern to Eocene and ranging from uncoalified to high volatile C bituminous coal, were analyzed by elemental, pyrolysis-gas chromatography (Py-GC), Fourier Transform infrared (FTir), and solid-state 13C nuclear magnetic resonance (13C NMR) techniques. For comparison, four resin samples from the Latrobe Valley, Australia, were analyzed. All of the resins and fossil resins of this study show very high H/C atomic ratios, and are characterized by dominant peaks in the 10-60??ppm range of solid-state 13C NMR spectra and prominent bands in the aliphatic stretching region (2800-3000??cm- 1) of FTir spectra, all indicating a highly aliphatic molecular structure. The 13C NMR and FTir data indicate a diterpenoid structure for these resins. There is an abrupt loss of oxygen that occurs at the Lignite A/Subbituminous C stage, which is attributed to a dramatic loss of carboxyl (COOH) from the diterpenoid molecule. This is a new finding in the diagenesis of resins. This important loss in oxygenated functional groups is attributed to a maturation change. Also, there is a progressive loss of exomethylene (CH2) groups with increasing degree of maturation, as shown by both 13C NMR and FTir data. This change has been noted by previous investigators. Exomethylene is absent in the fossil resins from the Eocene high volatile C bituminous coals. This progressive loss is characteristic of Class I resinites. FTir data indicate that the oxygenated functional groups are strong in all the resin samples except the fossil resin from high volatile C bituminous coal. This important change in oxygenated functional groups is attributed to maturation changes. The 13C NMR and FTir data indicate there are minor changes in the Agathis australis resin from the living tree and soil, which suggests that alteration of A. australis resins begins shortly after deposition in the soil for as little as 1000??years. The Morwell and Yallourn fossil resins from brown coal (lignite B) Australia do not have some of the FTir characteristics of the New Zealand resins, which most likely indicates they have a different plant source because different degrees of oxidation and weathering and changes due to fires (i.e., charring) can be ruled out. Our results have implications for studies of the maturation, provenance, and botanical sources of fossil resins and resinites in Eocene and Miocene coals and sediments of New Zealand and Australia. ?? 2009 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2009.07.015","issn":"01665162","usgsCitation":"Lyons, P., Mastalerz, M., and Orem, W., 2009, Organic geochemistry of resins from modern Agathis australis and Eocene resins from New Zealand: Diagenetic and taxonomic implications: International Journal of Coal Geology, v. 80, no. 1, p. 51-62, https://doi.org/10.1016/j.coal.2009.07.015.","startPage":"51","endPage":"62","numberOfPages":"12","costCenters":[],"links":[{"id":217122,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2009.07.015"},{"id":245039,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"80","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6fbfe4b0c8380cd75c3c","contributors":{"authors":[{"text":"Lyons, P.C.","contributorId":87285,"corporation":false,"usgs":true,"family":"Lyons","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":460673,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mastalerz, Maria","contributorId":78065,"corporation":false,"usgs":true,"family":"Mastalerz","given":"Maria","affiliations":[],"preferred":false,"id":460672,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Orem, W. H. 0000-0003-4990-0539","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":93084,"corporation":false,"usgs":true,"family":"Orem","given":"W. H.","affiliations":[],"preferred":false,"id":460674,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70037367,"text":"70037367 - 2009 - Arsenic in the evolution of earth and extraterrestrial ecosystems","interactions":[],"lastModifiedDate":"2018-10-12T10:29:39","indexId":"70037367","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1800,"text":"Geomicrobiology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Arsenic in the evolution of earth and extraterrestrial ecosystems","docAbstract":"If you were asked to speculate about the form extra-terrestrial life on Mars might take, which geomicrobial phenomenon might you select as a model system, assuming that life on Mars would be ‘primitive’? Give your reasons.
At the end of my senior year at Rensselaer Polytechnic Institute in 1968, I took Professor Ehrlich's final for his Geomicrobiology course. The above question beckoned to me like the Sirens to Odysseus, for if I answered, it would take so much time and thought that I would never get around to the exam's other essay questions and consequently, would be “shipwrecked” by flunking the course. So, I passed it up. With this 41-year perspective in mind, this manuscript is now submitted to Professor Ehrlich for (belated) “extra-credit.” R.S. Oremland
","language":"English","publisher":"Taylor and Francis","doi":"10.1080/01490450903102525","issn":"01490451","usgsCitation":"Oremland, R., Saltikov, C., Wolfe-Simon, F., and Stolz, J., 2009, Arsenic in the evolution of earth and extraterrestrial ecosystems: Geomicrobiology Journal, v. 26, no. 7, p. 522-536, https://doi.org/10.1080/01490450903102525.","productDescription":"15 p.","startPage":"522","endPage":"536","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":217123,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01490450903102525"},{"id":245040,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed95e4b0c8380cd498ba","contributors":{"authors":[{"text":"Oremland, R.S.","contributorId":97512,"corporation":false,"usgs":true,"family":"Oremland","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":460678,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saltikov, C.W.","contributorId":16216,"corporation":false,"usgs":true,"family":"Saltikov","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":460675,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wolfe-Simon, Felisa","contributorId":37167,"corporation":false,"usgs":true,"family":"Wolfe-Simon","given":"Felisa","affiliations":[],"preferred":false,"id":460676,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stolz, J.F.","contributorId":94022,"corporation":false,"usgs":true,"family":"Stolz","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":460677,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037369,"text":"70037369 - 2009 - In vitro biology of fibropapilloma-associated turtle herpesvirus and host cells in Hawaiian green turtles (Chelonia mydas)","interactions":[],"lastModifiedDate":"2017-10-04T13:37:51","indexId":"70037369","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2301,"text":"Journal of General Virology","active":true,"publicationSubtype":{"id":10}},"title":"In vitro biology of fibropapilloma-associated turtle herpesvirus and host cells in Hawaiian green turtles (Chelonia mydas)","docAbstract":"Fibropapillomatosis (FP) of green turtles has a global distribution and causes debilitating tumours of the skin and internal organs in several species of marine turtles. FP is associated with a presently non-cultivable alphaherpesvirus Chelonid fibropapilloma-associated herpesvirus (CFPHV). Our aims were to employ quantitative PCR targeted to pol DNA of CFPHV to determine (i) if DNA sequesters by tumour size and/or cell type, (ii) whether subculturing of cells is a viable strategy for isolating CFPHV and (iii) whether CFPHV can be induced to a lytic growth cycle in vitro using chemical modulators of replication (CMRs), temperature variation or co-cultivation. Additional objectives included determining whether non-tumour and tumour cells behave differently in vitro and confirming the phenotype of cultured cells using cell-type-specific antigens. CFPHV pol DNA was preferentially concentrated in dermal fibroblasts of skin tumours and the amount of viral DNA per cell was independent of tumour size. Copy number of CFPHV pol DNA per cell rapidly decreased with cell doubling of tumour-derived fibroblasts in culture. Attempts to induce viral replication in known CFPHV-DNA-positive cells using temperature or CMR failed. No significant differences were seen in in vitro morphology or growth characteristics of fibroblasts from tumour cells and paired normal skin, nor from CFPHV pol-DNA-positive intestinal tumour cells. Tumour cells were confirmed as fibroblasts or keratinocytes by positive staining with anti-vimentin and anti-pancytokeratin antibodies, respectively. CFPHV continues to be refractory to in vitro cultivation.
","language":"English","publisher":"Microbiology Society","doi":"10.1099/vir.0.011650-0","issn":"00221317","usgsCitation":"Work, T.M., Dagenais, J., Balazs, G.H., Schumacher, J., Lewis, T.D., Leong, J.C., Casey, R.N., and Casey, J.W., 2009, In vitro biology of fibropapilloma-associated turtle herpesvirus and host cells in Hawaiian green turtles (Chelonia mydas): Journal of General Virology, v. 90, no. 8, p. 1943-1950, https://doi.org/10.1099/vir.0.011650-0.","productDescription":"8 p.","startPage":"1943","endPage":"1950","numberOfPages":"8","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":476385,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1099/vir.0.011650-0","text":"Publisher Index 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,{"id":70037370,"text":"70037370 - 2009 - The puzzle of the 1996 Bárdarbunga, Iceland, earthquake: no volumetric component in the source mechanism","interactions":[],"lastModifiedDate":"2017-10-31T14:04:37","indexId":"70037370","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"The puzzle of the 1996 Bárdarbunga, Iceland, earthquake: no volumetric component in the source mechanism","docAbstract":"A volcanic earthquake with Mw 5.6 occurred beneath the Bárdarbunga caldera in Iceland on 29 September 1996. This earthquake is one of a decade-long sequence of ![\"Graphic\"](\"http://bssa.geoscienceworld.org/content/99/5/3077/embed/inline-graphic-1.gif\")
events at Bárdarbunga with non-double-couple mechanisms in the Global Centroid Moment Tensor catalog. Fortunately, it was recorded well by the regional-scale Iceland Hotspot Project seismic experiment. We investigated the event with a complete moment tensor inversion method using regional long-period seismic waveforms and a composite structural model. The moment tensor inversion using data from stations of the Iceland Hotspot Project yields a non-double-couple solution with a 67% vertically oriented compensated linear vector dipole component, a 32% double-couple component, and a statistically insignificant (2%) volumetric (isotropic) contraction. This indicates the absence of a net volumetric component, which is puzzling in the case of a large volcanic earthquake that apparently is not explained by shear slip on a planar fault. A possible volcanic mechanism that can produce an earthquake without a volumetric component involves two offset sources with similar but opposite volume changes. We show that although such a model cannot be ruled out, the circumstances under which it could happen are rare.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120080361","issn":"00371106","usgsCitation":"Tkalcic, H., Dreger, D.S., Foulger, G.R., and Julian, B.R., 2009, The puzzle of the 1996 Bárdarbunga, Iceland, earthquake: no volumetric component in the source mechanism: Bulletin of the Seismological Society of America, v. 99, no. 5, p. 3077-3085, https://doi.org/10.1785/0120080361.","productDescription":"9 p.","startPage":"3077","endPage":"3085","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-010998","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":245099,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217177,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120080361"}],"country":"Iceland","otherGeospatial":"Bardarbunga","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -18.6328125,\n 64.31611045403284\n ],\n [\n -18.6328125,\n 64.92354174306496\n ],\n [\n -16.820068359375,\n 64.92354174306496\n ],\n [\n -16.820068359375,\n 64.31611045403284\n ],\n [\n -18.6328125,\n 64.31611045403284\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"99","issue":"5","noUsgsAuthors":false,"publicationDate":"2009-09-23","publicationStatus":"PW","scienceBaseUri":"505baedfe4b08c986b3243ce","contributors":{"authors":[{"text":"Tkalcic, Hrvoje","contributorId":70569,"corporation":false,"usgs":true,"family":"Tkalcic","given":"Hrvoje","email":"","affiliations":[],"preferred":false,"id":460716,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dreger, Douglas S.","contributorId":55600,"corporation":false,"usgs":false,"family":"Dreger","given":"Douglas","email":"","middleInitial":"S.","affiliations":[{"id":6643,"text":"University of California - Berkeley","active":true,"usgs":false}],"preferred":false,"id":460715,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foulger, Gillian R.","contributorId":34796,"corporation":false,"usgs":true,"family":"Foulger","given":"Gillian","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":460714,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Julian, Bruce R.","contributorId":50063,"corporation":false,"usgs":true,"family":"Julian","given":"Bruce","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":460717,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037371,"text":"70037371 - 2009 - Toward production from gas hydrates: Current status, assessment of resources, and simulation-based evaluation of technology and potential","interactions":[],"lastModifiedDate":"2012-03-12T17:22:08","indexId":"70037371","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Toward production from gas hydrates: Current status, assessment of resources, and simulation-based evaluation of technology and potential","docAbstract":"Gas hydrates (GHs) are a vast energy resource with global distribution in the permafrost and in the oceans. Even if conservative estimates are considered and only a small fraction is recoverable, the sheer size of the resource is so large that it demands evaluation as a potential energy source. In this review paper, we discuss the distribution of natural GH accumulations, the status of the primary international research and development (R&D) programs, and the remaining science and technological challenges facing the commercialization of production. After a brief examination of GH accumulations that are well characterized and appear to be models for future development and gas production, we analyze the role of numerical simulation in the assessment of the hydrate-production potential, identify the data needs for reliable predictions, evaluate the status of knowledge with regard to these needs, discuss knowledge gaps and their impact, and reach the conclusion that the numerical-simulation capabilities are quite advanced and that the related gaps either are not significant or are being addressed. We review the current body of literature relevant to potential productivity from different types of GH deposits and determine that there are consistent indications of a large production potential at high rates across long periods from a wide variety of hydrate deposits. Finally, we identify (a) features, conditions, geology and techniques that are desirable in potential production targets; (b) methods to maximize production; and (c) some of the conditions and characteristics that render certain GH deposits undesirable for production. Copyright ?? 2009 Society of Petroleum Engineers.","largerWorkTitle":"SPE Reservoir Evaluation and Engineering","language":"English","issn":"10946470","usgsCitation":"Moridis, G.J., Collett, T.S., Boswell, R., Kurihara, M., Reagan, M.T., Koh, C., and Sloan, E.D., 2009, Toward production from gas hydrates: Current status, assessment of resources, and simulation-based evaluation of technology and potential, in SPE Reservoir Evaluation and Engineering, v. 12, no. 5, p. 745-771.","startPage":"745","endPage":"771","numberOfPages":"27","costCenters":[],"links":[{"id":245130,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb5bbe4b08c986b326876","contributors":{"authors":[{"text":"Moridis, G. J.","contributorId":64863,"corporation":false,"usgs":false,"family":"Moridis","given":"G.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":460723,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collett, T. S. 0000-0002-7598-4708","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":86342,"corporation":false,"usgs":true,"family":"Collett","given":"T.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":460724,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Boswell, R.","contributorId":35121,"corporation":false,"usgs":true,"family":"Boswell","given":"R.","affiliations":[],"preferred":false,"id":460720,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kurihara, M.","contributorId":54823,"corporation":false,"usgs":true,"family":"Kurihara","given":"M.","email":"","affiliations":[],"preferred":false,"id":460722,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reagan, M. T.","contributorId":52424,"corporation":false,"usgs":false,"family":"Reagan","given":"M.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":460721,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Koh, C.","contributorId":34360,"corporation":false,"usgs":true,"family":"Koh","given":"C.","affiliations":[],"preferred":false,"id":460719,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Sloan, E. D.","contributorId":8625,"corporation":false,"usgs":false,"family":"Sloan","given":"E.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":460718,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70037372,"text":"70037372 - 2009 - Fast forward modeling of Titan's infrared spectra to invert VIMS/Cassini hyperspectral images","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037372","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Fast forward modeling of Titan's infrared spectra to invert VIMS/Cassini hyperspectral images","docAbstract":"The surface of Titan, the largest icy moon of Saturn, is veiled by a very thick and hazy atmosphere. The Visual and Infrared Mapping Spectrometer onboard the Cassini spacecraft, in orbit around Saturn since July 2004, conduct an intensive survey of Titan with the objective to understand the complex nature of the atmosphere and surface of the mysterious moon and the way they interact. Accurate radiative transfer modeling is necessary to analyze Titan's infrared spectra, but are often very computer resources demanding. As Cassini has gathered hitherto millions of spectra of Titan and will still observe it until at least 2010, we report here on the development of a new rapid, simple and versatile radiative transfer model specially designed to invert VIMS datacubes. ?? 2009 IEEE.","largerWorkTitle":"WHISPERS '09 - 1st Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","conferenceTitle":"WHISPERS '09 - 1st Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","conferenceDate":"26 August 2009 through 28 August 2009","conferenceLocation":"Grenoble","language":"English","doi":"10.1109/WHISPERS.2009.5289065","isbn":"9781424446872","usgsCitation":"Rodriguez, S., Le Mouélic, S., Rannou, P., Combe, J.#., Corre, L., Tobie, G., Barnes, J.W., Sotin, C., Brown, R.H., Baines, K.H., Buratti, B.J., Clark, R.N., and Nicholson, P.D., 2009, Fast forward modeling of Titan's infrared spectra to invert VIMS/Cassini hyperspectral images, in WHISPERS '09 - 1st Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, Grenoble, 26 August 2009 through 28 August 2009, https://doi.org/10.1109/WHISPERS.2009.5289065.","costCenters":[],"links":[{"id":217204,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/WHISPERS.2009.5289065"},{"id":245131,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0efce4b0c8380cd536e5","contributors":{"authors":[{"text":"Rodriguez, S.","contributorId":54329,"corporation":false,"usgs":false,"family":"Rodriguez","given":"S.","email":"","affiliations":[],"preferred":false,"id":460732,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Le Mouélic, Stéphane","contributorId":99400,"corporation":false,"usgs":false,"family":"Le Mouélic","given":"Stéphane","affiliations":[],"preferred":false,"id":460737,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rannou, P.","contributorId":19761,"corporation":false,"usgs":true,"family":"Rannou","given":"P.","email":"","affiliations":[],"preferred":false,"id":460727,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Combe, J. #NAME?","contributorId":37982,"corporation":false,"usgs":false,"family":"Combe","given":"J.","email":"","middleInitial":"#NAME?","affiliations":[],"preferred":false,"id":460730,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Corre, L.L.","contributorId":73853,"corporation":false,"usgs":true,"family":"Corre","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":460735,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tobie, G.","contributorId":89267,"corporation":false,"usgs":true,"family":"Tobie","given":"G.","affiliations":[],"preferred":false,"id":460736,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Barnes, J. W.","contributorId":14554,"corporation":false,"usgs":false,"family":"Barnes","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":460726,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Sotin, Christophe","contributorId":53924,"corporation":false,"usgs":false,"family":"Sotin","given":"Christophe","email":"","affiliations":[],"preferred":false,"id":460731,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Brown, R. H.","contributorId":19931,"corporation":false,"usgs":false,"family":"Brown","given":"R.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":460728,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Baines, K. H.","contributorId":37868,"corporation":false,"usgs":false,"family":"Baines","given":"K.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":460729,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Buratti, B. J.","contributorId":69280,"corporation":false,"usgs":false,"family":"Buratti","given":"B.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":460734,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Clark, R. N.","contributorId":6568,"corporation":false,"usgs":true,"family":"Clark","given":"R.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":460725,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Nicholson, P. D.","contributorId":54330,"corporation":false,"usgs":false,"family":"Nicholson","given":"P.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":460733,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70037393,"text":"70037393 - 2009 - Factors influencing tropical island freshwater fishes:Species, status, and management implications in puerto rico [Factores que influencian a los peces tropicales de agua dulce: Especies, estado actual e implicaciones para el manejo en Puerto Rico]","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70037393","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1657,"text":"Fisheries","onlineIssn":"1548-8446","printIssn":"0363-2415","active":true,"publicationSubtype":{"id":10}},"title":"Factors influencing tropical island freshwater fishes:Species, status, and management implications in puerto rico [Factores que influencian a los peces tropicales de agua dulce: Especies, estado actual e implicaciones para el manejo en Puerto Rico]","docAbstract":"Anthropogenic effects including river regulation, watershed development, contamination, and fish introductions have substantially affected the majority of freshwater habitats in Europe and North America. This pattern of resource development and degradation is widespread in the tropics, and often little is known about the resources before they are lost. This article describes the freshwater resources of Puerto Rico and identifies factors that threaten conservation of native fishes. The fishes found in freshwater habitats of Puerto Rico represent a moderately diverse assemblage composed of 14 orders, 29 families, and 82 species. There are fewer than 10 species of native peripherally-freshwater fish that require a link to marine systems. Introductions of nonindigenous species have greatly expanded fish diversity in freshwater systems, and native estuarine and marine species (18 families) also commonly enter lowland rivers and brackish lagoons. Environmental alterations, including land use and development, stream channelization, pollution, and the impoundment of rivers, combined with nonnative species introductions threaten the health and sustainability of aquatic resources in Puerto Rico. Six principal areas for attention that are important influences on the current and future status of the freshwater fish resources of Puerto Rico are identified and discussed.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Fisheries","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"Spanish","issn":"03632415","usgsCitation":"Wesley, N.J., Lilyestrom, C.G., and Kwak, T., 2009, Factors influencing tropical island freshwater fishes:Species, status, and management implications in puerto rico [Factores que influencian a los peces tropicales de agua dulce: Especies, estado actual e implicaciones para el manejo en Puerto Rico]: Fisheries, v. 34, no. 11, p. 546-554.","startPage":"546","endPage":"554","numberOfPages":"9","costCenters":[],"links":[{"id":245014,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0ed0e4b0c8380cd5363d","contributors":{"authors":[{"text":"Wesley, Neal J.","contributorId":55667,"corporation":false,"usgs":true,"family":"Wesley","given":"Neal","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":460853,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lilyestrom, Craig G.","contributorId":54821,"corporation":false,"usgs":true,"family":"Lilyestrom","given":"Craig","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":460852,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kwak, T.J.","contributorId":104236,"corporation":false,"usgs":true,"family":"Kwak","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":460854,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70037394,"text":"70037394 - 2009 - Global distribution of bedrock exposures on Mars using THEMIS high-resolution thermal inertia","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70037394","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Global distribution of bedrock exposures on Mars using THEMIS high-resolution thermal inertia","docAbstract":"We investigate high thermal inertia surfaces using the Mars Odyssey Thermal Emission Imaging System (THEMIS) nighttime temperature images (100 m/pixel spatial sampling). For this study, we interpret any pixel in a THEMIS image with a thermal inertia over 1200 J m-2 K-1 s-1/2 as \"bedrock\" which represents either in situ rock exposures or rock-dominated surfaces. Three distinct morphologies, ranked from most to least common, are associated with these high thermal inertia surfaces: (1) valley and crater walls associated with mass wasting and high surface slope angles; (2) floors of craters with diameters >25 km and containing melt or volcanics associated with larger, high-energy impacts; and (3) intercrater surfaces with compositions significantly more mafic than the surrounding regolith. In general, bedrock instances on Mars occur as small exposures (less than several square kilometers) situated in lower-albedo (<0.18), moderate to high thermal inertia (>350 J m-2 K-1 s-1/2), and relatively dust-free (dust cover index <0.95) regions; however, there are instances that do not follow these generalizations. Most instances are concentrated in the southern highlands, with very few located at high latitudes (poleward of 45oN and 58oS), suggesting enhanced mechanical breakdown probably associated with permafrost. Overall, Mars has very little exposed bedrock with only 960 instances identified from 75oS to 75oN with likely <3500 km2 exposed, representing???1% of the total surface area. These data indicate that Mars has likely undergone large-scale surface processing and reworking, both chemically and mechanically, either destroying or masking a majority of the bedrock exposures on the planet. Copyright 2009 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2009JE003363","issn":"01480227","usgsCitation":"Edwards, C., Bandfield, J., Christensen, P.R., and Fergason, R., 2009, Global distribution of bedrock exposures on Mars using THEMIS high-resolution thermal inertia: Journal of Geophysical Research E: Planets, v. 114, no. 11, https://doi.org/10.1029/2009JE003363.","costCenters":[],"links":[{"id":217098,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2009JE003363"},{"id":245015,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"114","issue":"11","noUsgsAuthors":false,"publicationDate":"2009-11-04","publicationStatus":"PW","scienceBaseUri":"505a2942e4b0c8380cd5a7da","contributors":{"authors":[{"text":"Edwards, C.S.","contributorId":35986,"corporation":false,"usgs":true,"family":"Edwards","given":"C.S.","email":"","affiliations":[],"preferred":false,"id":460857,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bandfield, J. L.","contributorId":59990,"corporation":false,"usgs":false,"family":"Bandfield","given":"J. L.","affiliations":[],"preferred":false,"id":460858,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christensen, P. R.","contributorId":7819,"corporation":false,"usgs":false,"family":"Christensen","given":"P.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":460855,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fergason, R.L.","contributorId":13786,"corporation":false,"usgs":true,"family":"Fergason","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":460856,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037395,"text":"70037395 - 2009 - The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico","interactions":[],"lastModifiedDate":"2023-12-07T14:37:53.298764","indexId":"70037395","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico","docAbstract":"Since systematic measurements of Louisiana continental-shelf waters were initiated in 1985, hypoxia (oxygen content <2 mg L-1) has increased considerably in an area termed the dead zone. Monitoring and modeling studies have concluded that the expansion of the Louisiana shelf dead zone is related to increased anthropogenically derived nutrient delivery from the Mississippi River drainage basin, physical and hydrographical changes of the Louisiana Shelf, and possibly coastal erosion of wetlands in southern Louisiana. In order to track the development and expansion of seasonal low-oxygen conditions on the Louisiana shelf prior to 1985, we used a specific low-oxygen foraminiferal faunal proxy, the PEB index, which has been shown statistically to represent the modern Louisiana hypoxia zone. We constructed a network of 13 PEB records with excess 210Pb-derived chronologies to establish the development of low-oxygen and hypoxic conditions over a large portion of the modern dead zone for the last 100 years. The PEB index record indicates that areas of low-oxygen bottom water began to appear in the early 1910s in isolated hotspots near the Mississippi Delta and rapidly expanded across the entire Louisiana shelf beginning in the 1950s. Since ???1950, the percentage of PEB species has steadily increased over a large portion of the modern dead zone. By 1960, subsurface low-oxygen conditions were occurring seasonally over a large part of the geographic area now known as the dead zone. The long-term trends in the PEB index are consistent with the 20th-century observational and proxy data for low oxygen and hypoxia. ?? 2009 US Government.","language":"English","publisher":"Springer","doi":"10.1007/s00367-009-0158-2","usgsCitation":"Osterman, L., Poore, R., Swarzenski, P., Senn, D., and DiMarco, S.F., 2009, The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico: Geo-Marine Letters, v. 29, no. 6, p. 405-414, https://doi.org/10.1007/s00367-009-0158-2.","productDescription":"10 p.","startPage":"405","endPage":"414","numberOfPages":"10","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":245046,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Gulf of Mexico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -94.10236111182375,\n 29.57870136527805\n ],\n [\n -94.10236111182375,\n 27.344152892983175\n ],\n [\n -89.41789316398751,\n 27.344152892983175\n ],\n [\n -89.41789316398751,\n 29.57870136527805\n ],\n [\n -94.10236111182375,\n 29.57870136527805\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"29","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-09-02","publicationStatus":"PW","scienceBaseUri":"505ba64ee4b08c986b321038","contributors":{"authors":[{"text":"Osterman, L.E.","contributorId":53836,"corporation":false,"usgs":true,"family":"Osterman","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":460863,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Poore, R.Z.","contributorId":35314,"corporation":false,"usgs":true,"family":"Poore","given":"R.Z.","email":"","affiliations":[],"preferred":false,"id":460861,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":460860,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Senn, D.B.","contributorId":37178,"corporation":false,"usgs":true,"family":"Senn","given":"D.B.","affiliations":[],"preferred":false,"id":460862,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"DiMarco, Steven F.","contributorId":15435,"corporation":false,"usgs":true,"family":"DiMarco","given":"Steven","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":460859,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70037396,"text":"70037396 - 2009 - Optical dating of the anastasia formation, northeastern florida, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70037396","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3443,"text":"Southeastern Geology","active":true,"publicationSubtype":{"id":10}},"title":"Optical dating of the anastasia formation, northeastern florida, USA","docAbstract":"The single-aliquot regenerative-dose (SAR) procedure was used to obtain optically stimulated luminescence ages to determine the depositional age of the upper part of the Anastasia Formation. This unit, which crops out along the east coast of Florida, is one of the most culturally and economically important coquina deposits in North America. Rock samples from the upper three meters of exposure at three locations were collected. Additional materials for paleontological analysis were also taken. Based on our samples, the luminescence ages of the Anastasia Formation are well within marine isotope stage 5, which is supported by the results of Osmond et al. (1970) based on U/Th ages. The associated fossil assemblages support our luminescence age determinations. Associated fossils fall within the Rancholabrean North American Land Mammal Age (300 10 ka) and the fossil mollusk assemblage consists entirely of modern species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Southeastern Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00383678","usgsCitation":"Burdette, K., Rink, J., Means, G., and Portell, R., 2009, Optical dating of the anastasia formation, northeastern florida, USA: Southeastern Geology, v. 46, no. 4, p. 173-185.","startPage":"173","endPage":"185","numberOfPages":"13","costCenters":[],"links":[{"id":245047,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6ecde4b0c8380cd757e8","contributors":{"authors":[{"text":"Burdette, K.E.","contributorId":41253,"corporation":false,"usgs":true,"family":"Burdette","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":460865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rink, J.W.","contributorId":103120,"corporation":false,"usgs":true,"family":"Rink","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":460867,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Means, G.H.","contributorId":76348,"corporation":false,"usgs":true,"family":"Means","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":460866,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Portell, R.W.","contributorId":37990,"corporation":false,"usgs":true,"family":"Portell","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":460864,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037399,"text":"70037399 - 2009 - Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037399","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses","docAbstract":"Age estimation of individuals is often an integral part of species management research, and a number of ageestimation techniques are commonly employed. Often, the error in these techniques is not quantified or accounted for in other analyses, particularly in growth curve models used to describe physiological responses to environment and human impacts. Also, noninvasive, quick, and inexpensive methods to estimate age are needed. This research aims to provide two Bayesian methods to (i) incorporate age uncertainty into an age-length Schnute growth model and (ii) produce a method from the growth model to estimate age from length. The methods are then employed for Florida manatee (Trichechus manatus) carcasses. After quantifying the uncertainty in the aging technique (counts of ear bone growth layers), we fit age-length data to the Schnute growth model separately by sex and season. Independent prior information about population age structure and the results of the Schnute model are then combined to estimate age from length. Results describing the age-length relationship agree with our understanding of manatee biology. The new methods allow us to estimate age, with quantified uncertainty, for 98% of collected carcasses: 36% from ear bones, 62% from length.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Fisheries and Aquatic Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/F09-117","issn":"0706652X","usgsCitation":"Schwarz, L., and Runge, M., 2009, Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses: Canadian Journal of Fisheries and Aquatic Sciences, v. 66, no. 10, p. 1775-1789, https://doi.org/10.1139/F09-117.","startPage":"1775","endPage":"1789","numberOfPages":"15","costCenters":[],"links":[{"id":245100,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217178,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/F09-117"}],"volume":"66","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3099e4b0c8380cd5d7a9","contributors":{"authors":[{"text":"Schwarz, L.K.","contributorId":59655,"corporation":false,"usgs":true,"family":"Schwarz","given":"L.K.","email":"","affiliations":[],"preferred":false,"id":460881,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Runge, M.C. 0000-0002-8081-536X","orcid":"https://orcid.org/0000-0002-8081-536X","contributorId":49312,"corporation":false,"usgs":true,"family":"Runge","given":"M.C.","affiliations":[],"preferred":false,"id":460880,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70037400,"text":"70037400 - 2009 - Rayleigh-wave mode separation by high-resolution linear radon transform","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037400","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Rayleigh-wave mode separation by high-resolution linear radon transform","docAbstract":"Multichannel analysis of surface waves (MASW) method is an effective tool for obtaining vertical shear wave profiles from a single non-invasive measurement. One key step of the MASW method is generation of a dispersion image and extraction of a reliable dispersion curve from raw multichannel shot records. Because different Rayleigh-wave modes normally interfere with each other in the time and space domain, it is necessary to perform mode separation and reconstruction to increase the accuracy of phase velocities determined from a dispersion image. In this paper, we demonstrate the effectiveness of high-resolution linear Radon transform (LRT) as a means of separating and reconstructing multimode, dispersive Rayleigh-wave energy. We first introduce high-resolution LRT methods and Rayleigh-wave mode separation using high-resolution LRT. Next, we use synthetic data and a real-world example to demonstrate the effectiveness of Rayleigh-wave mode separation using high-resolution LRT. Our synthetic and real-world results demonstrate that (1) high-resolution LRT successfully separates and reconstructs multimode dispersive Rayleigh-wave energy with high resolution allowing the multimode energy to be more accurately determined. The horizontal resolution of the Rayleigh-wave method can be increased by extraction of dispersion curves from a pair of traces in the mode-separated shot gather and (2) multimode separation and reconstruction expand the usable frequency range of higher mode dispersive energy, which increases the depth of investigation and provides a means for accurately determining cut-off frequencies. ?? 2009 The Authors Journal compilation ?? 2009 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2009.04277.x","issn":"0956540X","usgsCitation":"Luo, Y., Xia, J., Miller, R., Xu, Y., Liu, J., and Liu, Q., 2009, Rayleigh-wave mode separation by high-resolution linear radon transform: Geophysical Journal International, v. 179, no. 1, p. 254-264, https://doi.org/10.1111/j.1365-246X.2009.04277.x.","startPage":"254","endPage":"264","numberOfPages":"11","costCenters":[],"links":[{"id":245101,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217179,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2009.04277.x"}],"volume":"179","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a955fe4b0c8380cd81994","contributors":{"authors":[{"text":"Luo, Y.","contributorId":28417,"corporation":false,"usgs":true,"family":"Luo","given":"Y.","email":"","affiliations":[],"preferred":false,"id":460884,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":460886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":460887,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":460885,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Liu, J.","contributorId":23672,"corporation":false,"usgs":false,"family":"Liu","given":"J.","affiliations":[],"preferred":false,"id":460883,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Liu, Q.","contributorId":17827,"corporation":false,"usgs":true,"family":"Liu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":460882,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70037401,"text":"70037401 - 2009 - Late Proterozoic-Paleozoic evolution of the Arctic Alaska-Chukotka terrane based on U-Pb igneous and detrital zircon ages: Implications for Neoproterozoic paleogeographic reconstructions","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70037401","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Late Proterozoic-Paleozoic evolution of the Arctic Alaska-Chukotka terrane based on U-Pb igneous and detrital zircon ages: Implications for Neoproterozoic paleogeographic reconstructions","docAbstract":"The Seward Peninsula of northwestern Alaska is part of the Arctic Alaska-Chukotka terrane, a crustal fragment exotic to western Laurentia with an uncertain origin and pre-Mesozoic evolution. U-Pb zircon geochronology on deformed igneous rocks reveals a previously unknown intermediate-felsic volcanic event at 870 Ma, coeval with rift-related magmatism associated with early breakup of eastern Rodinia. Orthogneiss bodies on Seward Peninsula yielded numerous 680 Ma U-Pb ages. The Arctic Alaska-Chukotka terrane has pre-Neoproterozoic basement based on Mesoproterozoic Nd model ages from both 870 Ma and 680 Ma igneous rocks, and detrital zircon ages between 2.0 and 1.0 Ga in overlying cover rocks. Small-volume magmatism occurred in Devonian time, based on U-Pb dating of granitic rocks. U-Pb dating of detrital zircons in 12 samples of metamorphosed Paleozoic siliciclastic cover rocks to this basement indicates that the dominant zircon age populations in the 934 zircons analyzed are found in the range 700-540 Ma, with prominent peaks at 720-660 Ma, 620-590 Ma, 560-510 Ma, 485 Ma, and 440-400 Ma. Devonian- and Pennsylvanian-age peaks are present in the samples with the youngest detrital zircons. These data show that the Seward Peninsula is exotic to western Laurentia because of the abundance of Neoproterozoic detrital zircons, which are rare or absent in Lower Paleozoic Cordilleran continental shelf rocks. Maximum depositional ages inferred from the youngest detrital age peaks include latest Proterozoic-Early Cambrian, Cambrian, Ordovician, Silurian, Devonian, and Pennsylvanian. These maximum depositional ages overlap with conodont ages reported from fossiliferous carbonate rocks on Seward Peninsula. The distinctive features of the Arctic Alaska-Chukotka terrane include Neoproterozoic felsic magmatic rocks intruding 2.0-1.1 Ga crust overlain by Paleozoic carbonate rocks and Paleozoic siliciclastic rocks with Neoproterozoic detrital zircons. The Neoproterozoic ages are similar to those in the peri-Gondwanan Avalonian-Cadomian arc system, the Timanide orogen of Baltica, and other circum-Arctic terranes that were proximal to Arctic Alaska prior to the opening of the Amerasian basin in the Early Cretaceous. Our Neoproterozoic reconstruction places the Arctic Alaska-Chukotka terrane in a position near Baltica, northeast of Laurentia, in an arc system along strike with the Avalonian-Cadomian arc terranes. Previously published faunal data indicate that Seward Peninsula had Siberian and Laurentian links by Early Ordovician time. The geologic links between the Arctic Alaska-Chukotka terrane and eastern Laurentia, Baltica, peri-Gondwanan arc terranes, and Siberia from the Paleoproterozoic to the Paleozoic help to constrain paleogeographic models from the Neoproterozoic history of Rodinia to the Mesozoic opening of the Arctic basin. ?? 2009 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/B26510.1","issn":"00167606","usgsCitation":"Amato, J., Toro, J., Miller, E.L., Gehrels, G.E., Farmer, G.L., Gottlieb, E., and Till, A., 2009, Late Proterozoic-Paleozoic evolution of the Arctic Alaska-Chukotka terrane based on U-Pb igneous and detrital zircon ages: Implications for Neoproterozoic paleogeographic reconstructions: Geological Society of America Bulletin, v. 121, no. 9-10, p. 1219-1235, https://doi.org/10.1130/B26510.1.","startPage":"1219","endPage":"1235","numberOfPages":"17","costCenters":[],"links":[{"id":217129,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B26510.1"},{"id":245048,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"121","issue":"9-10","noUsgsAuthors":false,"publicationDate":"2009-07-21","publicationStatus":"PW","scienceBaseUri":"505a4522e4b0c8380cd67070","contributors":{"authors":[{"text":"Amato, J.M.","contributorId":63214,"corporation":false,"usgs":true,"family":"Amato","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":460890,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Toro, J.","contributorId":88502,"corporation":false,"usgs":true,"family":"Toro","given":"J.","email":"","affiliations":[],"preferred":false,"id":460893,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, E. L.","contributorId":75583,"corporation":false,"usgs":true,"family":"Miller","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":460891,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gehrels, G. E.","contributorId":9660,"corporation":false,"usgs":true,"family":"Gehrels","given":"G.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":460888,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Farmer, G. L.","contributorId":97251,"corporation":false,"usgs":false,"family":"Farmer","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":460894,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gottlieb, E.S.","contributorId":80515,"corporation":false,"usgs":true,"family":"Gottlieb","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":460892,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Till, A.B.","contributorId":37755,"corporation":false,"usgs":true,"family":"Till","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":460889,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70037402,"text":"70037402 - 2009 - Dune mobility and aridity at the desert margin of northern China at a time of peak monsoon strength","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037402","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Dune mobility and aridity at the desert margin of northern China at a time of peak monsoon strength","docAbstract":"Wind-blown sands were mobile at many sites along the desert margin in northern China during the early Holocene (11.5-8 ka ago), based on extensive new numerical dating. This mobility implies low effective moisture at the desert margin, in contrast to growing evidence for greater than modern monsoon precipitation at the same time in central and southern China. Dry conditions in the early Holocene at the desert margin can be explained through a dynamic link between enhanced diabatic heating in the core region of the strengthened monsoon and increased subsidence in drylands to the north, combined with high evapotranspiration rates due to high summer temperatures. After 8 ka ago, as the monsoon weakened and lower temperatures reduced evapotranspiration, eolian sands were stabilized by vegetation. Aridity and dune mobility at the desert margin and a strengthened monsoon can both be explained as responses to high summer insolation in the early Holocene. ?? 2009 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G30240A.1","issn":"00917613","usgsCitation":"Mason, J., Lu, H., Zhou, Y., Miao, X., Swinehart, J.B., Liu, Z., Goble, R., and Yi, S., 2009, Dune mobility and aridity at the desert margin of northern China at a time of peak monsoon strength: Geology, v. 37, no. 10, p. 947-950, https://doi.org/10.1130/G30240A.1.","startPage":"947","endPage":"950","numberOfPages":"4","costCenters":[],"links":[{"id":217151,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G30240A.1"},{"id":245072,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0416e4b0c8380cd50792","contributors":{"authors":[{"text":"Mason, J.A.","contributorId":31507,"corporation":false,"usgs":true,"family":"Mason","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":460897,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, H.","contributorId":49936,"corporation":false,"usgs":true,"family":"Lu","given":"H.","email":"","affiliations":[],"preferred":false,"id":460899,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhou, Y.","contributorId":70526,"corporation":false,"usgs":true,"family":"Zhou","given":"Y.","email":"","affiliations":[],"preferred":false,"id":460901,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miao, X.","contributorId":60753,"corporation":false,"usgs":true,"family":"Miao","given":"X.","email":"","affiliations":[],"preferred":false,"id":460900,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Swinehart, J. B.","contributorId":25244,"corporation":false,"usgs":true,"family":"Swinehart","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":460896,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Liu, Z.","contributorId":70943,"corporation":false,"usgs":true,"family":"Liu","given":"Z.","email":"","affiliations":[],"preferred":false,"id":460902,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Goble, R.J.","contributorId":21265,"corporation":false,"usgs":true,"family":"Goble","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":460895,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Yi, S.","contributorId":33936,"corporation":false,"usgs":false,"family":"Yi","given":"S.","email":"","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":460898,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70037404,"text":"70037404 - 2009 - Landslide movement in southwest Colorado triggered by atmospheric tides","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037404","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2845,"text":"Nature Geoscience","active":true,"publicationSubtype":{"id":10}},"title":"Landslide movement in southwest Colorado triggered by atmospheric tides","docAbstract":"Landslides are among the most hazardous of geological processes, causing thousands of casualties and damage on the order of billions of dollars annually. The movement of most landslides occurs along a discrete shear surface, and is triggered by a reduction in the frictional strength of the surface. Infiltration of water into the landslide from rainfall and snowmelt and ground motion from earthquakes are generally implicated in lowering the frictional strength of this surface. However, solid-Earth and ocean tides have recently been shown to trigger shear sliding in other processes, such as earthquakes and glacial motion. Here we use observations and numerical modelling to show that a similar processatmospheric tidescan trigger movement in an ongoing landslide. The Slumgullion landslide, located in the SanJuan Mountains of Colorado, shows daily movement, primarily during diurnal low tides of the atmosphere. According to our model, the tidal changes in air pressure cause air and water in the sediment pores to flow vertically, altering the frictional stress of the shear surface; upward fluid flow during periods of atmospheric low pressure is most conducive to sliding. We suggest that tidally modulated changes in shear strength may also affect the stability of other landslides, and that the rapid pressure variations associated with some fast-moving storm systems could trigger a similar response. ?? 2009 Macmillan Publishers Limited. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature Geoscience","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/ngeo659","issn":"17520894","usgsCitation":"Schulz, W., Kean, J., and Wang, G., 2009, Landslide movement in southwest Colorado triggered by atmospheric tides: Nature Geoscience, v. 2, no. 12, p. 863-866, https://doi.org/10.1038/ngeo659.","startPage":"863","endPage":"866","numberOfPages":"4","costCenters":[],"links":[{"id":217153,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/ngeo659"},{"id":245074,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"12","noUsgsAuthors":false,"publicationDate":"2009-11-01","publicationStatus":"PW","scienceBaseUri":"505a4430e4b0c8380cd66924","contributors":{"authors":[{"text":"Schulz, W.H.","contributorId":61225,"corporation":false,"usgs":true,"family":"Schulz","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":460907,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":460908,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wang, G.","contributorId":11034,"corporation":false,"usgs":true,"family":"Wang","given":"G.","email":"","affiliations":[],"preferred":false,"id":460906,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70037418,"text":"70037418 - 2009 - Evaluating wildlife response to coastal dune habitat restoration in san francisco, california","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037418","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1462,"text":"Ecological Restoration","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating wildlife response to coastal dune habitat restoration in san francisco, california","docAbstract":"The vast dune system that once dominated the entire western half of the San Francisco peninsula in California has been reduced to a few fragments that conserve locally threatened plant and animal species. We measured the effects of ongoing restoration efforts on wildlife abundance and diversity on one of the largest of these fragments, Fort Funston in the Golden Gate National Recreation Area. Efforts included removal of non-native species, active restoration of native dune vegetation, and restricted visitor use. We collected data regarding the composition and abundance of vegetation, birds, and ground-dwelling vertebrates on four treatments including an actively restored area with restricted visitor use, an unrestored area where visitor use had been restricted for ten years, an unrestored area where visitor use had been restricted for two years, and an unrestored area with unrestricted visitor use. Results indicated that the diversity and abundance of wildlife species, as well as the richness and cover of native plant species, were greater in the restored area than in all other sampled areas. Restricted visitor use alone had only modest positive effects on the abundance and diversity of wildlife and the richness and cover of native plant species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Restoration","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3368/er.27.4.439","issn":"15434079","usgsCitation":"Russell, W., Shulzitski, J., and Setty, A., 2009, Evaluating wildlife response to coastal dune habitat restoration in san francisco, california: Ecological Restoration, v. 27, no. 4, p. 439-448, https://doi.org/10.3368/er.27.4.439.","startPage":"439","endPage":"448","numberOfPages":"10","costCenters":[],"links":[{"id":245165,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217237,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3368/er.27.4.439"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-11-09","publicationStatus":"PW","scienceBaseUri":"505a0c05e4b0c8380cd529d3","contributors":{"authors":[{"text":"Russell, W.","contributorId":87785,"corporation":false,"usgs":true,"family":"Russell","given":"W.","email":"","affiliations":[],"preferred":false,"id":460964,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shulzitski, J.","contributorId":76578,"corporation":false,"usgs":true,"family":"Shulzitski","given":"J.","email":"","affiliations":[],"preferred":false,"id":460963,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Setty, A.","contributorId":72620,"corporation":false,"usgs":true,"family":"Setty","given":"A.","email":"","affiliations":[],"preferred":false,"id":460962,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70037419,"text":"70037419 - 2009 - Variable growth and longevity of yellow bullhead (Ameiurus natalis) in the Everglades of south Florida, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037419","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2166,"text":"Journal of Applied Ichthyology","active":true,"publicationSubtype":{"id":10}},"title":"Variable growth and longevity of yellow bullhead (Ameiurus natalis) in the Everglades of south Florida, USA","docAbstract":"Yellow bullhead (Ictaluridae: Ameiurus natalis) is the most abundant ictalurid catfish in the Everglades of southern Florida, USA, and, as both prey and predator, is one of many essential components in the ecological-simulation models used in assessing restoration success in the Everglades. Little is known of its biology and life history in this southernmost portion of its native range; the present study provides the first estimates of age and growth from the Everglades. In total, 144 yellow bullheads of 97-312 mm total length (TL) were collected from canals and marshes of the Everglades between April 2000 and January 2001, and from October 2003 to February 2005. Fish were aged using cross-sections of pectoral spines and ranged from 1-12 years, with the maximum age almost twice that of any yellow bullhead previously reported. Yellow bullheads from south Florida grew relatively rapidly during their first 3 years, but after age 5 growth slowed and fish approached an asymptote of ???214 mm TL. Compared to other populations in the United States, yellow bullhead in the Everglades grew relatively slowly, were smaller at age overall, but survived to older ages. ?? 2009 Blackwell Verlag GmbH.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Ichthyology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1439-0426.2009.01300.x","issn":"01758659","usgsCitation":"Murie, D., Parkyn, D., Loftus, W., and Nico, L., 2009, Variable growth and longevity of yellow bullhead (Ameiurus natalis) in the Everglades of south Florida, USA: Journal of Applied Ichthyology, v. 25, no. 6, p. 740-745, https://doi.org/10.1111/j.1439-0426.2009.01300.x.","startPage":"740","endPage":"745","numberOfPages":"6","costCenters":[],"links":[{"id":476223,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1439-0426.2009.01300.x","text":"Publisher Index Page"},{"id":245166,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217238,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1439-0426.2009.01300.x"}],"volume":"25","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc141e4b08c986b32a4d9","contributors":{"authors":[{"text":"Murie, D.J.","contributorId":89741,"corporation":false,"usgs":true,"family":"Murie","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":460968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parkyn, D.C.","contributorId":29245,"corporation":false,"usgs":true,"family":"Parkyn","given":"D.C.","affiliations":[],"preferred":false,"id":460965,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loftus, W.F.","contributorId":29363,"corporation":false,"usgs":true,"family":"Loftus","given":"W.F.","email":"","affiliations":[],"preferred":false,"id":460966,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nico, L.G. 0000-0002-4488-7737","orcid":"https://orcid.org/0000-0002-4488-7737","contributorId":83052,"corporation":false,"usgs":true,"family":"Nico","given":"L.G.","affiliations":[],"preferred":false,"id":460967,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037421,"text":"70037421 - 2009 - Field tests prove microscale NRU to upgrade low-btu gas","interactions":[],"lastModifiedDate":"2018-02-18T13:36:38","indexId":"70037421","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2941,"text":"Oil & Gas Journal","printIssn":"0030-1388","active":true,"publicationSubtype":{"id":10}},"title":"Field tests prove microscale NRU to upgrade low-btu gas","docAbstract":"The Kansas Geological Survey (University of Kansas) and the American Energies Corp., Wichita, have conducted field tests of a scalable, microscale, N2-rejection unit (NRU) to demonstrate its effectiveness to upgrade low-pressure ((<100 psig) and low-volume (=100 Mcfd) low-btu gas to pipeline quality. The tests aim to develop inexpensive NRU technology, which is designed for low- volume, low-pressure gas wells, to significantly increase the contribution of marginal low-btu gas to the gas supply of the US. The NRU uses two towers and uses three stages, namely, adsorption under pressure, venting to 2 psig, and desorption under vacuum. The modular design allows additional sets of towers to be added or removed to handle increases or decreases in feed volumes. The field tests also reveal that a strong compressor, which is capable of evacuating the tower (volume) as quickly as possible, should be employed to reduce process cycle time and increase plant throughput.","language":"English","publisher":"PennWell Corporation","publisherLocation":"Tulsa, OK","usgsCitation":"Bhattacharya, S., Newell, K.D., Watney, W.L., and Sigel, M., 2009, Field tests prove microscale NRU to upgrade low-btu gas: Oil & Gas Journal, v. 107, no. 40, p. 44-53.","productDescription":"10 p.","startPage":"44","endPage":"53","costCenters":[],"links":[{"id":245198,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":351767,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.ogj.com/articles/print/volume-107/issue-40/Processing/field-tests-prove-microscale-nru-to-upgrade-low-btu-gas.html"}],"volume":"107","issue":"40","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0fe2e4b0c8380cd53a60","contributors":{"authors":[{"text":"Bhattacharya, Saibal","contributorId":78927,"corporation":false,"usgs":false,"family":"Bhattacharya","given":"Saibal","email":"","affiliations":[],"preferred":false,"id":460978,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Newell, K. David","contributorId":76074,"corporation":false,"usgs":true,"family":"Newell","given":"K.","email":"","middleInitial":"David","affiliations":[],"preferred":false,"id":460977,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Watney, W. Lynn","contributorId":60785,"corporation":false,"usgs":true,"family":"Watney","given":"W.","email":"","middleInitial":"Lynn","affiliations":[],"preferred":false,"id":460975,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sigel, Micael","contributorId":47204,"corporation":false,"usgs":false,"family":"Sigel","given":"Micael","email":"","affiliations":[],"preferred":false,"id":460976,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70037422,"text":"70037422 - 2009 - Rock slope stability analysis along the North Carolina section of the Blue Ridge Parkway: Using a geographic information system (GIS) to integrate site data and digital geologic maps","interactions":[],"lastModifiedDate":"2023-11-29T01:25:09.356079","indexId":"70037422","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Rock slope stability analysis along the North Carolina section of the Blue Ridge Parkway: Using a geographic information system (GIS) to integrate site data and digital geologic maps","docAbstract":"In 2008, the North Carolina Geological Survey (NCGS) completed a five-year geologic and geohazards inventory of the 406-km long North Carolina segment of the Blue Ridge Parkway (BRP). The ArcGIS™ format deliverables for rock slopes include a slope movement and slope movement deposit database and maps and site-specific rock slope stability assessments at 158 locations. Database entries for known and potential rock slope failures include: location data, failure modes and dimensions, activity dates and levels, structural and lithologic data, the occurrence of sulfide minerals and acid-producing potential test results. Rock slope stability assessments include photographs of the rock cuts and show locations and orientations of rock data, seepage zones, and kinematic stability analyses. Assigned preliminary geologic hazard ratings of low, moderate and high indicate the generalized relative probability of rock fall and/or rock slide activity at a given location. Statistics compiled based on the database indicate some general patterns within the data. This information provides the National Park Service with tools that can aid in emergency preparedness, and in budgeting mitigation, maintenance and repair measures.
Groundwater pumping has led to extensive water-level declines and seawater intrusion in coastal Los Angeles, California (USA). A SUTRA-based solute-transport model was developed to test the hydraulic implications of a sequence-stratigraphic model of the Dominguez Gap area and to assess the effects of water-management scenarios. The model is two-dimensional, vertical and follows an approximate flow line extending from the Pacific Ocean through the Dominguez Gap area. Results indicate that a newly identified fault system can provide a pathway for transport of seawater and that a stratigraphic boundary located between the Bent Spring and Upper Wilmington sequences may control the vertical movement of seawater. Three 50-year water-management scenarios were considered: (1) no change in water-management practices; (2) installation of a slurry wall; and (3) raising inland water levels to 7.6 m above sea level. Scenario 3 was the most effective by reversing seawater intrusion. The effects of an instantaneous 1-m sea-level rise were also tested using water-management scenarios 1 and 3. Results from two 100-year simulations indicate that a 1-m sea-level rise may accelerate seawater intrusion for scenario 1; however, scenario 3 remains effective for controlling seawater intrusion.
","language":"English","publisher":"Springer","doi":"10.1007/s10040-009-0481-8","issn":"14312174","usgsCitation":"Nishikawa, T., Siade, A.J., Reichard, E.G., Ponti, D.J., Canales, A., and Johnson, T., 2009, Stratigraphic controls on seawater intrusion and implications for groundwater management, Dominguez Gap area of Los Angeles, California, USA: Hydrogeology Journal, v. 17, no. 7, p. 1699-1725, https://doi.org/10.1007/s10040-009-0481-8.","productDescription":"27 p.","startPage":"1699","endPage":"1725","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":245231,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217296,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-009-0481-8"}],"volume":"17","issue":"7","noUsgsAuthors":false,"publicationDate":"2009-05-30","publicationStatus":"PW","scienceBaseUri":"505b98dbe4b08c986b31c167","contributors":{"authors":[{"text":"Nishikawa, Tracy 0000-0002-7348-3838 tnish@usgs.gov","orcid":"https://orcid.org/0000-0002-7348-3838","contributorId":1515,"corporation":false,"usgs":true,"family":"Nishikawa","given":"Tracy","email":"tnish@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":461020,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Siade, Adam J. asiade@usgs.gov","contributorId":1533,"corporation":false,"usgs":true,"family":"Siade","given":"Adam","email":"asiade@usgs.gov","middleInitial":"J.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":461022,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reichard, Eric G. 0000-0002-7310-3866 egreich@usgs.gov","orcid":"https://orcid.org/0000-0002-7310-3866","contributorId":1207,"corporation":false,"usgs":true,"family":"Reichard","given":"Eric","email":"egreich@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":461021,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ponti, Daniel J. 0000-0002-2437-5144 dponti@usgs.gov","orcid":"https://orcid.org/0000-0002-2437-5144","contributorId":1020,"corporation":false,"usgs":true,"family":"Ponti","given":"Daniel","email":"dponti@usgs.gov","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":461024,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Canales, A.G.","contributorId":23789,"corporation":false,"usgs":true,"family":"Canales","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":461019,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johnson, T.A.","contributorId":72593,"corporation":false,"usgs":true,"family":"Johnson","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":461023,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70037429,"text":"70037429 - 2009 - Performance of temperature and dissolved oxygen criteria to predict habitat use by lake trout (Salvelinus namaycush)","interactions":[],"lastModifiedDate":"2023-11-29T01:23:07.122972","indexId":"70037429","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Performance of temperature and dissolved oxygen criteria to predict habitat use by lake trout (Salvelinus namaycush)","docAbstract":"We compared theoretical habitat volumes, determined from traditional combinations of temperature and dissolved oxygen concentration (DO) boundaries, with in situ habitat use by acoustically tagged lake trout (Salvelinus namaycush). The widely used criteria of 8–12 °C underestimated lake trout habitat use by 68%–80%. Instead, combined temperature (<12 or 15 °C) and DO (>4 or 6 mg·L–1) criteria most closely matched lake trout habitat use, had a similar seasonal trend as the tagged fish, suggested modest reductions (5% of total lake volume) in habitat during a warmer year, and performed best when the constraints of temperature and DO were most limiting. All data were collected in a small boreal shield lake (27 ha, zmax = 21 m) at the Experimental Lakes Area in northwestern Ontario, Canada, during two contrasting periods of thermal stratification (2003: warmer and longer; 2004: cooler and shorter), providing an assessment of observed and theoretical habitat volumes over current environmental extremes.
","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/F09-129","issn":"0706652X","usgsCitation":"Plumb, J., and Blanchfield, P., 2009, Performance of temperature and dissolved oxygen criteria to predict habitat use by lake trout (Salvelinus namaycush): Canadian Journal of Fisheries and Aquatic Sciences, v. 66, no. 11, p. 2011-2023, https://doi.org/10.1139/F09-129.","productDescription":"13 p.","startPage":"2011","endPage":"2023","numberOfPages":"13","costCenters":[],"links":[{"id":245201,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -94.27310466371186,\n 50.251409577362494\n ],\n [\n -94.27310466371186,\n 47.53647767348366\n ],\n [\n -87.59341716371155,\n 47.53647767348366\n ],\n [\n -87.59341716371155,\n 50.251409577362494\n ],\n [\n -94.27310466371186,\n 50.251409577362494\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"66","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a768fe4b0c8380cd781a1","contributors":{"authors":[{"text":"Plumb, J.M.","contributorId":37870,"corporation":false,"usgs":true,"family":"Plumb","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":461025,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blanchfield, P.J.","contributorId":64025,"corporation":false,"usgs":true,"family":"Blanchfield","given":"P.J.","affiliations":[],"preferred":false,"id":461026,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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