{"pageNumber":"951","pageRowStart":"23750","pageSize":"25","recordCount":40807,"records":[{"id":70031234,"text":"70031234 - 2007 - Sensitivity of estuarine turbidity maximum to settling velocity, tidal mixing, and sediment supply","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70031234","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3129,"text":"Proceedings in Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Sensitivity of estuarine turbidity maximum to settling velocity, tidal mixing, and sediment supply","docAbstract":"Estuarine turbidity maximum, numerical modeling, settling velocity, stratification The spatial and temporal distribution of suspended material in an Estuarine Turbidity Maxima (ETM) is primarily controlled by particle settling velocity, tidal mixing, shear-stress thresholds for resuspension, and sediment supply. We vary these parameters in numerical experiments of an idealized two-dimensional (x-z) estuary to demonstrate their affects on the development and retention of particles in an ETM. Parameters varied are the settling velocity (0.01, 0.1, and 0.5 mm/s), tidal amplitude (0.4 m 12 hour tide and 0.3 to 0.6 m 14 day spring neap cycle), and sediment availability (spatial supply limited or unlimited; and temporal supply as a riverine pulse during spring vs. neap tide). Results identify that particles with a low settling velocity are advected out of the estuary and particles with a high settling velocity provide little material transport to an ETM. Particles with an intermediate settling velocity develop an ETM with the greatest amount of material retained. For an unlimited supply of sediment the ETM and limit of salt intrusion co-vary during the spring neap cycle. The ETM migrates landward of the salt intrusion during spring tides and seaward during neap tides. For limited sediment supply the ETM does not respond as an erodible pool of sediment that advects landward and seaward with the salt front. The ETM is maintained seaward of the salt intrusion and controlled by the locus of sediment convergence in the bed. For temporal variability of sediment supplied from a riverine pulse, the ETM traps more sediment if the pulse encounters the salt intrusion at neap tides than during spring tides. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings in Marine Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S1568-2692(07)80022-2","issn":"15682692","isbn":"9780444521637","usgsCitation":"Warner, J., Sherwood, C.R., and Geyer, W., 2007, Sensitivity of estuarine turbidity maximum to settling velocity, tidal mixing, and sediment supply: Proceedings in Marine Science, v. 8, p. 355-376, https://doi.org/10.1016/S1568-2692(07)80022-2.","startPage":"355","endPage":"376","numberOfPages":"22","costCenters":[],"links":[{"id":211315,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S1568-2692(07)80022-2"},{"id":238584,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8d2de4b08c986b3182b8","contributors":{"editors":[{"text":"Maa J.P.Y.Sanford L.P.Schoellhamer D.H.","contributorId":128378,"corporation":true,"usgs":false,"organization":"Maa J.P.Y.Sanford L.P.Schoellhamer D.H.","id":536659,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Warner, J.C.","contributorId":46644,"corporation":false,"usgs":true,"family":"Warner","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":430644,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sherwood, C. R.","contributorId":48235,"corporation":false,"usgs":true,"family":"Sherwood","given":"C.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430645,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Geyer, W.R.","contributorId":62355,"corporation":false,"usgs":true,"family":"Geyer","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":430646,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031245,"text":"70031245 - 2007 - A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images","interactions":[],"lastModifiedDate":"2018-02-21T15:48:00","indexId":"70031245","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images","docAbstract":"On 31 May 2003, the Landsat Enhanced Thematic Plus (ETM+) Scan Line Corrector (SLC) failed, causing the scanning pattern to exhibit wedge-shaped scan-to-scan gaps. We developed a method that uses coincident spectral data to fill the image gaps. This method uses a multi-scale segment model, derived from a previous Landsat SLC-on image (image acquired prior to the SLC failure), to guide the spectral interpolation across the gaps in SLC-off images (images acquired after the SLC failure). This paper describes the process used to generate the segment model, provides details of the gap-fill algorithm used in deriving the segment-based gap-fill product, and presents the results of the gap-fill process applied to grassland, cropland, and forest landscapes. Our results indicate this product will be useful for a wide variety of applications, including regional-scale studies, general land cover mapping (e.g. forest, urban, and grass), crop-specific mapping and monitoring, and visual assessments. Applications that need to be cautious when using pixels in the gap areas include any applications that require per-pixel accuracy, such as urban characterization or impervious surface mapping, applications that use texture to characterize landscape features, and applications that require accurate measurements of small or narrow landscape features such as roads, farmsteads, and riparian areas.","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160601034902","issn":"01431161","usgsCitation":"Maxwell, S., Schmidt, G.L., and Storey, J.C., 2007, A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images: International Journal of Remote Sensing, v. 28, no. 23, p. 5339-5356, https://doi.org/10.1080/01431160601034902.","productDescription":"18 p.","startPage":"5339","endPage":"5356","numberOfPages":"18","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238656,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211376,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160601034902"}],"volume":"28","issue":"23","noUsgsAuthors":false,"publicationDate":"2007-11-20","publicationStatus":"PW","scienceBaseUri":"5059e48be4b0c8380cd466eb","contributors":{"authors":[{"text":"Maxwell, S.K.","contributorId":36665,"corporation":false,"usgs":true,"family":"Maxwell","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":430704,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmidt, Gail L. 0000-0002-9684-8158 gschmidt@usgs.gov","orcid":"https://orcid.org/0000-0002-9684-8158","contributorId":3475,"corporation":false,"usgs":true,"family":"Schmidt","given":"Gail","email":"gschmidt@usgs.gov","middleInitial":"L.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":430705,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Storey, James C. 0000-0002-6664-7232","orcid":"https://orcid.org/0000-0002-6664-7232","contributorId":35505,"corporation":false,"usgs":true,"family":"Storey","given":"James","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430703,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031246,"text":"70031246 - 2007 - Effects of experimental egg composition on rejection by Village Weavers (Ploceus cucullatus)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70031246","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3784,"text":"Wilson Journal of Ornithology","active":true,"publicationSubtype":{"id":10}},"title":"Effects of experimental egg composition on rejection by Village Weavers (Ploceus cucullatus)","docAbstract":"We experimentally parasitized nests of the Village Weaver (Ploceus cucullatus) in Hispaniola using real and artificial eggs made from wood and modeling clay. Artificial eggs were similar in size and shape to real weaver eggs and were coated with acrylic paint and glazed. Real eggs were actual weaver eggs taken from Village Weaver nests. Experimental parasitic eggs (1) mimicked natural weaver eggs, (2) differed in color only, (3) differed in spotting only, or (4) mimicked Shiny Cowbird (Molothrus bonariensis) egg color and spotting pattern. Parasitized nests were checked after 2-6 days. Real eggs were ejected from weaver nests with increasing frequency as they became less similar to the eggs in the nest with cowbirds eggs having the highest rejection (81%). However, for artificial egg types there were no significant within-composition differences in patterns of rejection. Clay eggs were usually ejected from the nests, whereas nests containing wood eggs often ended empty, or with only the artificial egg remaining in the nest. These patterns may reflect the differential ability of weavers to recognize and remove foreign eggs of different compositions from their nests. Researchers undertaking egg-rejection experiments should use real eggs either in addition or in place of artificial eggs to assess the cost of rejection and the coevolutionary relationships between parasite and host.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wilson Journal of Ornithology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1676/06-123.1","issn":"15594491","usgsCitation":"Prather, J., Cruz, A., Weaver, P., and Wiley, J.W., 2007, Effects of experimental egg composition on rejection by Village Weavers (Ploceus cucullatus): Wilson Journal of Ornithology, v. 119, no. 4, p. 703-711, https://doi.org/10.1676/06-123.1.","startPage":"703","endPage":"711","numberOfPages":"9","costCenters":[],"links":[{"id":211377,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1676/06-123.1"},{"id":238657,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"119","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a06e5e4b0c8380cd51483","contributors":{"authors":[{"text":"Prather, J.W.","contributorId":37457,"corporation":false,"usgs":true,"family":"Prather","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":430706,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cruz, A.","contributorId":89993,"corporation":false,"usgs":true,"family":"Cruz","given":"A.","email":"","affiliations":[],"preferred":false,"id":430708,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weaver, P.F.","contributorId":96397,"corporation":false,"usgs":true,"family":"Weaver","given":"P.F.","email":"","affiliations":[],"preferred":false,"id":430709,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wiley, J. W.","contributorId":51399,"corporation":false,"usgs":false,"family":"Wiley","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":430707,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031248,"text":"70031248 - 2007 - Evaluation of abutment scour prediction equations with field data","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031248","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3647,"text":"Transportation Research Record","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of abutment scour prediction equations with field data","docAbstract":"The U.S. Geological Survey, in cooperation with FHWA, compared predicted abutment scour depths, computed with selected predictive equations, with field observations collected at 144 bridges in South Carolina and at eight bridges from the National Bridge Scour Database. Predictive equations published in the 4th edition of Evaluating Scour at Bridges (Hydraulic Engineering Circular 18) were used in this comparison, including the original Froehlich, the modified Froehlich, the Sturm, the Maryland, and the HIRE equations. The comparisons showed that most equations tended to provide conservative estimates of scour that at times were excessive (as large as 158 ft). Equations also produced underpredictions of scour, but with less frequency. Although the equations provide an important resource for evaluating abutment scour at bridges, the results of this investigation show the importance of using engineering judgment in conjunction with these equations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transportation Research Record","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3141/2025-12","issn":"03611981","isbn":"9780309104524","usgsCitation":"Benedict, S., Deshpande, N., and Aziz, N., 2007, Evaluation of abutment scour prediction equations with field data: Transportation Research Record, no. 2025, p. 118-126, https://doi.org/10.3141/2025-12.","startPage":"118","endPage":"126","numberOfPages":"9","costCenters":[],"links":[{"id":211402,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3141/2025-12"},{"id":238685,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"2025","noUsgsAuthors":false,"publicationDate":"2007-01-01","publicationStatus":"PW","scienceBaseUri":"505a0c3ae4b0c8380cd52ab0","contributors":{"authors":[{"text":"Benedict, S.T.","contributorId":97155,"corporation":false,"usgs":true,"family":"Benedict","given":"S.T.","email":"","affiliations":[],"preferred":false,"id":430720,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Deshpande, N.","contributorId":60012,"corporation":false,"usgs":true,"family":"Deshpande","given":"N.","email":"","affiliations":[],"preferred":false,"id":430718,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aziz, N.M.","contributorId":77731,"corporation":false,"usgs":true,"family":"Aziz","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":430719,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031250,"text":"70031250 - 2007 - River plume patterns and dynamics within the Southern California Bight","interactions":[],"lastModifiedDate":"2023-07-14T10:57:18.022387","indexId":"70031250","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"River plume patterns and dynamics within the Southern California Bight","docAbstract":"Stormwater river plumes are important vectors of marine contaminants and pathogens in the Southern California Bight. Here we report the results of a multi-institution investigation of the river plumes across eight major river systems of southern California. We use in situ water samples from multi-day cruises in combination with MODIS satellite remote sensing, buoy meteorological observations, drifters, and HF radar current measurements to evaluate the dispersal patterns and dynamics of the freshwater plumes. River discharge was exceptionally episodic, and the majority of storm discharge occurred in a few hours. The combined plume observing techniques revealed that plumes commonly detach from the coast and turn to the left, which is the opposite direction of Coriolis influence. Although initial offshore velocity of the buoyant plumes was ∼50 cm/s and was influenced by river discharge inertia (i.e., the direct momentum of the river flux) and buoyancy, subsequent advection of the plumes was largely observed in an alongshore direction and dominated by local winds. Due to the multiple day upwelling wind conditions that commonly follow discharge events, plumes were observed to flow from their respective river mouths to down-coast waters at rates of 20–40 km/d. Lastly, we note that suspended-sediment concentration and beam-attenuation were poorly correlated with plume salinity across and within the sampled plumes (mean r<sup>2</sup>=0.12 and 0.25, respectively), while colored dissolved organic matter (CDOM) fluorescence was well correlated (mean r<sup>2</sup>=0.56), suggesting that CDOM may serve as a good tracer of the discharged freshwater in subsequent remote sensing and monitoring efforts of plumes.","language":"English","publisher":"Elsevier","doi":"10.1016/j.csr.2007.06.015","issn":"02784343","usgsCitation":"Warrick, J., DiGiacomo, P., Weisberg, S., Nezlin, N., Mengel, M., Jones, B., Ohlmann, J., Washburn, L., Terrill, E., and Farnsworth, K., 2007, River plume patterns and dynamics within the Southern California Bight: Continental Shelf Research, v. 27, no. 19, p. 2427-2448, https://doi.org/10.1016/j.csr.2007.06.015.","productDescription":"22 p.","startPage":"2427","endPage":"2448","numberOfPages":"22","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":238687,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","volume":"27","issue":"19","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aadb5e4b0c8380cd86f63","contributors":{"authors":[{"text":"Warrick, J.A.","contributorId":53503,"corporation":false,"usgs":true,"family":"Warrick","given":"J.A.","affiliations":[],"preferred":false,"id":430729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DiGiacomo, P.M.","contributorId":39501,"corporation":false,"usgs":true,"family":"DiGiacomo","given":"P.M.","affiliations":[],"preferred":false,"id":430727,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weisberg, S.B.","contributorId":75755,"corporation":false,"usgs":true,"family":"Weisberg","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":430730,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nezlin, N.P.","contributorId":77644,"corporation":false,"usgs":true,"family":"Nezlin","given":"N.P.","affiliations":[],"preferred":false,"id":430731,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mengel, M.","contributorId":30581,"corporation":false,"usgs":true,"family":"Mengel","given":"M.","email":"","affiliations":[],"preferred":false,"id":430724,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jones, B.H.","contributorId":96810,"corporation":false,"usgs":true,"family":"Jones","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":430732,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ohlmann, J.C.","contributorId":33524,"corporation":false,"usgs":true,"family":"Ohlmann","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":430725,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Washburn, L.","contributorId":99747,"corporation":false,"usgs":true,"family":"Washburn","given":"L.","email":"","affiliations":[],"preferred":false,"id":430733,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Terrill, E.J.","contributorId":49593,"corporation":false,"usgs":true,"family":"Terrill","given":"E.J.","affiliations":[],"preferred":false,"id":430728,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Farnsworth, K.L.","contributorId":36746,"corporation":false,"usgs":true,"family":"Farnsworth","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":430726,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70031254,"text":"70031254 - 2007 - Selection of spawning sites by coho salmon in a northern California stream","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70031254","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Selection of spawning sites by coho salmon in a northern California stream","docAbstract":"We assessed the relative importance of various factors contributing to spawning site use by a population of threatened coho salmon Oncorhynchus kisutch in Freshwater Creek, California, and created a predictive model of spawning habitat selection based on logistic regression analysis. We excluded sampling sites that previous studies had established as unsuitable on the basis of depth and substrate criteria and asked why fish chose particular locations and not others in seemingly suitable habitat. We evaluated surface water velocity, depth, substrate size composition, gravel inflow rates, vertical hydraulic gradient, geomorphic channel units, hyporheic water physicochemistry, cover, and proximity to other redds not in sampling sites during the 2004-2005 spawning season. In univariate comparisons with unused sites, coho salmon selected sites with a smaller median particle diameter, a larger percentage of gravel-pebble substrate, and higher gravel inflow rates. Based on multivariate logistic regression, the probability of a site's being used for spawning was best modeled as a positive function of the gravel-pebble fraction of the substrate, location at a pool or run tail, and the presence of existing redds in close proximity to the site. This model explained 38% of the variation in the data and was a better predictor of spawning habitat use than a more traditional model based on depth, velocity, and substrate. Our results highlight the potential importance of social behavior in contributing to habitat selection by spawning salmonids. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-054.1","issn":"02755947","usgsCitation":"Mull, K., and Wilzbach, M., 2007, Selection of spawning sites by coho salmon in a northern California stream: North American Journal of Fisheries Management, v. 27, no. 4, p. 1343-1354, https://doi.org/10.1577/M06-054.1.","startPage":"1343","endPage":"1354","numberOfPages":"12","costCenters":[],"links":[{"id":238621,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211346,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-054.1"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-11-01","publicationStatus":"PW","scienceBaseUri":"505b8cd4e4b08c986b31815f","contributors":{"authors":[{"text":"Mull, K.E.","contributorId":68104,"corporation":false,"usgs":true,"family":"Mull","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":430749,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilzbach, M.A.","contributorId":48505,"corporation":false,"usgs":true,"family":"Wilzbach","given":"M.A.","affiliations":[],"preferred":false,"id":430748,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031255,"text":"70031255 - 2007 - Deep-sea scleractinian coral age and depth distributions in the northwest Atlantic for the last 225,000 years","interactions":[],"lastModifiedDate":"2023-07-14T11:09:29.905124","indexId":"70031255","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1106,"text":"Bulletin of Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Deep-sea scleractinian coral age and depth distributions in the northwest Atlantic for the last 225,000 years","docAbstract":"Deep-sea corals have grown for over 200,000 yrs on the New England Seamounts in the northwest Atlantic, and this paper describes their distribution both with respect to depth and time. Many thousands of fossil scleractinian corals were collected on a series of cruises from 2003-2005; by contrast, live ones were scarce. On these seamounts, the depth distribution of fossil Desmophyllum dianthus (Esper, 1794) is markedly different to that of the colonial scleractinian corals, extending 750 m deeper in the water column to a distinct cut-off at 2500 m. This cut-off is likely to be controlled by the maximum depth of a notch-shaped feature in the seamount morphology. The ages of D. dianthus corals as determined by U-series measurements range from modern to older than 200,000 yrs. The age distribution is not constant over time, and most corals have ages from the last glacial period. Within the glacial period, increases in coral population density at Muir and Manning Seamounts coincided with times at which large-scale ocean circulation changes have been documented in the deep North Atlantic. Ocean circulation changes have an effect on coral distributions, but the cause of the link is not known. ?? 2007 Rosenstiel School of Marine and Atmospheric Science of the University of Miami.","language":"English","publisher":"University of Miami","issn":"00074977","usgsCitation":"Robinson, L., Adkins, J., Scheirer, D., Fernandez, D.P., Gagnon, A., and Waller, R., 2007, Deep-sea scleractinian coral age and depth distributions in the northwest Atlantic for the last 225,000 years: Bulletin of Marine Science, v. 81, no. 3, p. 371-391.","productDescription":"21 p.","startPage":"371","endPage":"391","numberOfPages":"21","costCenters":[],"links":[{"id":238622,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":418932,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.ingentaconnect.com/content/umrsmas/bullmar/2007/00000081/00000003/art00007"}],"volume":"81","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe2fe4b0c8380cd4eb9c","contributors":{"authors":[{"text":"Robinson, L.F.","contributorId":75256,"corporation":false,"usgs":true,"family":"Robinson","given":"L.F.","email":"","affiliations":[],"preferred":false,"id":430754,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adkins, J.F.","contributorId":90857,"corporation":false,"usgs":true,"family":"Adkins","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":430755,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scheirer, D.S.","contributorId":49165,"corporation":false,"usgs":true,"family":"Scheirer","given":"D.S.","email":"","affiliations":[],"preferred":false,"id":430752,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fernandez, D. P.","contributorId":45108,"corporation":false,"usgs":false,"family":"Fernandez","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":430751,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gagnon, A.","contributorId":15004,"corporation":false,"usgs":true,"family":"Gagnon","given":"A.","email":"","affiliations":[],"preferred":false,"id":430750,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Waller, R.G.","contributorId":70591,"corporation":false,"usgs":true,"family":"Waller","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":430753,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031260,"text":"70031260 - 2007 - Constancy of the relation between floc size and density in San Francisco Bay","interactions":[],"lastModifiedDate":"2023-10-18T11:19:52.084866","indexId":"70031260","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3129,"text":"Proceedings in Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Constancy of the relation between floc size and density in San Francisco Bay","docAbstract":"<p id=\"para10\"><span>The size and density of fine-sediment aggregates, or flocs, govern their transport and depositional properties. While the mass and volume concentrations of flocs can be measured directly or by optical methods, they must be determined simultaneously to gain an accurate density measurement. Results are presented from a&nbsp;tidal cycle&nbsp;study in San Francisco Bay, where mass concentration was determined directly, and volume concentration was measured in 32 logarithmically spaced size bins by laser-diffraction methods. The relation between floc size and density is investigated assuming a constant primary particle size and fractal floc dimension. This relation is validated with measurements from several sites throughout San Francisco Bay. The constancy of this relation implies a uniform primary particle size throughout the Bay, as well as uniform aggregation/disaggregation mechanisms (which modify fractal dimension). The exception to the relation is identified during near-bed measurements, when adverted flocs mix with recently resuspended flocs from the bed, which typically have a higher fractal dimension than suspended flocs. The constant relation for suspended flocs simplifies monitoring and numerical modeling of&nbsp;suspended sediment&nbsp;in San Francisco Bay.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S1568-2692(07)80007-6","issn":"15682692","isbn":"9780444521637","usgsCitation":"Ganju, N., Schoellhamer, D., Murrell, M., Gartner, J.W., and Wright, S., 2007, Constancy of the relation between floc size and density in San Francisco Bay: Proceedings in Marine Science, v. 8, p. 75-91, https://doi.org/10.1016/S1568-2692(07)80007-6.","productDescription":"17 p.","startPage":"75","endPage":"91","numberOfPages":"17","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true}],"links":[{"id":238652,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.2061973854705,\n              38.44226344455413\n            ],\n            [\n              -123.2061973854705,\n              37.14003383006316\n            ],\n            [\n              -121.39345324484535,\n              37.14003383006316\n            ],\n            [\n              -121.39345324484535,\n              38.44226344455413\n            ],\n            [\n              -123.2061973854705,\n              38.44226344455413\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa02e4b0c8380cd4d890","contributors":{"authors":[{"text":"Ganju, N. K. 0000-0002-1096-0465","orcid":"https://orcid.org/0000-0002-1096-0465","contributorId":64782,"corporation":false,"usgs":true,"family":"Ganju","given":"N. K.","affiliations":[],"preferred":false,"id":430774,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoellhamer, D. H. 0000-0001-9488-7340","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":85624,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"D. H.","affiliations":[],"preferred":false,"id":430776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Murrell, M.C.","contributorId":106308,"corporation":false,"usgs":true,"family":"Murrell","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":430778,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gartner, J. W.","contributorId":81903,"corporation":false,"usgs":false,"family":"Gartner","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":430775,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wright, S.A.","contributorId":90080,"corporation":false,"usgs":true,"family":"Wright","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":430777,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032055,"text":"70032055 - 2007 - Sensitivity of high-frequency Rayleigh-wave data revisited","interactions":[],"lastModifiedDate":"2012-03-12T17:21:28","indexId":"70032055","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Sensitivity of high-frequency Rayleigh-wave data revisited","docAbstract":"Rayleigh-wave phase velocity of a layered earth model is a function of frequency and four groups of earth properties: P-wave velocity, S-wave velocity (Vs), density, and thickness of layers. Analysis of the Jacobian matrix (or the difference method) provides a measure of dispersion curve sensitivity to earth properties. Vs is the dominant influence for the fundamental mode (Xia et al., 1999) and higher modes (Xia et al., 2003) of dispersion curves in a high frequency range (>2 Hz) followed by layer thickness. These characteristics are the foundation of determining S-wave velocities by inversion of Rayleigh-wave data. More applications of surface-wave techniques show an anomalous velocity layer such as a high-velocity layer (HVL) or a low-velocity layer (LVL) commonly exists in near-surface materials. Spatial location (depth) of an anomalous layer is usually the most important information that surface-wave techniques are asked to provide. Understanding and correctly defining the sensitivity of high-frequency Rayleigh-wave data due to depth of an anomalous velocity layer are crucial in applying surface-wave techniques to obtain a Vs profile and/or determine the depth of an anomalous layer. Because depth is not a direct earth property of a layered model, changes in depth will result in changes in other properties. Modeling results show that sensitivity at a given depth calculated by the difference method is dependent on the Vs difference (contrast) between an anomalous layer and surrounding layers. The larger the contrast is, the higher the sensitivity due to depth of the layer. Therefore, the Vs contrast is a dominant contributor to sensitivity of Rayleigh-wave data due to depth of an anomalous layer. Modeling results also suggest that the most sensitive depth for an HVL is at about the middle of the depth to the half-space, but for an LVL it is near the ground surface. ?? 2007 Society of Exploration Geophysicists.","largerWorkTitle":"SEG Technical Program Expanded Abstracts","language":"English","doi":"10.1190/1.2792614","issn":"10523812","usgsCitation":"Xia, J., Miller, R., and Ivanov, J., 2007, Sensitivity of high-frequency Rayleigh-wave data revisited, <i>in</i> SEG Technical Program Expanded Abstracts, v. 26, no. 1, p. 1142-1146, https://doi.org/10.1190/1.2792614.","startPage":"1142","endPage":"1146","numberOfPages":"5","costCenters":[],"links":[{"id":214781,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/1.2792614"},{"id":242532,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-09-14","publicationStatus":"PW","scienceBaseUri":"505b8d30e4b08c986b3182c1","contributors":{"authors":[{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":434337,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":434338,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ivanov, J.","contributorId":107068,"corporation":false,"usgs":true,"family":"Ivanov","given":"J.","email":"","affiliations":[],"preferred":false,"id":434339,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031264,"text":"70031264 - 2007 - Near-infrared spectral mapping of Titan's mountains and channels","interactions":[],"lastModifiedDate":"2018-12-07T15:25:15","indexId":"70031264","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Near-infrared spectral mapping of Titan's mountains and channels","docAbstract":"<p>We investigate the spectral reflectance properties of channels and mountain ranges on Titan using data from Cassini's Visual and Infrared Mapping Spectrometer (VIMS) obtained during the T9 encounter (26 December 2005). We identify the location of channels and mountains using synthetic aperture radar maps obtained from Cassini's RADAR instrument during the T13 (30 April 2006) flyby. Channels are evident even in VIMS imaging with spatial resolution coarser than the channel size. The channels share spectral characteristics with Titan's dark blue terrain (e.g., the Huygens landing site) that is consistent with an enhancement in water ice content relative to the rest of Titan. We use this fact to measure widths of ???1 km for the largest channels. Comparison of the data sets shows that in our study area within the equatorial bright spectral unit east of Xanadu, mountains are darker and bluer than surrounding smooth terrain. These results are consistent with the equatorial bright terrain possessing a veneer of material that is thinner in the regions where there are mountains and streambeds that have likely undergone more recent and extensive erosion. We suggest a model for the geographic relationship of the dark blue, dark brown, and equatorial bright spectral units based on our findings.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","publisherLocation":"Washington, D.C.","doi":"10.1029/2007JE002932","issn":"01480227","usgsCitation":"Barnes, J.W., Radebaugh, J., Brown, R.H., Wall, S., Soderblom, L.A., Lunine, J.I., Burr, D.M., Sotin, C., Le Mouelic, S., Rodriguez, S., Buratti, B.J., Clark, R.N., Baines, K.H., Jaumann, R., Nicholson, P.D., Kirk, R.L., Lopes, R., Lorenz, R.D., Mitchell, K., and Wood, C.A., 2007, Near-infrared spectral mapping of Titan's mountains and channels: Journal of Geophysical Research E: Planets, v. 112, no. E11, 13 p., https://doi.org/10.1029/2007JE002932.","productDescription":"13 p.","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":477229,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://u-paris.hal.science/hal-03657632","text":"External Repository"},{"id":239811,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212340,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007JE002932"}],"otherGeospatial":"Titan","volume":"112","issue":"E11","noUsgsAuthors":false,"publicationDate":"2007-11-20","publicationStatus":"PW","scienceBaseUri":"505a63fde4b0c8380cd727e8","contributors":{"authors":[{"text":"Barnes, Jason W.","contributorId":147251,"corporation":false,"usgs":false,"family":"Barnes","given":"Jason","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":430802,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Radebaugh, Jani","contributorId":101792,"corporation":false,"usgs":true,"family":"Radebaugh","given":"Jani","email":"","affiliations":[],"preferred":false,"id":430805,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Robert H.","contributorId":147246,"corporation":false,"usgs":false,"family":"Brown","given":"Robert","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":430804,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wall, Steve","contributorId":211191,"corporation":false,"usgs":false,"family":"Wall","given":"Steve","email":"","affiliations":[],"preferred":false,"id":430819,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Soderblom, Laurence A. 0000-0002-0917-853X lsoderblom@usgs.gov","orcid":"https://orcid.org/0000-0002-0917-853X","contributorId":2721,"corporation":false,"usgs":true,"family":"Soderblom","given":"Laurence","email":"lsoderblom@usgs.gov","middleInitial":"A.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":430820,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lunine, Jonathan I.","contributorId":82447,"corporation":false,"usgs":true,"family":"Lunine","given":"Jonathan","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":430808,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Burr, Devon M.","contributorId":21853,"corporation":false,"usgs":true,"family":"Burr","given":"Devon","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":430803,"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":430809,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Le Mouelic, Stephane","contributorId":147254,"corporation":false,"usgs":false,"family":"Le Mouelic","given":"Stephane","affiliations":[],"preferred":false,"id":430816,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Rodriguez, Sebastien","contributorId":211192,"corporation":false,"usgs":false,"family":"Rodriguez","given":"Sebastien","email":"","affiliations":[],"preferred":false,"id":430810,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Buratti, Bonnie J.","contributorId":152192,"corporation":false,"usgs":false,"family":"Buratti","given":"Bonnie","email":"","middleInitial":"J.","affiliations":[{"id":18876,"text":"California Institute of Technology, Jet Propulsion Laboratory","active":true,"usgs":false}],"preferred":false,"id":430813,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Clark, Roger N. 0000-0002-7021-1220 rclark@usgs.gov","orcid":"https://orcid.org/0000-0002-7021-1220","contributorId":515,"corporation":false,"usgs":true,"family":"Clark","given":"Roger","email":"rclark@usgs.gov","middleInitial":"N.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":430818,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Baines, Kevin H.","contributorId":193922,"corporation":false,"usgs":false,"family":"Baines","given":"Kevin","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":430807,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Jaumann, Ralf","contributorId":147249,"corporation":false,"usgs":false,"family":"Jaumann","given":"Ralf","email":"","affiliations":[],"preferred":false,"id":430814,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Nicholson, Philip D.","contributorId":193925,"corporation":false,"usgs":false,"family":"Nicholson","given":"Philip","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":430811,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Kirk, Randolph L. 0000-0003-0842-9226 rkirk@usgs.gov","orcid":"https://orcid.org/0000-0003-0842-9226","contributorId":2765,"corporation":false,"usgs":true,"family":"Kirk","given":"Randolph","email":"rkirk@usgs.gov","middleInitial":"L.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":430817,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Lopes, Rosaly","contributorId":50280,"corporation":false,"usgs":true,"family":"Lopes","given":"Rosaly","affiliations":[],"preferred":false,"id":430812,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Lorenz, Ralph D.","contributorId":56360,"corporation":false,"usgs":false,"family":"Lorenz","given":"Ralph","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":430815,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Mitchell, Ken","contributorId":8211,"corporation":false,"usgs":true,"family":"Mitchell","given":"Ken","email":"","affiliations":[],"preferred":false,"id":430801,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Wood, Charles A.","contributorId":27599,"corporation":false,"usgs":true,"family":"Wood","given":"Charles","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430806,"contributorType":{"id":1,"text":"Authors"},"rank":20}]}}
,{"id":70032028,"text":"70032028 - 2007 - Bora event variability and the role of air-sea feedback","interactions":[],"lastModifiedDate":"2012-03-12T17:21:27","indexId":"70032028","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2315,"text":"Journal of Geophysical Research C: Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Bora event variability and the role of air-sea feedback","docAbstract":"A two-way interacting high resolution numerical simulation of the Adriatic Sea using the Navy Coastal Ocean Model (NCOM) and Coupled Ocean/ Atmosphere Mesoscale Prediction System (COAMPS??) was conducted to improve forecast momentum and heat flux fields, and to evaluate surface flux field differences for two consecutive bora events during February 2003. (COAMPS?? is a registered trademark of the Naval Research Laboratory.) The strength, mean positions and extensions of the bora jets, and the atmospheric conditions driving them varied considerably between the two events. Bora 1 had 62% stronger heat flux and 51% larger momentum flux than bora 2. The latter displayed much greater diurnal variability characterized by inertial oscillations and the early morning strengthening of a west Adriatic barrier jet, beneath which a stronger west Adriatic ocean current developed. Elsewhere, surface ocean current differences between the two events were directly related to differences in wind stress curl generated by the position and strength of the individual bora jets. The mean heat flux bias was reduced by 72%, and heat flux RMSE reduced by 30% on average at four instrumented over-water sites in the two-way coupled simulation relative to the uncoupled control. Largest reductions in wind stress were found in the bora jets, while the biggest reductions in heat flux were found along the north and west coasts of the Adriatic. In bora 2, SST gradients impacted the wind stress curl along the north and west coasts, and in bora 1 wind stress curl was sensitive to the Istrian front position and strength. The two-way coupled simulation produced diminished surface current speeds of ???12% over the northern Adriatic during both bora compared with a one-way coupled simulation. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research C: Oceans","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JC003726","issn":"01480227","usgsCitation":"Pullen, J., Doyle, J., Haack, T., Dorman, C., Signell, R.P., and Lee, C., 2007, Bora event variability and the role of air-sea feedback: Journal of Geophysical Research C: Oceans, v. 112, no. 3, https://doi.org/10.1029/2006JC003726.","costCenters":[],"links":[{"id":477170,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/3671","text":"External Repository"},{"id":242629,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214873,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JC003726"}],"volume":"112","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-02-13","publicationStatus":"PW","scienceBaseUri":"5059f20fe4b0c8380cd4afb1","contributors":{"authors":[{"text":"Pullen, J.","contributorId":34339,"corporation":false,"usgs":true,"family":"Pullen","given":"J.","email":"","affiliations":[],"preferred":false,"id":434215,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doyle, J.D.","contributorId":67917,"corporation":false,"usgs":true,"family":"Doyle","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":434217,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haack, T.","contributorId":89366,"corporation":false,"usgs":true,"family":"Haack","given":"T.","email":"","affiliations":[],"preferred":false,"id":434219,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dorman, C.","contributorId":25781,"corporation":false,"usgs":true,"family":"Dorman","given":"C.","email":"","affiliations":[],"preferred":false,"id":434214,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Signell, R. P.","contributorId":89147,"corporation":false,"usgs":true,"family":"Signell","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":434218,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, C.M.","contributorId":40031,"corporation":false,"usgs":true,"family":"Lee","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":434216,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031274,"text":"70031274 - 2007 - Modeling dune response using measured and equilibrium bathymetric profiles","interactions":[],"lastModifiedDate":"2014-08-22T15:00:16","indexId":"70031274","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Modeling dune response using measured and equilibrium bathymetric profiles","docAbstract":"<p>Coastal engineers typically use numerical models such as SBEACH to predict coastal change due to extreme storms. SBEACH model inputs include pre-storm profiles, wave heights and periods, and water levels. This study focuses on the sensitivity of SBEACH to the details of pre-storm bathymetry. The SBEACH model is tested with two initial conditions for bathymetry, including (1) measured bathymetry from lidar, and (2) calculated equilibrium profiles. Results show that longshore variability in the predicted erosion signal is greater over measured bathymetric profiles, due to longshore variations in initial surf zone bathymetry. Additionally, patterns in predicted erosion can be partially explained by the configuration of the inner surf zone from the shoreline to the trough, with surf zone slope accounting for 67% of the variability in predicted erosion volumes.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)69","isbn":"0784409269; 9780784409268","usgsCitation":"Fauver, L.A., Thompson, D.M., and Sallenger, A., 2007, Modeling dune response using measured and equilibrium bathymetric profiles, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 897-910, https://doi.org/10.1061/40926(239)69.","productDescription":"14 p.","startPage":"897","endPage":"910","numberOfPages":"14","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212459,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)69"},{"id":239949,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a5bf2e4b0c8380cd6f909","contributors":{"authors":[{"text":"Fauver, Laura A.","contributorId":105384,"corporation":false,"usgs":true,"family":"Fauver","given":"Laura","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430857,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, David M. 0000-0002-7103-5740 dthompson@usgs.gov","orcid":"https://orcid.org/0000-0002-7103-5740","contributorId":3502,"corporation":false,"usgs":true,"family":"Thompson","given":"David","email":"dthompson@usgs.gov","middleInitial":"M.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":430855,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sallenger, Asbury H. Jr.","contributorId":27458,"corporation":false,"usgs":true,"family":"Sallenger","given":"Asbury H.","suffix":"Jr.","affiliations":[],"preferred":false,"id":430856,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032024,"text":"70032024 - 2007 - Scaling local species-habitat relations to the larger landscape with a hierarchical spatial count model","interactions":[],"lastModifiedDate":"2012-03-12T17:21:28","indexId":"70032024","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Scaling local species-habitat relations to the larger landscape with a hierarchical spatial count model","docAbstract":"Much of what is known about avian species-habitat relations has been derived from studies of birds at local scales. It is entirely unclear whether the relations observed at these scales translate to the larger landscape in a predictable linear fashion. We derived habitat models and mapped predicted abundances for three forest bird species of eastern North America using bird counts, environmental variables, and hierarchical models applied at three spatial scales. Our purpose was to understand habitat associations at multiple spatial scales and create predictive abundance maps for purposes of conservation planning at a landscape scale given the constraint that the variables used in this exercise were derived from local-level studies. Our models indicated a substantial influence of landscape context for all species, many of which were counter to reported associations at finer spatial extents. We found land cover composition provided the greatest contribution to the relative explained variance in counts for all three species; spatial structure was second in importance. No single spatial scale dominated any model, indicating that these species are responding to factors at multiple spatial scales. For purposes of conservation planning, areas of predicted high abundance should be investigated to evaluate the conservation potential of the landscape in their general vicinity. In addition, the models and spatial patterns of abundance among species suggest locations where conservation actions may benefit more than one species. ?? 2006 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Landscape Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10980-006-9005-2","issn":"09212973","usgsCitation":"Thogmartin, W., and Knutson, M.G., 2007, Scaling local species-habitat relations to the larger landscape with a hierarchical spatial count model: Landscape Ecology, v. 22, no. 1, p. 61-75, https://doi.org/10.1007/s10980-006-9005-2.","startPage":"61","endPage":"75","numberOfPages":"15","costCenters":[],"links":[{"id":214813,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-006-9005-2"},{"id":242565,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-06-14","publicationStatus":"PW","scienceBaseUri":"505b8716e4b08c986b3162e3","contributors":{"authors":[{"text":"Thogmartin, W.E. 0000-0002-2384-4279","orcid":"https://orcid.org/0000-0002-2384-4279","contributorId":26392,"corporation":false,"usgs":true,"family":"Thogmartin","given":"W.E.","affiliations":[],"preferred":false,"id":434201,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knutson, M. G.","contributorId":55375,"corporation":false,"usgs":false,"family":"Knutson","given":"M.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":434202,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031277,"text":"70031277 - 2007 - Dissolved organic carbon in Alaskan boreal forest: Sources, chemical characteristics, and biodegradability","interactions":[],"lastModifiedDate":"2018-10-17T09:45:54","indexId":"70031277","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Dissolved organic carbon in Alaskan boreal forest: Sources, chemical characteristics, and biodegradability","docAbstract":"<p>The fate of terrestrially-derived dissolved organic carbon (DOC) is important to carbon (C) cycling in both terrestrial and aquatic environments, and recent evidence suggests that climate warming is influencing DOC dynamics in northern ecosystems. To understand what determines the fate of terrestrial DOC, it is essential to quantify the chemical nature and potential biodegradability of this DOC. We examined DOC chemical characteristics and biodegradability collected from soil pore waters and dominant vegetation species in four boreal black spruce forest sites in Alaska spanning a range of hydrologic regimes and permafrost extents (Well Drained, Moderately Well Drained, Poorly Drained, and Thermokarst Wetlands). DOC chemistry was characterized using fractionation, UV-Vis absorbance, and fluorescence measurements. Potential biodegradability was assessed by incubating the samples and measuring CO2 production over 1 month. Soil pore water DOC from all sites was dominated by hydrophobic acids and was highly aromatic, whereas the chemical composition of vegetation leachate DOC varied significantly with species. There was no seasonal variability in soil pore water DOC chemical characteristics or biodegradability; however, DOC collected from the Poorly Drained site was significantly less biodegradable than DOC from the other three sites (6% loss vs. 13-15% loss). The biodegradability of vegetation-derived DOC ranged from 10 to 90% loss, and was strongly correlated with hydrophilic DOC content. Vegetation such as Sphagnum moss and feathermosses yielded DOC that was quickly metabolized and respired. In contrast, the DOC leached from vegetation such as black spruce was moderately recalcitrant. Changes in DOC chemical characteristics that occurred during microbial metabolism of DOC were quantified using fractionation and fluorescence. The chemical characteristics and biodegradability of DOC in soil pore waters were most similar to the moderately recalcitrant vegetation leachates, and to the microbially altered DOC from all vegetation leachates.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1007/s10021-007-9101-4","issn":"14329840","usgsCitation":"Wickland, K.P., Neff, J.C., and Aiken, G.R., 2007, Dissolved organic carbon in Alaskan boreal forest: Sources, chemical characteristics, and biodegradability: Ecosystems, v. 10, no. 8, p. 1323-1340, https://doi.org/10.1007/s10021-007-9101-4.","productDescription":"18 p.","startPage":"1323","endPage":"1340","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239983,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212492,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10021-007-9101-4"}],"country":"United States","state":"Alaska","volume":"10","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-11-13","publicationStatus":"PW","scienceBaseUri":"505a0239e4b0c8380cd4ff5b","contributors":{"authors":[{"text":"Wickland, Kimberly P. 0000-0002-6400-0590 kpwick@usgs.gov","orcid":"https://orcid.org/0000-0002-6400-0590","contributorId":1835,"corporation":false,"usgs":true,"family":"Wickland","given":"Kimberly","email":"kpwick@usgs.gov","middleInitial":"P.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":430864,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Neff, Jason C.","contributorId":34813,"corporation":false,"usgs":true,"family":"Neff","given":"Jason","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430866,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aiken, George R. 0000-0001-8454-0984 graiken@usgs.gov","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":1322,"corporation":false,"usgs":true,"family":"Aiken","given":"George","email":"graiken@usgs.gov","middleInitial":"R.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":430865,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031439,"text":"70031439 - 2007 - Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA","interactions":[],"lastModifiedDate":"2017-03-03T13:53:19","indexId":"70031439","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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}},"title":"Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA","docAbstract":"<p>Geochemical tracer data (i.e., <sup>222</sup>Rn and four naturally occurring Ra isotopes), electromagnetic (EM) seepage meter results, and high-resolution, stationary electrical resistivity images were used to examine the bi-directional (i.e., submarine groundwater discharge and recharge) exchange of a coastal aquifer with seawater. Our study site for these experiments was Lynch Cove, the terminus of Hood Canal, WA, where fjord-like conditions dramatically limit water column circulation that can lead to recurring summer-time hypoxic events. In such a system a precise nutrient budget may be particularly sensitive to groundwater-derived nutrient loading. Shore-perpendicular time-series subsurface resistivity profiles show clear, decimeter-scale tidal modulation of the coastal aquifer in response to large, regional hydraulic gradients, hydrologically transmissive glacial terrain, and large (4-5 m) tidal amplitudes. A 5-day <sup>222</sup>Rn time-series shows a strong inverse covariance between <sup>222</sup>Rn activities (0.5&minus;29 dpm L<sup>-1</sup>) and water level fluctuations, and provides compelling evidence for tidally modulated exchange of groundwater across the sediment/water interface. Mean Rn-derived submarine groundwater discharge (SGD) rates of 85 &plusmn; 84 cm d<sup>-1</sup> agree closely in the timing and magnitude with EM seepage meter results that showed discharge during low tide and recharge during high tide events. To evaluate the importance of fresh versus saline SGD, Rn-derived SGD rates (as a proxy of total SGD) were compared to excess 226Ra-derived SGD rates (as a proxy for the saline contribution of SGD). The calculated SGD rates, which include a significant (&gt;80%) component of recycled seawater, are used to estimate associated nutrient (NH<sup>4+</sup>, Si, PO<sub>4</sub><sup>3-</sup>, NO<sub>3</sub> + NO<sub>2</sub>, TDN) loads to Lynch Cove. The dissolved inorganic nitrogen (DIN = NH<sub>4</sub> + NO<sub>2</sub> + NO<sub>3</sub>) SGD loading estimate of 5.9 &times; 10<sup>4</sup> mol d<sup>-1</sup> is 1&minus;2 orders of magnitude larger than similar estimates derived from atmospheric deposition and surface water runoff, respectively.</p>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070881a","issn":"0013936X","usgsCitation":"Swarzenski, P., Simonds, F., Paulson, A., Kruse, S., and Reich, C., 2007, Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch Cove, Hood Canal, WA: Environmental Science & Technology, v. 41, no. 20, p. 7022-7029, https://doi.org/10.1021/es070881a.","productDescription":"8 p.","startPage":"7022","endPage":"7029","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":239757,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Hood Canal, Lynch Cove","volume":"41","issue":"20","noUsgsAuthors":false,"publicationDate":"2007-09-19","publicationStatus":"PW","scienceBaseUri":"505a15d0e4b0c8380cd54f58","contributors":{"authors":[{"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":431505,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simonds, F. W.","contributorId":54616,"corporation":false,"usgs":true,"family":"Simonds","given":"F. W.","affiliations":[],"preferred":false,"id":431508,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paulson, A.J. apaulson@usgs.gov","contributorId":89617,"corporation":false,"usgs":true,"family":"Paulson","given":"A.J.","email":"apaulson@usgs.gov","affiliations":[],"preferred":false,"id":431509,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kruse, S.","contributorId":33103,"corporation":false,"usgs":true,"family":"Kruse","given":"S.","email":"","affiliations":[],"preferred":false,"id":431506,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reich, C.","contributorId":41787,"corporation":false,"usgs":true,"family":"Reich","given":"C.","email":"","affiliations":[],"preferred":false,"id":431507,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031441,"text":"70031441 - 2007 - Effects of two sediment types on the fluorescence yield of two Hawaiian scleractinian corals","interactions":[],"lastModifiedDate":"2023-07-25T11:05:23.988687","indexId":"70031441","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2664,"text":"Marine Environmental Research","active":true,"publicationSubtype":{"id":10}},"title":"Effects of two sediment types on the fluorescence yield of two Hawaiian scleractinian corals","docAbstract":"<p>This study used non-invasive pulse-amplitude modulated (PAM) fluorometry to measure the maximum fluorescence yield (Fv/Fm) of two Hawaiian scleractinian coral species exposed to short-term sedimentation stress. Beach sand or harbor mud was applied to coral fragments in a flow-through aquarium system for 0-45 h, and changes in Fv/Fm were measured as a function of sediment type and length of exposure. Corals were monitored for up to 90 h to document recovery after sediment removal. Sediment deposition significantly decreased Fv/Fm in both species and was a function of sediment type and time. Corals that received sediment for 30 h or more had the greatest reduction in yield and exhibited little recovery over the course of the experiment. Harbor mud caused a greater reduction in Porites lobata yield than beach sand, whereas both sediment types had equally deleterious effects on Montipora capitata. Colony morphology and sediment type were important factors in determining yield reduction-P. lobata minimized damage from coarse sand grains by passive sediment rejection or accumulation in depressions in the skeleton, and fluorescence yield decreased most in corals exposed to sticky harbor mud or in colonies with flattened morphologies. Species-specific differences could not be tested due to differences in colony morphology and surface area. .</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.marenvres.2007.04.001","issn":"01411136","usgsCitation":"Piniak, G., 2007, Effects of two sediment types on the fluorescence yield of two Hawaiian scleractinian corals: Marine Environmental Research, v. 64, no. 4, p. 456-468, https://doi.org/10.1016/j.marenvres.2007.04.001.","productDescription":"13 p.","startPage":"456","endPage":"468","numberOfPages":"13","costCenters":[],"links":[{"id":477081,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hal.science/hal-00562977","text":"External Repository"},{"id":239790,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"64","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0818e4b0c8380cd5198a","contributors":{"authors":[{"text":"Piniak, G.A.","contributorId":35512,"corporation":false,"usgs":true,"family":"Piniak","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":431512,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031442,"text":"70031442 - 2007 - Near-fault peak ground velocity from earthquake and laboratory data","interactions":[],"lastModifiedDate":"2023-07-24T11:18:44.358195","indexId":"70031442","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Near-fault peak ground velocity from earthquake and laboratory data","docAbstract":"We test the hypothesis that peak ground velocity (PGV) has an upper bound independent of earthquake magnitude and that this bound is controlled primarily by the strength of the seismogenic crust. The highest PGVs, ranging up to several meters per second, have been measured at sites within a few kilometers of the causative faults. Because the database for near-fault PGV is small, we use earthquake slip models, laboratory experiments, and evidence from a mining-induced earthquake to investigate the factors influencing near-fault PGV and the nature of its scaling. For each earthquake slip model we have calculated the peak slip rates for all subfaults and then chosen the maximum of these rates as an estimate of twice the largest near-fault PGV. Nine slip models for eight earthquakes, with magnitudes ranging from 6.5 to 7.6, yielded maximum peak slip rates ranging from 2.3 to 12 m/sec with a median of 5.9 m/sec. By making several adjustments, PGVs for small earthquakes can be simulated from peak slip rates measured during laboratory stick-slip experiments. First, we adjust the PGV for differences in the state of stress (i.e., the difference between the laboratory loading stresses and those appropriate for faults at seismogenic depths). To do this, we multiply both the slip and the peak slip rate by the ratio of the effective normal stresses acting on fault planes measured at 6.8 km depth at the KTB site, Germany (deepest available in situ stress measurements), to those acting on the laboratory faults. We also adjust the seismic moment by replacing the laboratory fault with a buried circular shear crack whose radius is chosen to match the experimental unloading stiffness. An additional, less important adjustment is needed for experiments run in triaxial loading conditions. With these adjustments, peak slip rates for 10 stick-slip events, with scaled moment magnitudes from -2.9 to 1.0, range from 3.3 to 10.3 m/sec, with a median of 5.4 m/sec. Both the earthquake and laboratory results are consistent with typical maximum peak slip rates averaging between 5 and 6 m/sec or corresponding maximum near-fault PGVs between 2.5 and 3 m/sec at seismogenic depths, independent of magnitude. Our ability to replicate maximum slip rates in the fault zones of earthquakes by adjusting the corresponding laboratory rates using the ratio of effective normal stresses acting on the fault planes suggests that the strength of the seismogenic crust is the important factor limiting the near-fault PGV.","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120060268","issn":"00371106","usgsCitation":"McGarr, A., and Fletcher, J.B., 2007, Near-fault peak ground velocity from earthquake and laboratory data: Bulletin of the Seismological Society of America, v. 97, no. 5, p. 1502-1510, https://doi.org/10.1785/0120060268.","productDescription":"9 p.","startPage":"1502","endPage":"1510","numberOfPages":"9","costCenters":[],"links":[{"id":239821,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a63dce4b0c8380cd7273d","contributors":{"authors":[{"text":"McGarr, Art 0000-0001-9769-4093","orcid":"https://orcid.org/0000-0001-9769-4093","contributorId":43491,"corporation":false,"usgs":true,"family":"McGarr","given":"Art","affiliations":[],"preferred":false,"id":431514,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fletcher, Joe B.","contributorId":8850,"corporation":false,"usgs":true,"family":"Fletcher","given":"Joe","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":431513,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031444,"text":"70031444 - 2007 - Transport and degradation of chlorofluorocarbons (CFCs) in the pyritic Rabis Creek aquifer, Denmark","interactions":[],"lastModifiedDate":"2018-04-03T11:17:44","indexId":"70031444","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Transport and degradation of chlorofluorocarbons (CFCs) in the pyritic Rabis Creek aquifer, Denmark","docAbstract":"<p><span>Vertical profiles of the chlorofluorocarbons CFC‐11, CFC‐12, and CFC‐113 penetrating aerobic and anaerobic parts of a shallow sandy aquifer show that the CFC gases are degraded in the &lt;1 m thick transition zone from aerobic to anaerobic groundwater in a pyritic sand aquifer at Rabis Creek, Denmark. Two‐dimensional solute transport simulations with either zero‐order or first‐order degradation in the anaerobic zone corroborate this interpretation. The transport model was previously calibrated against detailed tritium profiles in the same wells. First‐order degradation is found to best match the observed CFC profiles yielding an approximate half‐life of a few months for CFC‐11. Degradation is not as clearly recognized for CFC‐12 and CFC‐113, but it may occur with rates corresponding to a half‐life of a few years or more. Data indicate a geochemical control of the CFC concentration gradient at the redox front and that denitrification and denitrifiers are not of major importance for the observed CFC degradation. The responsible mechanism behind the observed degradation is not known but we suggest that reductive dehalogenation by surface‐bound Fe(II) on pyrite possibly enhanced by the presence of Fe(III)‐bearing weathering products (green rust) may be a plausible mechanism. The observed data and the performed simulations confirm the potential application of the CFC gases as age‐dating tools in the aerobic part of the investigated aquifer, but also that CFC data must be analyzed carefully before it is used as a dating tool in reducing aquifers because degradation may have occurred. The use of multiple or alternative tracers should be considered in anaerobic environments.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR005854","usgsCitation":"Hinsby, K., Højberg, A., Engesgaard, P., Jensen, K., Larsen, F., Plummer, N., and Busenberg, E., 2007, Transport and degradation of chlorofluorocarbons (CFCs) in the pyritic Rabis Creek aquifer, Denmark: Water Resources Research, v. 43, no. 10, Article W10423; 15 p., https://doi.org/10.1029/2006WR005854.","productDescription":"Article W10423; 15 p.","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":487015,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr005854","text":"Publisher Index Page"},{"id":239857,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Denmark","otherGeospatial":"Rabis Creek aquifer","volume":"43","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-10-20","publicationStatus":"PW","scienceBaseUri":"505bb73ae4b08c986b32711e","contributors":{"authors":[{"text":"Hinsby, K.","contributorId":15013,"corporation":false,"usgs":true,"family":"Hinsby","given":"K.","affiliations":[],"preferred":false,"id":431520,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Højberg, Anker L.","contributorId":187776,"corporation":false,"usgs":false,"family":"Højberg","given":"Anker L.","affiliations":[],"preferred":false,"id":431518,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Engesgaard, P.","contributorId":12695,"corporation":false,"usgs":true,"family":"Engesgaard","given":"P.","affiliations":[],"preferred":false,"id":431519,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jensen, K.H.","contributorId":75710,"corporation":false,"usgs":true,"family":"Jensen","given":"K.H.","email":"","affiliations":[],"preferred":false,"id":431522,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Larsen, F.","contributorId":104288,"corporation":false,"usgs":true,"family":"Larsen","given":"F.","affiliations":[],"preferred":false,"id":431524,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":431523,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":431521,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70031445,"text":"70031445 - 2007 - Exploring rippled scour depressions offshore Huntington Beach, CA","interactions":[],"lastModifiedDate":"2023-07-25T11:11:48.23523","indexId":"70031445","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Exploring rippled scour depressions offshore Huntington Beach, CA","docAbstract":"<div id=\"abstracts\" data-extent=\"frontmatter\"><div class=\"core-container\"><div>Morphological model computations based on uniform (non-graded) sediment revealed an unrealistically strong scour of the sea floor in the immediate vicinity to the west of Maasvlakte 2. By means of a state-of-the-art graded sediment transport model the effect of natural armouring and sorting of bed material on the scour process has been examined. Sensitivity computations confirm that the development of the scour hole is strongly reduced due to the incorporation of armouring processes, suggesting an approximately 30% decrease in terms of erosion area below the –20m depth contour.</div></div></div>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)145","isbn":"0784409269; 9780784409268","usgsCitation":"Phillips, E., Storlazzi, C., Dartnell, P., and Edwards, B.D., 2007, Exploring rippled scour depressions offshore Huntington Beach, CA, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 1851-1864, https://doi.org/10.1061/40926(239)145.","productDescription":"14 p.","startPage":"1851","endPage":"1864","numberOfPages":"14","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":239858,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Huntington Beach","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -118.082519,33.628696 ], [ -118.082519,33.755729 ], [ -117.940591,33.755729 ], [ -117.940591,33.628696 ], [ -118.082519,33.628696 ] ] ] } } ] }","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a0e26e4b0c8380cd53303","contributors":{"authors":[{"text":"Phillips, Eleyne L.","contributorId":104289,"corporation":false,"usgs":true,"family":"Phillips","given":"Eleyne L.","affiliations":[],"preferred":false,"id":431528,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Storlazzi, Curt D. 0000-0001-8057-4490","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":77889,"corporation":false,"usgs":true,"family":"Storlazzi","given":"Curt D.","affiliations":[],"preferred":false,"id":431527,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dartnell, Peter 0000-0002-9554-729X pdartnell@usgs.gov","orcid":"https://orcid.org/0000-0002-9554-729X","contributorId":2688,"corporation":false,"usgs":true,"family":"Dartnell","given":"Peter","email":"pdartnell@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":431525,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Edwards, Brian D. bedwards@usgs.gov","contributorId":3161,"corporation":false,"usgs":true,"family":"Edwards","given":"Brian","email":"bedwards@usgs.gov","middleInitial":"D.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":431526,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030116,"text":"70030116 - 2007 - A model for estimating passive integrated transponder (PIT) tag antenna efficiencies for interval-specific emigration rates","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030116","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"A model for estimating passive integrated transponder (PIT) tag antenna efficiencies for interval-specific emigration rates","docAbstract":"Our goal was to understand movement and its interaction with survival for populations of stream salmonids at long-term study sites in the northeastern United States by employing passive integrated transponder (PIT) tags and associated technology. Although our PIT tag antenna arrays spanned the stream channel (at most flows) and were continuously operated, we are aware that aspects of fish behavior, environmental characteristics, and electronic limitations influenced our ability to detect 100% of the emigration from our stream site. Therefore, we required antenna efficiency estimates to adjust observed emigration rates. We obtained such estimates by testing a full-scale physical model of our PIT tag antenna array in a laboratory setting. From the physical model, we developed a statistical model that we used to predict efficiency in the field. The factors most important for predicting efficiency were external radio frequency signal and tag type. For most sampling intervals, there was concordance between the predicted and observed efficiencies, which allowed us to estimate the true emigration rate for our field populations of tagged salmonids. One caveat is that the model's utility may depend on its ability to characterize external radio frequency signals accurately. Another important consideration is the trade-off between the volume of data necessary to model efficiency accurately and the difficulty of storing and manipulating large amounts of data.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transactions of the American Fisheries Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/T06-053.1","issn":"00028487","usgsCitation":"Horton, G., Dubreuil, T., and Letcher, B., 2007, A model for estimating passive integrated transponder (PIT) tag antenna efficiencies for interval-specific emigration rates: Transactions of the American Fisheries Society, v. 136, no. 5, p. 1165-1176, https://doi.org/10.1577/T06-053.1.","startPage":"1165","endPage":"1176","numberOfPages":"12","costCenters":[],"links":[{"id":212938,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/T06-053.1"},{"id":240506,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"136","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-01-09","publicationStatus":"PW","scienceBaseUri":"5059e469e4b0c8380cd46643","contributors":{"authors":[{"text":"Horton, G.E.","contributorId":8594,"corporation":false,"usgs":true,"family":"Horton","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":425770,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dubreuil, T.L.","contributorId":106697,"corporation":false,"usgs":true,"family":"Dubreuil","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":425772,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Letcher, B. H. 0000-0003-0191-5678","orcid":"https://orcid.org/0000-0003-0191-5678","contributorId":48132,"corporation":false,"usgs":true,"family":"Letcher","given":"B.","middleInitial":"H.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":425771,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031991,"text":"70031991 - 2007 - Ground-penetrating radar: A tool for monitoring bridge scour","interactions":[],"lastModifiedDate":"2012-03-12T17:21:27","indexId":"70031991","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1574,"text":"Environmental & Engineering Geoscience","printIssn":"1078-7275","active":true,"publicationSubtype":{"id":10}},"title":"Ground-penetrating radar: A tool for monitoring bridge scour","docAbstract":"Ground-penetrating radar (GPR) data were acquired across shallow streams and/or drainage ditches at 10 bridge sites in Missouri by maneuvering the antennae across the surface of the water and riverbank from the bridge deck, manually or by boat. The acquired two-dimensional and three-dimensional data sets accurately image the channel bottom, demonstrating that the GPR tool can be used to estimate and/or monitor water depths in shallow fluvial environments. The study results demonstrate that the GPR tool is a safe and effective tool for measuring and/or monitoring scour in proximity to bridges. The technique can be used to safely monitor scour at assigned time intervals during peak flood stages, thereby enabling owners to take preventative action prior to potential failure. The GPR tool can also be used to investigate depositional and erosional patterns over time, thereby elucidating these processes on a local scale. In certain instances, in-filled scour features can also be imaged and mapped. This information may be critically important to those engaged in bridge design. GPR has advantages over other tools commonly employed for monitoring bridge scour (reflection seismic profiling, echo sounding, and electrical conductivity probing). The tool doesn't need to be coupled to the water, can be moved rapidly across (or above) the surface of a stream, and provides an accurate depth-structure model of the channel bottom and subchannel bottom sediments. The GPR profiles can be extended across emerged sand bars or onto the shore.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental and Engineering Geoscience","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/gseegeosci.13.1.1","issn":"10787275","usgsCitation":"Anderson, N., Ismael, A., and Thitimakorn, T., 2007, Ground-penetrating radar: A tool for monitoring bridge scour: Environmental & Engineering Geoscience, v. 13, no. 1, p. 1-10, https://doi.org/10.2113/gseegeosci.13.1.1.","startPage":"1","endPage":"10","numberOfPages":"10","costCenters":[],"links":[{"id":214810,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gseegeosci.13.1.1"},{"id":242562,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2b74e4b0c8380cd5b9c1","contributors":{"authors":[{"text":"Anderson, N.L.","contributorId":55129,"corporation":false,"usgs":true,"family":"Anderson","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":434022,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ismael, A.M.","contributorId":88168,"corporation":false,"usgs":true,"family":"Ismael","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":434024,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thitimakorn, T.","contributorId":75770,"corporation":false,"usgs":true,"family":"Thitimakorn","given":"T.","email":"","affiliations":[],"preferred":false,"id":434023,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031971,"text":"70031971 - 2007 - Modelingevapotranspirationina sub-tropical climate","interactions":[],"lastModifiedDate":"2012-03-12T17:21:26","indexId":"70031971","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2257,"text":"Journal of Environmental Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Modelingevapotranspirationina sub-tropical climate","docAbstract":"Evapotranspiration (ET) loss is estimated at about 80-85% of annual precipitation in South Florida. Accurate prediction of ET is important during and beyond the implementation of the Comprehensive Everglades Restoration Plan (CERP). In the USDA's Everglades Agro-Hydrology Model (EAHM) the soil water intake is linked with the soil water redistribution, soil evaporation, plant transpiration, subsurface lateral flow and subsurface drainage to calculate daily root zone soil water content. Hydrometeorological data from three sites with different soil moisture content and vegetal cover were used to evaluate the EAHM ET routine. In general, the EAHM water balance sub-model simulated the daily ET with acceptable accuracy in the area with standing water (Everglades) while using the Penman method. However, in the area with grass cover, there was a discrepancy between the model simulated and measured ET using either the Penman or the Priestley-Taylor method. The results indicated that in the region with two distinct climate patterns: dry (low humidity, more wind, and less precipitation) and wet (high humidity, less wind and more rainfall) such as South Florida, a combination method like Penman should be used for prediction of daily ET. However, in order to improve the predictability of the ET methods, information about surface albedo is needed for land surfaces with grass vegetation during the growing season.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"10583912","usgsCitation":"Savabi, M., Cochrane, T., German, E., Ikiz, C., and Cockshutt, N., 2007, Modelingevapotranspirationina sub-tropical climate: Journal of Environmental Hydrology, v. 15, p. 1-15.","startPage":"1","endPage":"15","numberOfPages":"15","costCenters":[],"links":[{"id":242789,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5c5ee4b0c8380cd6fc35","contributors":{"authors":[{"text":"Savabi, M.R.","contributorId":25376,"corporation":false,"usgs":true,"family":"Savabi","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":433947,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cochrane, T.A.","contributorId":42447,"corporation":false,"usgs":true,"family":"Cochrane","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":433948,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"German, E.","contributorId":45133,"corporation":false,"usgs":true,"family":"German","given":"E.","affiliations":[],"preferred":false,"id":433950,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ikiz, C.","contributorId":101901,"corporation":false,"usgs":true,"family":"Ikiz","given":"C.","email":"","affiliations":[],"preferred":false,"id":433951,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cockshutt, N.","contributorId":43187,"corporation":false,"usgs":true,"family":"Cockshutt","given":"N.","email":"","affiliations":[],"preferred":false,"id":433949,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031969,"text":"70031969 - 2007 - Surface drifter derived circulation in the northern and middle Adriatic Sea: Response to wind regime and season","interactions":[],"lastModifiedDate":"2012-03-12T17:21:26","indexId":"70031969","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2315,"text":"Journal of Geophysical Research C: Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Surface drifter derived circulation in the northern and middle Adriatic Sea: Response to wind regime and season","docAbstract":"More than 120 satellite-tracked drifters were deployed in the northern and middle Adriatic (NMA) Sea between September 2002 and November 2003, with the purpose of studying the surface circulation at mesoscale to seasonal scale in relation to wind forcing, river runoff, and bottom topography. Pseudo-Eulerian and Lagrangian statistics were calculated from the low-pass-filtered drifter velocity data between September 2002 and December 2003. The structure of the mean circulation is determined with unprecedented high horizontal resolution by the new data. In particular, mean currents, velocity variance, and kinetic energy levels are shown to be maximal in the Western Adriatic Current (WAC). Separating data into seasons, we found that the mean kinetic energy is maximal in fall, with high values also in winter, while it is significantly weaker in summer. High-resolution Local Area Model Italy winds were used to relate the drifter velocities to the wind fields. The surface currents appear to be significantly influenced by the winds. The mean flow during the northeasterly bora regime shows an intensification of the across-basin recirculating currents. In addition, the WAC is strongly intensified both in intensity and in its offshore lateral extension. In the southeasterly sirocco regime, northward flow without recirculation dominates in the eastern half of the basin, while during northwesterly maestro the WAC is enhanced. Separating the data into low and high Po River discharge rates for low-wind conditions shows that the WAC and the velocity fluctuations in front of the Po delta are stronger for high Po River runoff. Lagrangian covariance, diffusivity, and integral time and space scales are larger in the along-basin direction and are maximal in the southern portion of the WAC. Copyright 2006 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research C: Oceans","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2005JC003177","issn":"01480227","usgsCitation":"Ursella, L., Poulain, P., and Signell, R.P., 2007, Surface drifter derived circulation in the northern and middle Adriatic Sea: Response to wind regime and season: Journal of Geophysical Research C: Oceans, v. 112, no. 3, https://doi.org/10.1029/2005JC003177.","costCenters":[],"links":[{"id":487040,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005jc003177","text":"Publisher Index Page"},{"id":214994,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2005JC003177"},{"id":242757,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-12-15","publicationStatus":"PW","scienceBaseUri":"505b9fa5e4b08c986b31e74b","contributors":{"authors":[{"text":"Ursella, L.","contributorId":55658,"corporation":false,"usgs":true,"family":"Ursella","given":"L.","email":"","affiliations":[],"preferred":false,"id":433931,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Poulain, P.-M.","contributorId":81230,"corporation":false,"usgs":true,"family":"Poulain","given":"P.-M.","email":"","affiliations":[],"preferred":false,"id":433932,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Signell, R. P.","contributorId":89147,"corporation":false,"usgs":true,"family":"Signell","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":433933,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031446,"text":"70031446 - 2007 - Impacts of the 2004 Indian ocean tsunami on the southwest coasts of Sri Lanka","interactions":[],"lastModifiedDate":"2014-09-09T11:50:21","indexId":"70031446","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Impacts of the 2004 Indian ocean tsunami on the southwest coasts of Sri Lanka","docAbstract":"<p>The 2004 Indian Ocean tsunami caused major landscape changes along the southwest coasts of Sri Lanka that were controlled by the flow, natural topography and bathymetry, and anthropogenic modifications of the terrain. Landscape changes included substantial beach erosion and scouring of return-flow channels near the beach, and deposition of sand sheets across the narrow coastal plain. In many areas tsunami deposits also included abundant building rubble due to the extensive destruction of homes and businesses in areas of dense development. Trim lines and flow directions confirmed that shoreline orientation and wave refraction from embayments and rock-anchored headlands locally focused the flow and amplified the inundation. Tsunami deposits were 1 to 36 cm thick but most were less than 25 cm thick. Deposit thickness depended partly on antecedent topography. The deposits were composed of coarse to medium sand organized into a few sets of plane parallel laminae that exhibited overall upward fining and landward thinning trends.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)82","isbn":"0784409269; 9780784409268","usgsCitation":"Morton, R., Goff, J.A., and Nichol, S.L., 2007, Impacts of the 2004 Indian ocean tsunami on the southwest coasts of Sri Lanka, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 1061-1074, https://doi.org/10.1061/40926(239)82.","productDescription":"14 p.","startPage":"1061","endPage":"1074","numberOfPages":"14","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212410,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)82"},{"id":239891,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Sri Lanka","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 79.522,5.9191 ], [ 79.522,9.836 ], [ 81.8787,9.836 ], [ 81.8787,5.9191 ], [ 79.522,5.9191 ] ] ] } } ] }","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a38f8e4b0c8380cd61766","contributors":{"authors":[{"text":"Morton, Robert A.","contributorId":88333,"corporation":false,"usgs":true,"family":"Morton","given":"Robert A.","affiliations":[],"preferred":false,"id":431530,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goff, John A.","contributorId":96087,"corporation":false,"usgs":false,"family":"Goff","given":"John","email":"","middleInitial":"A.","affiliations":[{"id":12811,"text":"Institute for Geophysics, Jackson School of Geosciences, University of Texas, Austin","active":true,"usgs":false}],"preferred":false,"id":431531,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nichol, Scott L.","contributorId":41654,"corporation":false,"usgs":true,"family":"Nichol","given":"Scott","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":431529,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031966,"text":"70031966 - 2007 - Incorporating availability for detection in estimates of bird abundance","interactions":[],"lastModifiedDate":"2017-05-08T12:58:12","indexId":"70031966","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Incorporating availability for detection in estimates of bird abundance","docAbstract":"<p><span>Several bird-survey methods have been proposed that provide an estimated detection probability so that bird-count statistics can be used to estimate bird abundance. However, some of these estimators adjust counts of birds observed by the probability that a bird is detected and assume that all birds are available to be detected at the time of the survey. We marked male Henslow's Sparrows (</span><i>Ammodramus henslowii</i><span>) and Grasshopper Sparrows (</span><i>A. savannarum</i><span>) and monitored their behavior during May-July 2002 and 2003 to estimate the proportion of time they were available for detection. We found that the availability of Henslow's Sparrows declined in late June to &lt;10% for 5- or 10-min point counts when a male had to sing and be visible to the observer; but during 20 May-19 June, males were available for detection 39.1% (SD = 27.3) of the time for 5-min point counts and 43.9% (SD = 28.9) of the time for 10-min point counts (</span><i>n</i><span> = 54). We detected no temporal changes in availability for Grasshopper Sparrows, but estimated availability to be much lower for 5-min point counts (10.3%, SD = 12.2) than for 10-min point counts (19.2%, SD = 22.3) when males had to be visible and sing during the sampling period (</span><i>n</i><span> = 80). For distance sampling, we estimated the availability of Henslow's Sparrows to be 44.2% (SD = 29.0) and the availability of Grasshopper Sparrows to be 20.6% (SD = 23.5). We show how our estimates of availability can be incorporated in the abundance and variance estimators for distance sampling and modify the abundance and variance estimators for the double-observer method. Methods that directly estimate availability from bird counts but also incorporate detection probabilities need further development and will be important for obtaining unbiased estimates of abundance for these species.</span></p>","language":"English","publisher":"American Ornithological Society","doi":"10.1642/0004-8038(2007)124[96:IAFDIE]2.0.CO;2","issn":"00048038","usgsCitation":"Diefenbach, D., Marshall, M., Mattice, J., and Brauning, D., 2007, Incorporating availability for detection in estimates of bird abundance: The Auk, v. 124, no. 1, p. 96-106, https://doi.org/10.1642/0004-8038(2007)124[96:IAFDIE]2.0.CO;2.","productDescription":"11 p.","startPage":"96","endPage":"106","costCenters":[],"links":[{"id":242721,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"124","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a39e6e4b0c8380cd61a92","contributors":{"authors":[{"text":"Diefenbach, Duane R. 0000-0001-5111-1147","orcid":"https://orcid.org/0000-0001-5111-1147","contributorId":106592,"corporation":false,"usgs":true,"family":"Diefenbach","given":"Duane R.","affiliations":[],"preferred":false,"id":433919,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Marshall, M.R.","contributorId":82427,"corporation":false,"usgs":true,"family":"Marshall","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":433918,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mattice, J.A.","contributorId":12705,"corporation":false,"usgs":true,"family":"Mattice","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":433916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brauning, D.W.","contributorId":45129,"corporation":false,"usgs":true,"family":"Brauning","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":433917,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}