{"pageNumber":"1299","pageRowStart":"32450","pageSize":"25","recordCount":46734,"records":[{"id":70018768,"text":"70018768 - 1996 - Sand boils induced by the 1993 Mississippi River flood: Could they one day be misinterpreted as earthquake-induced liquefaction?","interactions":[],"lastModifiedDate":"2024-01-20T01:16:25.595473","indexId":"70018768","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Sand boils induced by the 1993 Mississippi River flood: Could they one day be misinterpreted as earthquake-induced liquefaction?","docAbstract":"

In areas that are seismically active but lacking clear surficial faulting, many paleoearthquake studies depend on the interpretation of ancient liquefaction features (sand blows) as indicators of prehistoric seismicity. Sand blows, however, can be mimicked by nonseismic sand boils formed by water seeping beneath levees during floods. We examined sand boils induced by the Mississippi River flood of 1993 in order to compare their characteristics with sand blows of the New Madrid earthquakes of 1811–1812. We found a number of criteria that allow a distinction between the two types of deposits. (1) Earthquake-induced liquefaction deposits are broadly distributed about an epicentral area, whereas flood-induced sand boils are limited to a narrow band along a river's levee. (2) The conduits of most earthquake-induced sand blows are planar dikes, whereas the conduits of flood-induced sand boils are most commonly tubular. (3) Depression of the preearthquake ground surface is usual for sand blows, not for sand boils. (4) Flood-induced sand boils tend to be better sorted and much finer than sand-blow deposits. (5) Source beds for earthquake-induced deposits occur at a wide range of depths, whereas the source bed for sand boils is always near surface. (6) Materials removed from the walls surrounding the vent of a sand blow are seen inside sand blows, but are rarely seen inside sand boils. In general, flood-induced sand boils examined are interpreted to represent a less-energetic genesis than earthquake-induced liquefaction.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1996)024<0171:SBIBTM>2.3.CO;2","issn":"00917613","usgsCitation":"Li, Y., Craven, J., Schweig, E., and Obermeier, S., 1996, Sand boils induced by the 1993 Mississippi River flood: Could they one day be misinterpreted as earthquake-induced liquefaction?: Geology, v. 24, no. 2, p. 171-174, https://doi.org/10.1130/0091-7613(1996)024<0171:SBIBTM>2.3.CO;2.","productDescription":"4 p.","startPage":"171","endPage":"174","numberOfPages":"4","costCenters":[],"links":[{"id":227228,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b868ee4b08c986b315fee","contributors":{"authors":[{"text":"Li, Y.","contributorId":41394,"corporation":false,"usgs":true,"family":"Li","given":"Y.","affiliations":[],"preferred":false,"id":380698,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Craven, J.","contributorId":64823,"corporation":false,"usgs":true,"family":"Craven","given":"J.","email":"","affiliations":[],"preferred":false,"id":380699,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schweig, E.S.","contributorId":34538,"corporation":false,"usgs":true,"family":"Schweig","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":380697,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Obermeier, S. F.","contributorId":17602,"corporation":false,"usgs":true,"family":"Obermeier","given":"S. F.","affiliations":[],"preferred":false,"id":380696,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70018939,"text":"70018939 - 1996 - Shear wave velocity structure in North America from large-scale waveform inversions of surface waves","interactions":[],"lastModifiedDate":"2024-11-12T17:48:26.68527","indexId":"70018939","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Shear wave velocity structure in North America from large-scale waveform inversions of surface waves","docAbstract":"

A two-step nonlinear and linear inversion is carried out to map the lateral heterogeneity beneath North America using surface wave data. The lateral resolution for most areas of the model is of the order of several hundred kilometers. The most obvious feature in the tomographic images is the rapid transition between low velocities in the tectonically active region west of the Rocky Mountains and high velocities in the stable central and eastern shield of North America. The model also reveals smaller-scale heterogeneous velocity structures. A high-velocity anomaly is imaged beneath the state of Washington that could be explained as the subducting Juan de Fuca plate beneath the Cascades. A large low-velocity structure extends along the coast from the Mendocino to the Rivera triple junction and to the continental interior across the southwestern United States and northwestern Mexico. Its shape changes notably with depth. This anomaly largely coincides with the part of the margin where no lithosphere is consumed since the subduction has been replaced by a transform fault. Evidence for a discontinuous subduction of the Cocos plate along the Middle American Trench is found. In central Mexico a transition is visible from low velocities across the Trans-Mexican Volcanic Belt (TMVB) to high velocities beneath the Yucatan Peninsula. Two elongated low-velocity anomalies beneath the Yellowstone Plateau and the eastern Snake River Plain volcanic system and beneath central Mexico and the TMVB seem to be associated with magmatism and partial melting. Another low-velocity feature is seen at depths of approximately 200 km beneath Florida and the Atlantic Coastal Plain. The inversion technique used is based on a linear surface wave scattering theory, which gives tomographic images of the relative phase velocity perturbations in four period bands ranging from 40 to 150 s. In order to find a smooth reference model a nonlinear inversion based on ray theory is first performed. After correcting for the crustal thickness the phase velocity perturbations obtained from the subsequent linear waveform inversion for the different period bands are converted to a three-layer model of S velocity perturbations (layer 1, 25–100 km; layer 2, 100–200 km; layer 3, 200–300 km). We have applied this method on 275 high-quality Rayleigh waves recorded by a variety of instruments in North America (IRIS/USGS, IRIS/IDA, TERRAscope, RSTN). Sensitivity tests indicate that the lateral resolution is especially good in the densely sampled western continental United States, Mexico, and the Gulf of Mexico.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/96JB00809","issn":"01480227","usgsCitation":"Alsina, D., Woodward, R., and Snieder, R., 1996, Shear wave velocity structure in North America from large-scale waveform inversions of surface waves: Journal of Geophysical Research B: Solid Earth, v. 101, no. 7, p. 15969-15986, https://doi.org/10.1029/96JB00809.","productDescription":"16 p.","startPage":"15969","endPage":"15986","numberOfPages":"18","costCenters":[],"links":[{"id":226716,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"101","issue":"7","noUsgsAuthors":false,"publicationDate":"1996-07-10","publicationStatus":"PW","scienceBaseUri":"505b8e58e4b08c986b3188a9","contributors":{"authors":[{"text":"Alsina, D.","contributorId":21705,"corporation":false,"usgs":true,"family":"Alsina","given":"D.","email":"","affiliations":[],"preferred":false,"id":381151,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Woodward, R.L.","contributorId":46237,"corporation":false,"usgs":true,"family":"Woodward","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":381152,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Snieder, R.K.","contributorId":10560,"corporation":false,"usgs":true,"family":"Snieder","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":381150,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70018670,"text":"70018670 - 1996 - Aeromagnetic survey over US to advance geomagnetic research","interactions":[],"lastModifiedDate":"2023-12-18T12:22:41.111667","indexId":"70018670","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Aeromagnetic survey over US to advance geomagnetic research","docAbstract":"

A proposed high-altitude survey of the United States offers an exciting and cost effective opportunity to collect magnetic-anomaly data. Lockheed Martin Missile and Space Company is considering funding a reimbursable ER-2 aircraft (Figure 1) mission to collect synthetic aperture radar (SAR) imagery at an altitude of about 21 km over the conterminous United States and Alaska. The collection of total and vector magnetic field data would be a secondary objective of the flight. Through this “piggyback approach,” the geomagnetic community would inherit invaluable magnetic data at a nominal cost. These data would provide insight on fundamental tectonic and thermal processes and give a new view of the structural and lithologic framework of the crust and upper mantle.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/96EO00187","issn":"00963941","usgsCitation":"Hildenbrand, T., Blakely, R., Hinze, W.J., Keller, G.R., Langel, R., Nabighian, M., and Roest, W., 1996, Aeromagnetic survey over US to advance geomagnetic research: Eos, Transactions, American Geophysical Union, v. 77, no. 28, p. 265-268, https://doi.org/10.1029/96EO00187.","productDescription":"4 p.","startPage":"265","endPage":"268","costCenters":[],"links":[{"id":227176,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"77","issue":"28","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"5059e8b7e4b0c8380cd47e55","contributors":{"authors":[{"text":"Hildenbrand, T.G.","contributorId":83892,"corporation":false,"usgs":true,"family":"Hildenbrand","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":380401,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":380399,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hinze, W. J.","contributorId":52607,"corporation":false,"usgs":false,"family":"Hinze","given":"W.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":380398,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Keller, Gordon R.","contributorId":90280,"corporation":false,"usgs":true,"family":"Keller","given":"Gordon","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":380402,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Langel, R.A.","contributorId":20918,"corporation":false,"usgs":true,"family":"Langel","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":380397,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nabighian, M.","contributorId":83286,"corporation":false,"usgs":true,"family":"Nabighian","given":"M.","email":"","affiliations":[],"preferred":false,"id":380400,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Roest, W.","contributorId":17382,"corporation":false,"usgs":true,"family":"Roest","given":"W.","email":"","affiliations":[],"preferred":false,"id":380396,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70018478,"text":"70018478 - 1996 - Volumetric analysis of a New England barrier system using ground-penetrating-radar and coring techniques","interactions":[],"lastModifiedDate":"2024-03-13T11:28:47.025442","indexId":"70018478","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2309,"text":"Journal of Geology","active":true,"publicationSubtype":{"id":10}},"title":"Volumetric analysis of a New England barrier system using ground-penetrating-radar and coring techniques","docAbstract":"

Ground-penetrating-radar (GPR) profiles calibrated with core data allow accurate assessments of coastal barrier volumes. We applied this procedure successfully to the barrier system along Saco Bay, Maine (USA), as part of a sediment-budget study that focused on present-day sand volumes in various coastal, shoreface, and inner-shelf lithosomes, and on sand fluxes that have affected the volume or distribution of sand in these sediment bodies through time. On GPR profiles, the components of the barrier lithosome are readily differentiated from other facies, except where the radar signal is attenuated by brackish or salty groundwater. Significant differences between dielectric properties of the barrier lithosome and other units commonly result in strong boundary reflectors. The mostly sandy barrier sediments allow deep penetration of GPR waves, in contrast to finer-grained strata and till-covered bedrock. Within the Saco Bay barrier system, \"\" of sediment are unevenly distributed. Two-thirds of the total barrier volume is contained within the northern and southern ends of the study area, in the Pine Point spit and the Ferry Beach/Goosefare complex, respectively. The central area around Old Orchard Beach is locally covered by only a thin veneer of barrier sand, averaging >3 m, that unconformably overlies shallow pre-Holocene facies. The prominence of barrier-spit facies and the distribution pattern of back-barrier sediments indicate that a high degree of segmentation, governed by antecedent topography, has affected the development of the Saco Bay barrier system. The present-day configuration of the barrier and back-barrier region along Saco Bay, however, conceals much of its early compartmentalized character.

","language":"English","publisher":"University of Chicago Press","doi":"10.1086/629840","issn":"00221376","usgsCitation":"Van Heteren, S., FitzGerald, D.M., Barber, D., Kelley, J.T., and Belknap, D.F., 1996, Volumetric analysis of a New England barrier system using ground-penetrating-radar and coring techniques: Journal of Geology, v. 104, no. 4, p. 471-483, https://doi.org/10.1086/629840.","productDescription":"13 p.","startPage":"471","endPage":"483","numberOfPages":"13","costCenters":[],"links":[{"id":227517,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc366e4b08c986b32b15f","contributors":{"authors":[{"text":"Van Heteren, S.","contributorId":70131,"corporation":false,"usgs":true,"family":"Van Heteren","given":"S.","email":"","affiliations":[],"preferred":false,"id":379736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"FitzGerald, D. M.","contributorId":55038,"corporation":false,"usgs":true,"family":"FitzGerald","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":379735,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barber, D.C.","contributorId":86504,"corporation":false,"usgs":true,"family":"Barber","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":379737,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kelley, J. T.","contributorId":34197,"corporation":false,"usgs":true,"family":"Kelley","given":"J.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":379734,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Belknap, D. F.","contributorId":96739,"corporation":false,"usgs":true,"family":"Belknap","given":"D.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":379738,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70018643,"text":"70018643 - 1996 - Use of SAR data to study active volcanoes in Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:19:25","indexId":"70018643","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1423,"text":"Earth Observation Quarterly","active":true,"publicationSubtype":{"id":10}},"title":"Use of SAR data to study active volcanoes in Alaska","docAbstract":"Synthetic Aperture Radar (SAR) data of the Westdahl, Veniaminof, and Novarupta volcanoes in the Aleutian Arc of Alaska were analysed to investigate recent surface volcanic processes. These studies support ongoing monitoring and research by the Alaska Volcano Observatory (AVO) in the North Pacific Ocean Region. Landforms and possible crustal deformation before, during, or after eruptions were detected and analysed using data from the European Remote Sensing Satellites (ERS), the Japanese Earth Resources Satellite (JERS) and the US Seasat platforms. Field observations collected by scientists from the AVO were used to verify the results from the analysis of SAR data.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth Observation Quarterly","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0256596X","usgsCitation":"Dean, K., Engle, K., Lu, Z., Eichelberger, J., Near, T., and Doukas, M., 1996, Use of SAR data to study active volcanoes in Alaska: Earth Observation Quarterly, no. 53, p. 21-23.","startPage":"21","endPage":"23","numberOfPages":"3","costCenters":[],"links":[{"id":227483,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"53","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbe88e4b08c986b329637","contributors":{"authors":[{"text":"Dean, K.G.","contributorId":64402,"corporation":false,"usgs":true,"family":"Dean","given":"K.G.","email":"","affiliations":[],"preferred":false,"id":380305,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Engle, K.","contributorId":10176,"corporation":false,"usgs":true,"family":"Engle","given":"K.","email":"","affiliations":[],"preferred":false,"id":380303,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lu, Z.","contributorId":106241,"corporation":false,"usgs":true,"family":"Lu","given":"Z.","affiliations":[],"preferred":false,"id":380307,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Eichelberger, J.","contributorId":107442,"corporation":false,"usgs":true,"family":"Eichelberger","given":"J.","email":"","affiliations":[],"preferred":false,"id":380308,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Near, T.","contributorId":55162,"corporation":false,"usgs":true,"family":"Near","given":"T.","affiliations":[],"preferred":false,"id":380304,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Doukas, M.","contributorId":68900,"corporation":false,"usgs":true,"family":"Doukas","given":"M.","email":"","affiliations":[],"preferred":false,"id":380306,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70019261,"text":"70019261 - 1996 - Implications of the Northridge earthquake for strong ground motions from thrust faults","interactions":[],"lastModifiedDate":"2023-10-23T11:18:55.759909","indexId":"70019261","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","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":"Implications of the Northridge earthquake for strong ground motions from thrust faults","docAbstract":"

The peak accelerations recorded on alluvial sites during the Northridge earthquake were about 50% larger than the median value predicted by current empirical attenuation relations at distances less than about 30 km. This raises the question of whether the ground motions from the Northridge earthquake are anomalous for thrust events or are representative of ground motions expected in future thrust earthquakes. Since the empirical data base contains few strong-motion records close to large-thrust earthquakes, it is difficult to assess whether the Northridge ground motions are anomalous based on recorded data alone. For this reason, we have used a broadband strong-motion simulation procedure to help assess whether the ground motions were anomalous. The simulation procedure has been validated against a large body of strong-motion data from California earthquakes, and so we expect it to produce accurate estimates of ground motions for any given rupture scenario, including blind-thrust events for which no good precedent existed in the strong-motion data base until the occurrence of the Northridge earthquake. The ground motions from the Northridge earthquake and our simulations of these ground motions have a similar pattern of departure from empirical attenuation relations for thrust earthquakes: the peak accelerations are at about the 84th percentile level for distances within 20 to 30 km and follow the median level for larger distances. This same pattern of departure from empirical attenuation relations was obtained in our simulations of the peak accelerations of an Elysian Park blind-thrust event prior to the occurrence of the Northridge earthquake. Since we are able to model this pattern with broadband simulations, and had done so before the Northridge earthquake occurred, this suggests that the Northridge strong-motion records are not anomalous and are representative of ground motions close to thrust faults. Accordingly, it seems appropriate to include these recordings in strong-motion data sets that are used to develop empirical ground-motion attenuation relations for thrust faults and to use this augmented data set as the basis for evaluating the need for modifications in design coefficients in the seismic provisions of building codes.

","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA08601BS115","issn":"00371106","usgsCitation":"Somerville, P., Saikia, C., Wald, D., and Graves, R., 1996, Implications of the Northridge earthquake for strong ground motions from thrust faults: Bulletin of the Seismological Society of America, v. 86, no. 1B, p. S115-S125, https://doi.org/10.1785/BSSA08601BS115.","productDescription":"11 p.","startPage":"S115","endPage":"S125","costCenters":[],"links":[{"id":226779,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Northridge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.88042975841473,\n 34.3841704408905\n ],\n [\n -118.88042975841473,\n 34.06168547205796\n ],\n [\n -118.11138678966469,\n 34.06168547205796\n ],\n [\n -118.11138678966469,\n 34.3841704408905\n ],\n [\n -118.88042975841473,\n 34.3841704408905\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"86","issue":"1B","noUsgsAuthors":false,"publicationDate":"1996-02-01","publicationStatus":"PW","scienceBaseUri":"505a392de4b0c8380cd61825","contributors":{"authors":[{"text":"Somerville, P.","contributorId":41158,"corporation":false,"usgs":true,"family":"Somerville","given":"P.","email":"","affiliations":[],"preferred":false,"id":382163,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saikia, C.","contributorId":72142,"corporation":false,"usgs":true,"family":"Saikia","given":"C.","email":"","affiliations":[],"preferred":false,"id":382164,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wald, D. 0000-0002-1454-4514","orcid":"https://orcid.org/0000-0002-1454-4514","contributorId":37866,"corporation":false,"usgs":true,"family":"Wald","given":"D.","affiliations":[],"preferred":false,"id":382162,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Graves, R.","contributorId":86910,"corporation":false,"usgs":true,"family":"Graves","given":"R.","affiliations":[],"preferred":false,"id":382165,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70019027,"text":"70019027 - 1996 - Calibration of GOES-VISSR, visible-band satellite data and its application to the analysis of a dust storm at Owens Lake, California","interactions":[],"lastModifiedDate":"2024-02-02T21:56:25.859664","indexId":"70019027","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1801,"text":"Geomorphology","active":true,"publicationSubtype":{"id":10}},"title":"Calibration of GOES-VISSR, visible-band satellite data and its application to the analysis of a dust storm at Owens Lake, California","docAbstract":"

As part of a joint Russian/American dust-storm experiment, GOES-VISSR (Geostationary Operational Environmental Satellite, Visible-Infrared Spin-Scan Radiometer), data from a visible-band satellite image of a large dust storm emanating from Owens Lake, California were acquired on March 10 and 11, 1993. The satellite data were calibrated to targets of known ground reflectance factors and processed with radiative transfer techniques to yield aerosol (dust) optical depth at those stages of the dust storm when concurrent ground-based measurements of optical depth were made. Calibration of the satellite data is crucial for comparing surficial changes in remotely sensed data acquired over a period of time from the same area and for determining accurate concentrations of atmospheric aerosols using radiative transfer techniques.

The calibration procedure forces the distribution of visible-band, DN (digital number) values, acquired on July 1, 1992, at 1731 GMT from the GOES-VISSR sensor over a large test area, to match the distribution of visible-band, DN values concurrently acquired from a Landsat MSS (Multispectral Scanner) sensor over the same test area; the Landsat MSS DN values were directly associated with reflectance factors measured from ground targets. The calibrated GOES-VISSR data for July 1, 1992, were then used to calibrate other GOES-VISSR data acquired on March 10 and 11, 1993, during the dust storm. Uncertainties in location of ground targets, bi-directional reflectance and atmospheric attenuation contribute an error of approximately ±0.02 in the satellite-inferred ground reflectance factors.

On March 11 at 1031 PST the satellite-received radiances during the peak of the storm were 3 times larger than predicted by our radiative transfer model for a pure clay dust plume of infinite optical depth. This result supported ground-based measurements that the plume at that time was composed primarily of large salt grains, probably sodium sulfate, which could not be properly characterized in our radiative transfer model. Further, the satellite data showed that the salt fell out of the plume within 35 km from the source. Finer-grained, clay dust was observed to extend beyond the salt-laden plume and was the major component of the dust plume after 1131 PST, when erosion of the salt crust on Owens Lake ceased. By 1331 and 1401 PST satellite-inferred, optical depths compared favorably with measurements concurrently acquired at the ground. Uncertainties in bi-directional reflectance, atmospheric attenuation, and locating ground points in the satellite data manifest errors between the inferred and measured optical depths in the range of 20 to 50%; these errors would be much greater without the calibration of the GOES-VISSR data.

Changes in satellite-inferred reflectance factors over the lake bed during the course of the storm showed that 76 km2 of the surface was disrupted during the March 11 storm, suggesting as much as 76 × 103 m3 of crustal material were displaced for each millimeter of several estimated to have been moved during the storm; an unknown fraction of the displaced material was suspended. The satellite data also showed dust fallout on mountain snowfields. Whereas fallout may have removed most of the salt, satellite data acquired at 1631 PST, when the plume had a large brightness contrast with the ground, showed that it covered over 2500 km2 and contained at least 1.6 × 109 g of sediment. For such a small source area, the dust represents a substantial contribution to the regional and global load of aerosols.

","language":"English","publisher":"Elsevier","doi":"10.1016/0169-555X(95)00105-E","issn":"0169555X","usgsCitation":"MacKinnon, D.J., Chavez, P., Fraser, R.S., Niemeyer, T., and Gillette, D.A., 1996, Calibration of GOES-VISSR, visible-band satellite data and its application to the analysis of a dust storm at Owens Lake, California: Geomorphology, v. 17, no. 1-3 SPEC. ISS., p. 229-248, https://doi.org/10.1016/0169-555X(95)00105-E.","productDescription":"20 p.","startPage":"229","endPage":"248","numberOfPages":"20","costCenters":[],"links":[{"id":226721,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"1-3 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f311e4b0c8380cd4b5a6","contributors":{"authors":[{"text":"MacKinnon, D. J.","contributorId":79145,"corporation":false,"usgs":true,"family":"MacKinnon","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":381444,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chavez, P.S. Jr.","contributorId":75147,"corporation":false,"usgs":true,"family":"Chavez","given":"P.S.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":381443,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fraser, R. S.","contributorId":19717,"corporation":false,"usgs":true,"family":"Fraser","given":"R.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":381442,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Niemeyer, T.C.","contributorId":82468,"corporation":false,"usgs":true,"family":"Niemeyer","given":"T.C.","email":"","affiliations":[],"preferred":false,"id":381445,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gillette, Dale A.","contributorId":14126,"corporation":false,"usgs":true,"family":"Gillette","given":"Dale","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":381441,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70018244,"text":"70018244 - 1996 - Remote mineralogic and lithologic mapping of the Ice River alkaline complex, British Columbia, Canada, using AVIRIS data","interactions":[],"lastModifiedDate":"2012-03-12T17:19:23","indexId":"70018244","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Remote mineralogic and lithologic mapping of the Ice River alkaline complex, British Columbia, Canada, using AVIRIS data","docAbstract":"The Ice River Alkaline Complex is a late Paleozoic intrusion of mafic alkaline rocks, syenite, and carbonatite exposed in southeastern British Columbia, Canada. The complex intrudes Cambrian and Ordovician shales, slates, and limestones of the Chancellor and Ottertail Formations and the McKay Group. We examined the alkaline complex and adjacent country rocks using Airborne Visible-Infrared Imaging Spectrometer (AVIRIS) data. The data were first calibrated to relative reflectance and then used to spectrally map mineralogies in the study area by using a linear spectral unmixing program. This technique models each pixel spectrum in an AVIRIS image as a linear combination of unique endmember spectra. We selected endmember spectra from well-exposed and spectrally distinct mineralogic units, vegetation, and snow. Four of the endmembers reflect mineralogic variations within the McKay group in the study area, and may represent lateral and vertical variations of sedimentary or metamorphic facies. Otherwise, the resultant spatial distribution of endmembers shows generally close agreement with the published geologic map, although, in several places, our image-map is more accurate than the published map.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00991112","usgsCitation":"Bowers, T.L., and Rowan, L.C., 1996, Remote mineralogic and lithologic mapping of the Ice River alkaline complex, British Columbia, Canada, using AVIRIS data: Photogrammetric Engineering and Remote Sensing, v. 62, no. 12, p. 1379-1385.","startPage":"1379","endPage":"1385","numberOfPages":"7","costCenters":[],"links":[{"id":227283,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"62","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa6ebe4b0c8380cd85105","contributors":{"authors":[{"text":"Bowers, T. L.","contributorId":62647,"corporation":false,"usgs":true,"family":"Bowers","given":"T.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":378986,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rowan, L. C.","contributorId":40584,"corporation":false,"usgs":true,"family":"Rowan","given":"L.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":378985,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1008650,"text":"1008650 - 1996 - Remote sensing of forest fire severity and vegetation recovery","interactions":[],"lastModifiedDate":"2024-02-14T17:45:33.404174","indexId":"1008650","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2083,"text":"International Journal of Wildland Fire","active":true,"publicationSubtype":{"id":10}},"title":"Remote sensing of forest fire severity and vegetation recovery","docAbstract":"

Burned forested areas have patterns of varying burn severity as a consequence of various topographic, vegetation, and meteorological factors. These patterns are detected and mapped using satellite data. Other ecological information can be abstracted from satellite data regarding rates of recovery of vegetation foliage and variation of burn severity on different vegetation types. Middle infrared wavelengths are useful for burn severity mapping because the land cover changes associated with burning increase reflectance in this part of the electromagnetic spectrum. Simple stratification of Landsat Thematic Mapper data define varying classes of burn severity because of changes in canopy cover, biomass removal, and soil chemical composition. Reasonable maps of burn severity are produced when the class limits of burn severity reflectance are applied to the entire satellite data. Changes in satellite reflectance over multiple years reveal the dynamics of vegetation and fire severity as low burn areas have lower changes in reflectance relative to high burn areas. This results as a consequence of how much the site was altered due to the burn and how much space is available for vegetation recovery. Analysis of change in reflectance across steppe, riparian, and forested vegetation types indicate that fires potentially increase biomass in steppe areas, while riparian and forested areas are slower to regrow to pre-fire conditions. This satellite-based technology is useful for mapping severely burned areas by exploring the ecological manifestations before and after fire.

","language":"English","publisher":"CSIRO Publishing","doi":"10.1071/WF9960125","usgsCitation":"White, J., Ryan, K., Key, C., and Running, S.W., 1996, Remote sensing of forest fire severity and vegetation recovery: International Journal of Wildland Fire, v. 6, no. 3, p. 125-136, https://doi.org/10.1071/WF9960125.","productDescription":"12 p.","startPage":"125","endPage":"136","numberOfPages":"12","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":132147,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67bf4e","contributors":{"authors":[{"text":"White, J.D.","contributorId":42923,"corporation":false,"usgs":true,"family":"White","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":318347,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ryan, K.C.","contributorId":34455,"corporation":false,"usgs":true,"family":"Ryan","given":"K.C.","email":"","affiliations":[],"preferred":false,"id":318346,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Key, C.H.","contributorId":74343,"corporation":false,"usgs":true,"family":"Key","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":318349,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Running, S. W.","contributorId":51257,"corporation":false,"usgs":false,"family":"Running","given":"S.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":318348,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70018145,"text":"70018145 - 1996 - Comparison of alternative spatial resolutions in the application of a spatially distributed biogeochemical model over complex terrain","interactions":[],"lastModifiedDate":"2012-03-12T17:19:22","indexId":"70018145","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1458,"text":"Ecological Modelling","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of alternative spatial resolutions in the application of a spatially distributed biogeochemical model over complex terrain","docAbstract":"Spatially distributed biogeochemical models may be applied over grids at a range of spatial resolutions, however, evaluation of potential errors and loss of information at relatively coarse resolutions is rare. In this study, a georeferenced database at the 1-km spatial resolution was developed to initialize and drive a process-based model (Forest-BGC) of water and carbon balance over a gridded 54976 km2 area covering two river basins in mountainous western Oregon. Corresponding data sets were also prepared at 10-km and 50-km spatial resolutions using commonly employed aggregation schemes. Estimates were made at each grid cell for climate variables including daily solar radiation, air temperature, humidity, and precipitation. The topographic structure, water holding capacity, vegetation type and leaf area index were likewise estimated for initial conditions. The daily time series for the climatic drivers was developed from interpolations of meteorological station data for the water year 1990 (1 October 1989-30 September 1990). Model outputs at the 1-km resolution showed good agreement with observed patterns in runoff and productivity. The ranges for model inputs at the 10-km and 50-km resolutions tended to contract because of the smoothed topography. Estimates for mean evapotranspiration and runoff were relatively insensitive to changing the spatial resolution of the grid whereas estimates of mean annual net primary production varied by 11%. The designation of a vegetation type and leaf area at the 50-km resolution often subsumed significant heterogeneity in vegetation, and this factor accounted for much of the difference in the mean values for the carbon flux variables. Although area wide means for model outputs were generally similar across resolutions, difference maps often revealed large areas of disagreement. Relatively high spatial resolution analyses of biogeochemical cycling are desirable from several perspectives and may be particularly important in the study of the potential impacts of climate change.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Modelling","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/0304-3800(95)00143-3","issn":"03043800","usgsCitation":"Turner, D., Dodson, R., and Marks, D., 1996, Comparison of alternative spatial resolutions in the application of a spatially distributed biogeochemical model over complex terrain: Ecological Modelling, v. 90, no. 1, p. 53-67, https://doi.org/10.1016/0304-3800(95)00143-3.","startPage":"53","endPage":"67","numberOfPages":"15","costCenters":[],"links":[{"id":205867,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0304-3800(95)00143-3"},{"id":227188,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f84de4b0c8380cd4cfe6","contributors":{"authors":[{"text":"Turner, D.P.","contributorId":80024,"corporation":false,"usgs":true,"family":"Turner","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":378681,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dodson, R.","contributorId":67233,"corporation":false,"usgs":true,"family":"Dodson","given":"R.","email":"","affiliations":[],"preferred":false,"id":378680,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marks, D.","contributorId":93217,"corporation":false,"usgs":true,"family":"Marks","given":"D.","email":"","affiliations":[],"preferred":false,"id":378682,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70018929,"text":"70018929 - 1996 - Outburst floods from glacier-dammed lakes: The effect of mode of lake drainage on flood magnitude","interactions":[],"lastModifiedDate":"2019-04-17T08:26:26","indexId":"70018929","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Outburst floods from glacier-dammed lakes: The effect of mode of lake drainage on flood magnitude","docAbstract":"

Published accounts of outburst floods from glacier‐dammed lakes show that a significant number of such floods are associated not with drainage through a tunnel incised into the basal ice—the process generally assumed—but rather with ice‐marginal drainage, mechanical failure of part of the ice dam, or both. Non‐tunnel floods are strongly correlated with formation of an ice dam by a glacier advancing from a tributary drainage into either a main river valley or a pre‐existing body of water (lake or fiord). For a given lake volume, non‐tunnel floods tend to have significantly higher peak discharges than tunnel‐drainage floods. Statistical analysis of data for floods associated with subglacial tunnels yields the following empirical relation between lake volume V and peak discharge Qp : Qp = 46V0.66 (r2 = 0.70), when Qp is expressed in metres per second and V in millions of cubic metres. This updates the so‐called Clague–Mathews relation. For non‐tunnel floods, the analogous relation is Qp = 1100V0.44 (r2 = 0.58). The latter relation is close to one found by Costa (1988) for failure of constructed earthen dams. This closeness is probably not coincidental but rather reflects similarities in modes of dam failure and lake drainage.  We develop a simple physical model of the breach‐widening process for non‐tunnel floods, assuming that (1) the rate of breach widening is controlled by melting of the ice, (2) outflow from the lake is regulated by the hydraulic condition of critical flow where water enters the breach, and (3) the effect of lake temperature may be dealt with as done by Clarke (1982). Calculations based on the model simulate quite well outbursts from Lake George, Alaska. Dimensional analysis leads to two approximations of the form Qp ∝ Vqf(hi, θ0), where q = 0.5 to 0.6, hi is initial lake depth, θ0 is lake temperature, and the form of f (hi, θ0) depends on the relative importance of viscous dissipation and the lake's thermal energy in determining the rate of breach opening. These expressions, along with the regression relations, should prove useful for assessing the probable magnitude of breach‐type outburst floods.

","language":"English","publisher":"Wiley","doi":"10.1002/(SICI)1096-9837(199608)21:8<701::AID-ESP615>3.0.CO;2-2","issn":"01979337","usgsCitation":"Walder, J.S., and Costa, J.E., 1996, Outburst floods from glacier-dammed lakes: The effect of mode of lake drainage on flood magnitude: Earth Surface Processes and Landforms, v. 21, no. 8, p. 701-723, https://doi.org/10.1002/(SICI)1096-9837(199608)21:8<701::AID-ESP615>3.0.CO;2-2.","productDescription":"23 p.","startPage":"701","endPage":"723","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":226529,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a71a6e4b0c8380cd766ca","contributors":{"authors":[{"text":"Walder, Joseph S. jswalder@usgs.gov","contributorId":2046,"corporation":false,"usgs":true,"family":"Walder","given":"Joseph","email":"jswalder@usgs.gov","middleInitial":"S.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":381120,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Costa, John E.","contributorId":105743,"corporation":false,"usgs":true,"family":"Costa","given":"John","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":381119,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70018475,"text":"70018475 - 1996 - An 84-kyr paleomagnetic record from the sediments of Lake Baikal, Siberia","interactions":[],"lastModifiedDate":"2024-11-13T16:59:39.614032","indexId":"70018475","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"An 84-kyr paleomagnetic record from the sediments of Lake Baikal, Siberia","docAbstract":"

We have conducted a paleomagnetic study of sediment cores obtained from the Selenga prodelta region of Lake Baikal, Russia. This record, which spans approximately the last 84 kyr, contributes to a better understanding of the nature of geomagnetic field behavior in Siberia and is a useful correlation and dating tool. We demonstrate that the Lake Baikal sediments are recording variations in the geomagnetic field. The directional record displays secular variation behavior with a geomagnetic excursion at 20 ka and additional excursions appearing as large-amplitude secular variation at 41, 61, and 67 ka. Smoothing of the geomagnetic excursion behavior occurs in Lake Baikal sediments owing to the intermediate sedimentation rate (13 cm kyr−1). The Lake Baikal relative paleointensity record correlates to absolute paleointensity data for the last 10 kyr and to relative paleointensity records from the Mediterranean Sea and Indian Ocean for the last 84 kyr. This correlation suggests a strong global (i.e., dipole) component to these records and further supports the reliability of sediments as recorders of relative geomagnetic paleointensity. We show that a relative geomagnetic intensity stratigraphy has a potential resolution of 7 kyr by correlating continental and marine records. The geomagnetic intensity stratigraphy helps constrain the age of the difficult to date Lake Baikal sediments.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/96JB00328","issn":"01480227","usgsCitation":"Peck, J., King, J., Colman, S.M., and Kravchinsky, V., 1996, An 84-kyr paleomagnetic record from the sediments of Lake Baikal, Siberia: Journal of Geophysical Research B: Solid Earth, v. 101, no. 5, p. 11365-11385, https://doi.org/10.1029/96JB00328.","productDescription":"21 p.","startPage":"11365","endPage":"11385","numberOfPages":"21","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":488990,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.uri.edu/gsofacpubs/1756","text":"External Repository"},{"id":227427,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"101","issue":"5","noUsgsAuthors":false,"publicationDate":"1996-05-10","publicationStatus":"PW","scienceBaseUri":"5059e9cde4b0c8380cd4847a","contributors":{"authors":[{"text":"Peck, J.A.","contributorId":26398,"corporation":false,"usgs":true,"family":"Peck","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":379724,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, J.W.","contributorId":19265,"corporation":false,"usgs":true,"family":"King","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":379723,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Colman, Steven M. 0000-0002-0564-9576","orcid":"https://orcid.org/0000-0002-0564-9576","contributorId":77482,"corporation":false,"usgs":true,"family":"Colman","given":"Steven","email":"","middleInitial":"M.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":379725,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kravchinsky, V.A.","contributorId":90475,"corporation":false,"usgs":true,"family":"Kravchinsky","given":"V.A.","email":"","affiliations":[],"preferred":false,"id":379726,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70018612,"text":"70018612 - 1996 - Slip history of the 1995 Kobe, Japan, earthquake determined from strong motion, teleseismic, and geodetic data","interactions":[],"lastModifiedDate":"2024-05-13T15:01:06.435766","indexId":"70018612","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2429,"text":"Journal of Physics of the Earth","active":true,"publicationSubtype":{"id":10}},"title":"Slip history of the 1995 Kobe, Japan, earthquake determined from strong motion, teleseismic, and geodetic data","docAbstract":"

Near-source ground motions, teleseismic body waveforms, and geodetic displacements produced by the 1995 Kobe, Japan, earthquake have been used to determine the spatial and temporal dislocation pattern on the faulting surfaces. A linear, least-squares approach was used to invert the data sets both independently and in unison in order to investigate the resolving power of each data set and to determine a model most consistent with all the available data. A two-fault model was used, with a single rupture plane representing faulting beneath Kobe and a second plane representing slip underneath Awaji Island. The total seismic moment is estimated to be 2.4×1019Nm (MW 6.9), with rupture partitioned such that about 40% of the slip was relatively deep (5-20 km) and northeast of the epicenter toward Kobe, and about 60% was toward the southwest and shallower (mostly 0-10 km) beneath Awaji Island. Analysis of the slip model indicates that the ground motions recorded within the severely damaged region of Kobe originated from the region of relatively low slip (about 1 m) deep beneath Kobe and not from the shallow, higher slip regions (about 3 m) beneath Awaji Island. Although the slip was relatively low beneath Kobe, the combined effects of source rupture directivity, a short slip duration, and site amplification conspired to generate very damaging ground motions within the city.

","language":"English","publisher":"The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan","doi":"10.4294/jpe1952.44.489","issn":"00223743","usgsCitation":"Wald, D., 1996, Slip history of the 1995 Kobe, Japan, earthquake determined from strong motion, teleseismic, and geodetic data: Journal of Physics of the Earth, v. 44, no. 5, p. 489-503, https://doi.org/10.4294/jpe1952.44.489.","productDescription":"15 p.","startPage":"489","endPage":"503","numberOfPages":"15","costCenters":[],"links":[{"id":479170,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4294/jpe1952.44.489","text":"Publisher Index Page"},{"id":227655,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9148e4b08c986b3197ff","contributors":{"authors":[{"text":"Wald, D.J. 0000-0002-1454-4514","orcid":"https://orcid.org/0000-0002-1454-4514","contributorId":43809,"corporation":false,"usgs":true,"family":"Wald","given":"D.J.","affiliations":[],"preferred":false,"id":380219,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70017714,"text":"70017714 - 1996 - Improving regional-model estimates of urban-runoff quality using local data","interactions":[],"lastModifiedDate":"2024-05-30T12:18:08.720086","indexId":"70017714","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Improving regional-model estimates of urban-runoff quality using local data","docAbstract":"

Urban water-quality managers need load estimates of storm-runoff pollutants to design effective remedial programs. Estimates are commonly made using published models calibrated to large regions of the country. This paper presents statistical methods, termed model-adjustment procedures (MAPs), which use a combination of local data and published regional models to improve estimates of urban-runoff quality. Each MAP is a form of regression analysis that uses a local data base as a calibration data set to adjust the regional model, in effect increasing the size of the local data base without additional, expensive data collection. The adjusted regional model can then be used to estimate storm-runoff quality at unmonitored sites and storms in the locality. The four MAPs presented in this study are (1) single-factor regression against the regional model prediction, Pu; (2) least-squares regression against Pu; (3) least-squares regression against Pu and additional local variables; and (4) weighted combination of Pu and a local-regression prediction. Identification of the statistically most valid method among these four depends upon characteristics of the local data base. A MAP-selection scheme based on statistical analysis of the calibration data set is presented and tested.

","language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.1996.tb03482.x","issn":"1093474X","usgsCitation":"Hoos, A., 1996, Improving regional-model estimates of urban-runoff quality using local data: Journal of the American Water Resources Association, v. 32, no. 4, p. 855-863, https://doi.org/10.1111/j.1752-1688.1996.tb03482.x.","productDescription":"9 p.","startPage":"855","endPage":"863","numberOfPages":"9","costCenters":[],"links":[{"id":228574,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"505a397ae4b0c8380cd6192b","contributors":{"authors":[{"text":"Hoos, A.B.","contributorId":23572,"corporation":false,"usgs":true,"family":"Hoos","given":"A.B.","affiliations":[],"preferred":false,"id":377341,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1012978,"text":"1012978 - 1996 - Assessing habitat selection when availability changes","interactions":[],"lastModifiedDate":"2023-12-14T17:23:54.602693","indexId":"1012978","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Assessing habitat selection when availability changes","docAbstract":"

We present a method of comparing data on habitat use and availability that allows availability to differ among observations. This method is applicable when habitats change over time and when animals are unable to move throughout a predetermined study area between observations. We used maximum—likelihood techniques to derive an index that estimates the probability that each habitat type would be used if all were equally available. We also demonstrate how these indices can be used to compare relative use of available habitats, assign them ranks, and assess statistical differences between pairs of indices. The set of these indices for all habitats can be compared between groups of animals that represent different seasons, sex or age classes, or experimental treatments. This method allows quantitative comparisons among types and is not affected by arbitrary decisions about which habitats to include in the study. We provide an example by comparing the availability of four categories of sea ice concentration to their use by adult female polar bears (Ursus maritimus), whose movements were monitored by satellite radio tracking in the Bering and Chukchi Seas during 1990. Use of ice categories by bears was nonrandom, and the pattern of use differed between spring and late summer seasons.

","language":"English","publisher":"Ecological Society of America","doi":"10.2307/2265671","usgsCitation":"Arthur, S.M., Manly, B.F., McDonald, L.L., and Garner, G.W., 1996, Assessing habitat selection when availability changes: Ecology, v. 77, no. 1, p. 215-227, https://doi.org/10.2307/2265671.","productDescription":"13 p.","startPage":"215","endPage":"227","numberOfPages":"13","costCenters":[{"id":106,"text":"Alaska Biological Science Center","active":false,"usgs":true}],"links":[{"id":129596,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"77","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a93e4b07f02db6582ef","contributors":{"authors":[{"text":"Arthur, Stephen M.","contributorId":189438,"corporation":false,"usgs":false,"family":"Arthur","given":"Stephen","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":318479,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Manly, Bryan F. J.","contributorId":332478,"corporation":false,"usgs":false,"family":"Manly","given":"Bryan","email":"","middleInitial":"F. J.","affiliations":[],"preferred":false,"id":890259,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDonald, Lyman L.","contributorId":14939,"corporation":false,"usgs":true,"family":"McDonald","given":"Lyman","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":890260,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Garner, Gerald W.","contributorId":149918,"corporation":false,"usgs":false,"family":"Garner","given":"Gerald","email":"","middleInitial":"W.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":318480,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70018607,"text":"70018607 - 1996 - The long-term salinity field in San Francisco Bay","interactions":[],"lastModifiedDate":"2019-02-20T09:36:12","indexId":"70018607","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","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":"The long-term salinity field in San Francisco Bay","docAbstract":"

Data are presented on long-term salinity behaviour in San Francisco Bay, California. A two-level, width averaged model of the tidally averaged salinity and circulation has been written in order to interpret the long-term (days to decades) salinity variability. The model has been used to simulate daily averaged salinity in the upper and lower levels of a 51 segment discretization of the Bay over the 22-yr period 1967-1988. Monthly averaged surface salinity from observations and monthly-averaged simulated salinity are in reasonable agreement. Good agreement is obtained from comparison with daily averaged salinity measured in the upper reaches of North Bay. The salinity variability is driven primarily by freshwater inflow with relatively minor oceanic influence. All stations exhibit a marked seasonal cycle in accordance with the Mediterranean climate, as well as a rich spectrum of variability due to extreme inflow events and extended periods of drought. Monthly averaged salinity intrusion positions have a pronounced seasonal variability and show an approximately linear response to the logarithm of monthly averaged Delta inflow. Although few observed data are available for studies of long-term salinity stratification, modelled stratification is found to be strongly dependent on freshwater inflow; the nature of that dependence varies throughout the Bay. Near the Golden Gate, stratification tends to increase up to very high inflows. In the central reaches of North Bay, modelled stratification maximizes as a function of inflow and further inflow reduces stratification. Near the head of North Bay, lowest summer inflows are associated with the greatest modelled stratification. Observations from the central reaches of North Bay show marked spring-neap variations in stratification and gravitational circulation, both being stronger at neap tides. This spring-neap variation is simulated by the model. A feature of the modelled stratification is a hysteresis in which, for a given spring-neap tidal range and fairly steady inflows, the stratification is higher progressing from neaps to springs than from springs to neaps. The simulated responses of the Bay to perturbations in coastal sea salinity and Delta inflow have been used to further delineate the time-scales of salinity variability. Simulations have been performed about low inflow, steady-state conditions for both salinity and Delta inflow perturbations. For salinity perturbations a small, sinusoidal salinity signal with a period of 1 yr has been applied at the coastal boundary as well as a pulse of salinity with a duration of one day. For Delta inflow perturbations a small, sinusoidally varying inflow signal with a period of 1 yr has been superimposed on an otherwise constant Delta inflow, as well as a pulse of inflow with a duration of one day. Perturbations is coastal salinity dissipate as they move through the Bay. Seasonal perturbations require about 40-45 days to propagate from the coastal ocean to the Delta and to the head of South Bay. The response times of the model to perturbations in freshwater inflow are faster than this in North Bay and comparable in South Bay. In North Bay, time-scales are consistent with advection due to lower level, up-estuary transport of coastal salinity perturbations; for inflow perturbations, faster response times arise from both upper level, down-estuary advection and much faster, down-estuary migration of isohalines in response to inflow volume continuity. In South Bay, the dominant time-scales are governed by tidal dispersion.

","language":"English","publisher":"Elsevier","doi":"10.1016/0278-4343(96)00032-5","issn":"02784343","usgsCitation":"Uncles, R., and Peterson, D.H., 1996, The long-term salinity field in San Francisco Bay: Continental Shelf Research, v. 16, no. 15, p. 2005-2039, https://doi.org/10.1016/0278-4343(96)00032-5.","productDescription":"35 p.","startPage":"2005","endPage":"2039","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":227571,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0278-4343(96)00032-5"}],"volume":"16","issue":"15","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bada5e4b08c986b323d44","contributors":{"authors":[{"text":"Uncles, R.J.","contributorId":33468,"corporation":false,"usgs":true,"family":"Uncles","given":"R.J.","affiliations":[],"preferred":false,"id":380208,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterson, D. H.","contributorId":92229,"corporation":false,"usgs":true,"family":"Peterson","given":"D.","middleInitial":"H.","affiliations":[],"preferred":false,"id":380209,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70019397,"text":"70019397 - 1996 - A brief Oligocene period of flood volcanism in Yemen: Implications for the duration and rate of continental flood volcanism at the Afro-Arabian triple junction","interactions":[],"lastModifiedDate":"2023-12-08T12:33:30.729804","indexId":"70019397","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"A brief Oligocene period of flood volcanism in Yemen: Implications for the duration and rate of continental flood volcanism at the Afro-Arabian triple junction","docAbstract":"

40Ar29Ar dating of mineral separates and whole-rock (WR) samples has established that basaltic continental flood volcanism (CFV) began between 30.9 and 29.2 Ma in northwestern and southwestern Yemen, respectively. Rhyolitic volcanism commenced at 29.0–29.3 Ma throughout Yemen. Lower basaltic lavas were erupted every 10–100 kyr, whereas upper bimodal volcanic units were erupted every 100–500 kyr, which reflects generation of rhyolitic magmas from basalts that resided for longer periods in lithospheric magma chambers than during the early phase of exclusively mafic magmatism. The youngest dated flood volcanic units were erupted between 26.9 and 26.5 Ma throughout Yemen.

The duration of preserved CFV defined by 40Ar29Ar  dating (4.4 myr) contrasts with the wide range of WR K Ar dates previously obtained in Yemen (> 50 myr). 40Ar39Ar\">40Ar39Ar step-heating studies of WR samples has shown that this discrepancy is due to the disturbed Ar systematics of volcanic samples. Most samples have experienced post-crystallization loss of radiogenic Ar and/or contain excess Ar, with only ca. 25% of the WR K Ar dates within 1–2 myr of true crystallization ages. WR K Ar data can be screened for reliability using the radiogenic Ar yield and 40K36Ar\">40K36Ar ratio, which reflect the Ar retentivity of the sample, the likelihood that alteration has disturbed a sample's Ar systematics, and the susceptibility of the sample to a finite amount of Ar loss or the presence of a finite amount of excess Ar. Examination of existing WR KAr data in the Ethiopian part of this flood volcanic province, using these parameters, suggests that much of these data are also misleading. Two phases of flood volcanism are inferred in Ethiopia and Eritrea at 38-30 Ma and ca. 20 Ma. The older phase is equivalent to that in Yemen, and is consistent with the progression in basal volcanic ages obtained in Yemen moving from north to south. The younger phase is related to the onset of upper crustal extension and incipient Red Sea-Gulf of Aden rifting.

The sequence of events — surface uplift (?), flood magmatism and subsequent upper crustal extension — in Yemen is consistent with the involvement of a mantle plume at the Afro-Arabian tripe junction. However, the overall eruption rate for this flood volcanic province is only 0.03 km3/yr, much slower than that postulated for other plume-related provinces such as the Deccan or Siberian Traps, but perhaps comparable to the Paraná-Etendeka province, which also contains significant amounts of rhyolitic volcanic products like those of Yemen-Ethiopia. The highly variable eruption rates in individual provinces must reflect the very different character of individual plumes, or the control of lithospheric structure and plate tectonic stresses on the surface manifestations of plumes. The long duration of CFV and large amounts of rhyolitic volcanism at the Afro-Arabian triple junction may be attributed to the relatively slow separation of the African and Arabian plates compared with, for example, the rifting of India and the Deccan Traps.

","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(95)00229-6","issn":"0012821X","usgsCitation":"Baker, J., Snee, L., and Menzies, M., 1996, A brief Oligocene period of flood volcanism in Yemen: Implications for the duration and rate of continental flood volcanism at the Afro-Arabian triple junction: Earth and Planetary Science Letters, v. 138, no. 1-4, p. 39-55, https://doi.org/10.1016/0012-821X(95)00229-6.","productDescription":"16 p.","startPage":"39","endPage":"55","numberOfPages":"17","costCenters":[],"links":[{"id":226434,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Yemen","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 39.73715797891529,\n 21.806565242862888\n ],\n [\n 39.73715797891529,\n 8.348621012898946\n ],\n [\n 55.38168922891538,\n 8.348621012898946\n ],\n [\n 55.38168922891538,\n 21.806565242862888\n ],\n [\n 39.73715797891529,\n 21.806565242862888\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"138","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e32ce4b0c8380cd45e6d","contributors":{"authors":[{"text":"Baker, J.","contributorId":61967,"corporation":false,"usgs":true,"family":"Baker","given":"J.","affiliations":[],"preferred":false,"id":382597,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snee, L.","contributorId":35477,"corporation":false,"usgs":true,"family":"Snee","given":"L.","email":"","affiliations":[],"preferred":false,"id":382596,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Menzies, M.","contributorId":106271,"corporation":false,"usgs":true,"family":"Menzies","given":"M.","email":"","affiliations":[],"preferred":false,"id":382598,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70018433,"text":"70018433 - 1996 - Calculation of earthquake rupture histories using a hybrid global search algorithm: Application to the 1992 Landers, California, earthquake","interactions":[],"lastModifiedDate":"2013-01-22T15:39:21","indexId":"70018433","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3071,"text":"Physics of the Earth and Planetary Interiors","active":true,"publicationSubtype":{"id":10}},"title":"Calculation of earthquake rupture histories using a hybrid global search algorithm: Application to the 1992 Landers, California, earthquake","docAbstract":"A method is presented for the simultaneous calculation of slip amplitudes and rupture times for a finite fault using a hybrid global search algorithm. The method we use combines simulated annealing with the downhill simplex method to produce a more efficient search algorithm then either of the two constituent parts. This formulation has advantages over traditional iterative or linearized approaches to the problem because it is able to escape local minima in its search through model space for the global optimum. We apply this global search method to the calculation of the rupture history for the Landers, California, earthquake. The rupture is modeled using three separate finite-fault planes to represent the three main fault segments that failed during this earthquake. Both the slip amplitude and the time of slip are calculated for a grid work of subfaults. The data used consist of digital, teleseismic P and SH body waves. Long-period, broadband, and short-period records are utilized to obtain a wideband characterization of the source. The results of the global search inversion are compared with a more traditional linear-least-squares inversion for only slip amplitudes. We use a multi-time-window linear analysis to relax the constraints on rupture time and rise time in the least-squares inversion. Both inversions produce similar slip distributions, although the linear-least-squares solution has a 10% larger moment (7.3 ?? 1026 dyne-cm compared with 6.6 ?? 1026 dyne-cm). Both inversions fit the data equally well and point out the importance of (1) using a parameterization with sufficient spatial and temporal flexibility to encompass likely complexities in the rupture process, (2) including suitable physically based constraints on the inversion to reduce instabilities in the solution, and (3) focusing on those robust rupture characteristics that rise above the details of the parameterization and data set.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Physics of the Earth and Planetary Interiors","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0031-9201(95)03108-1","issn":"00319201","usgsCitation":"Hartzell, S., and Liu, P., 1996, Calculation of earthquake rupture histories using a hybrid global search algorithm: Application to the 1992 Landers, California, earthquake: Physics of the Earth and Planetary Interiors, v. 95, no. 1-2, p. 79-99, https://doi.org/10.1016/0031-9201(95)03108-1.","startPage":"79","endPage":"99","numberOfPages":"21","costCenters":[],"links":[{"id":227383,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266262,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0031-9201(95)03108-1"}],"volume":"95","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f302e4b0c8380cd4b547","contributors":{"authors":[{"text":"Hartzell, S.","contributorId":12603,"corporation":false,"usgs":true,"family":"Hartzell","given":"S.","email":"","affiliations":[],"preferred":false,"id":379555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, P.","contributorId":98443,"corporation":false,"usgs":true,"family":"Liu","given":"P.","email":"","affiliations":[],"preferred":false,"id":379556,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70019406,"text":"70019406 - 1996 - An earthquake history derived from stratigraphic and microfossil evidence of relative sea-level change at Coos Bay, southern coastal Oregon","interactions":[],"lastModifiedDate":"2023-12-22T00:22:39.977249","indexId":"70019406","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"An earthquake history derived from stratigraphic and microfossil evidence of relative sea-level change at Coos Bay, southern coastal Oregon","docAbstract":"

Much of the uncertainty in determining the number and magnitude of past great earthquakes in the Cascadia subduction zone of western North America stems from difficulties in using estuarine stratigraphy to infer the size and rate of late Holocene relative sea-level changes. A sequence of interbedded peaty and muddy intertidal sediment beneath a small, protected tidal marsh in a narrow inlet of Coos Bay, Oregon, records ten rapid to instantaneous rises in relative sea level. Each rise is marked by a contact that records an upward transition from peaty to muddy sediment. But only two contacts, dating from about 1700 and 2300 yr ago, show the site-wide extent and abrupt changes in lithology and foraminiferal and diatom assemblages that can be used to infer at least half a meter of sudden coseismic subsidence. Although the characteristics of a third, gradual contact do not differ from those of some contacts produced by nonseismic processes, regional correlation with other similar sequences and high-precision 14C dating suggest that the third contact records a great plate-boundary earthquake about 300 yr ago. A fourth contact formed too slowly to have been caused by coseismic subsidence. Because lithologic and microfossil data are not sufficient to distinguish a coseismic from a nonseismic origin for the other six peat-mud contacts, we cannot determine earthquake recurrence intervals at this site. Similar uncertainties in great earthquake recurrence and magnitude prevail at similar sites elsewhere in the Cascadia subduction zone, except those with sequences showing changes in fossils indicative of >1 m of sudden subsidence, sand sheets deposited by tsunamis, or liquefaction features.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1996)108<0141:AEHDFS>2.3.CO;2","issn":"00167606","usgsCitation":"Nelson, A., Jennings, A.E., and Kashima, K., 1996, An earthquake history derived from stratigraphic and microfossil evidence of relative sea-level change at Coos Bay, southern coastal Oregon: Geological Society of America Bulletin, v. 108, no. 2, p. 141-154, https://doi.org/10.1130/0016-7606(1996)108<0141:AEHDFS>2.3.CO;2.","productDescription":"14 p.","startPage":"141","endPage":"154","numberOfPages":"14","costCenters":[],"links":[{"id":226477,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Coos Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -124.58482065888467,\n 43.557766675711235\n ],\n [\n -124.58482065888467,\n 43.16638706288873\n ],\n [\n -123.90366831513472,\n 43.16638706288873\n ],\n [\n -123.90366831513472,\n 43.557766675711235\n ],\n [\n -124.58482065888467,\n 43.557766675711235\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"108","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea24e4b0c8380cd48672","contributors":{"authors":[{"text":"Nelson, A.R. 0000-0001-7117-7098","orcid":"https://orcid.org/0000-0001-7117-7098","contributorId":55078,"corporation":false,"usgs":true,"family":"Nelson","given":"A.R.","affiliations":[],"preferred":false,"id":382629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jennings, A. E.","contributorId":66682,"corporation":false,"usgs":true,"family":"Jennings","given":"A.","middleInitial":"E.","affiliations":[],"preferred":false,"id":382630,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kashima, K.","contributorId":76474,"corporation":false,"usgs":true,"family":"Kashima","given":"K.","email":"","affiliations":[],"preferred":false,"id":382631,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70018179,"text":"70018179 - 1996 - Unrealistic parameter estimates in inverse modelling: A problem or a benefit for model calibration?","interactions":[],"lastModifiedDate":"2012-03-12T17:19:12","indexId":"70018179","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1934,"text":"IAHS-AISH Publication","active":true,"publicationSubtype":{"id":10}},"title":"Unrealistic parameter estimates in inverse modelling: A problem or a benefit for model calibration?","docAbstract":"Estimation of unrealistic parameter values by inverse modelling is useful for constructed model discrimination. This utility is demonstrated using the three-dimensional, groundwater flow inverse model MODFLOWP to estimate parameters in a simple synthetic model where the true conditions and character of the errors are completely known. When a poorly constructed model is used, unreasonable parameter values are obtained even when using error free observations and true initial parameter values. This apparent problem is actually a benefit because it differentiates accurately and inaccurately constructed models. The problems seem obvious for a synthetic problem in which the truth is known, but are obscure when working with field data. Situations in which unrealistic parameter estimates indicate constructed model problems are illustrated in applications of inverse modelling to three field sites and to complex synthetic test cases in which it is shown that prediction accuracy also suffers when constructed models are inaccurate.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"IAHS-AISH Publication","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"01447815","usgsCitation":"Poeter, E.P., and Hill, M.C., 1996, Unrealistic parameter estimates in inverse modelling: A problem or a benefit for model calibration?: IAHS-AISH Publication, v. 237, p. 277-285.","startPage":"277","endPage":"285","numberOfPages":"9","costCenters":[],"links":[{"id":227014,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"237","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbce1e4b08c986b328e53","contributors":{"authors":[{"text":"Poeter, E. P.","contributorId":63851,"corporation":false,"usgs":false,"family":"Poeter","given":"E.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":378777,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, M. C.","contributorId":48993,"corporation":false,"usgs":true,"family":"Hill","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":378776,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1001122,"text":"1001122 - 1996 - Trophic analysis of ruffe (Gymnocephalus cernuus) and white perch (Morone americana) in a Lake Superior Coastal food web, using stable isotope techniques","interactions":[],"lastModifiedDate":"2024-05-08T12:00:49.635626","indexId":"1001122","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Trophic analysis of ruffe (Gymnocephalus cernuus) and white perch (Morone americana) in a Lake Superior Coastal food web, using stable isotope techniques","docAbstract":"

We examined the trophic roles of two nonindigenous species, ruffe (Gymnocephalus cernuus) and white perch (Morone americana), in the food web of a western Lake Superior coastal wetland, using stable isotope techniques. The δ15N signature of ruffe was similar to published values for YOY yellow perch (Perca flavescens), and intermediate to those of white sucker (Catostomus commersoni), a ben-thivore, and alewife (Alosa pseudoharengus), a planktivore. Ruffe of all sizes sampled had an approximately 4%c enrichment in 15N over published values for benthos, and a 3%c 15N enrichment over values for plankton. A 3–4%c difference is consistent with commonly reported shifts in 5I5N signature between food and prey. These results suggest that ruffe in this food web feed on both benthos and plankton. White perch undergo ontogenetic shifts in nitrogen isotope signatures similar to those reported earlier for yellow perch, and appear to become piscivorous by the time they are 25 cm long. Our data suggest that interactions between ruffe and yellow perch could represent a competitive bottleneck. If yellow perch are able to grow large enough to become piscivorous, they should be able to escape competition with ruffe. In contrast, white perch appear to have the potential to compete with yellow perch throughout their lives.

","language":"English","publisher":"Elsevier","doi":"10.1016/S0380-1330(96)70968-1","usgsCitation":"Sierszen, M., Keough, J., and Hagley, C., 1996, Trophic analysis of ruffe (Gymnocephalus cernuus) and white perch (Morone americana) in a Lake Superior Coastal food web, using stable isotope techniques: Journal of Great Lakes Research, v. 22, no. 2, p. 436-443, https://doi.org/10.1016/S0380-1330(96)70968-1.","productDescription":"8 p.","startPage":"436","endPage":"443","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":128860,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a49e4b07f02db6243b9","contributors":{"authors":[{"text":"Sierszen, M.E.","contributorId":97849,"corporation":false,"usgs":true,"family":"Sierszen","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":310542,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Keough, J.R.","contributorId":87880,"corporation":false,"usgs":true,"family":"Keough","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":310541,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hagley, C.A.","contributorId":25509,"corporation":false,"usgs":true,"family":"Hagley","given":"C.A.","affiliations":[],"preferred":false,"id":310540,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70182756,"text":"70182756 - 1996 - Maximum likelihood estimation for the double-count method with independent observers","interactions":[],"lastModifiedDate":"2024-02-15T15:49:03.632748","indexId":"70182756","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2151,"text":"Journal of Agricultural, Biological, and Environmental Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Maximum likelihood estimation for the double-count method with independent observers","docAbstract":"

Data collected under a double-count protocol during line transect surveys were analyzed using new maximum likelihood methods combined with Akaike's information criterion to provide estimates of the abundance of polar bear (Ursus maritimus Phipps) in a pilot study off the coast of Alaska. Visibility biases were corrected by modeling the detection probabilities using logistic regression functions. Independent variables that influenced the detection probabilities included perpendicular distance of bear groups from the flight line and the number of individuals in the groups. A series of models were considered which vary from (1) the simplest, where the probability of detection was the same for both observers and was not affected by either distance from the flight line or group size, to (2) models where probability of detection is different for the two observers and depends on both distance from the transect and group size. Estimation procedures are developed for the case when additional variables may affect detection probabilities. The methods are illustrated using data from the pilot polar bear survey and some recommendations are given for design of a survey over the larger Chukchi Sea between Russia and the United States.

","language":"English","publisher":"The International Biometric Society","doi":"10.2307/1400364","usgsCitation":"Manly, B.F., McDonald, L.L., and Garner, G.W., 1996, Maximum likelihood estimation for the double-count method with independent observers: Journal of Agricultural, Biological, and Environmental Statistics, v. 1, no. 2, p. 170-189, https://doi.org/10.2307/1400364.","productDescription":"20 p.","startPage":"170","endPage":"189","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":336314,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -154.51171875,\n 69.70286804851057\n ],\n [\n -144.51416015625,\n 69.70286804851057\n ],\n [\n -144.51416015625,\n 72.8095809269161\n ],\n [\n -154.51171875,\n 72.8095809269161\n ],\n [\n -154.51171875,\n 69.70286804851057\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58b69a44e4b01ccd54ff3fd2","contributors":{"authors":[{"text":"Manly, Bryan F.J.","contributorId":41770,"corporation":false,"usgs":true,"family":"Manly","given":"Bryan","email":"","middleInitial":"F.J.","affiliations":[],"preferred":false,"id":673608,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDonald, Lyman L.","contributorId":14939,"corporation":false,"usgs":true,"family":"McDonald","given":"Lyman","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":673609,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Garner, Gerald W.","contributorId":149918,"corporation":false,"usgs":false,"family":"Garner","given":"Gerald","email":"","middleInitial":"W.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":673610,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70178204,"text":"70178204 - 1996 - Comparison of the uptake of dioxin-like compounds by caged channel catfish and semipermeable membrane devices in the Saginaw River, Michigan","interactions":[],"lastModifiedDate":"2017-08-26T14:41:08","indexId":"70178204","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","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":"Comparison of the uptake of dioxin-like compounds by caged channel catfish and semipermeable membrane devices in the Saginaw River, Michigan","docAbstract":"

Elevated concentrations of planar, halogenated hydrocarbons have been linked to reproductive problems in a variety of fish-eating birds and mammals in the Great Lakes and in particular Saginaw Bay. Currently, there are no accurate procedures to assess bioavailability of these contaminants. Polychlorinated dibenzo-p-dioxins and dibenzofurans and mono- and non-ortho-chloro-substituted biphenyls in water at the femtogram to picogram per liter range were passively concentrated in semipermeable membrane devices (SPMDs), and these data were compared to the bioconcentration in co-exposed (caged) channel catfish. Sediment-derived water concentration estimates, calculated from a steady-state partitioning model, did not correlate well to those derived from either fish or SPMDs. The use of SPMDs demonstrated the utility of in-situ passive sampling over inference of water concentrations from accumulation in biota or partitioning with sediment. Residues ac cumulated by SPMDs have been shown to be proportional to analyte water concentration, whereas this does not appear to be the case for fish tissues. The greater amounts of 3,3‘,4,4‘-tetrachlorobiphenyl and 2,3,7,8-tetrachlorodibenzofuran accumulated in SPMDs than in exposed channel catfish indicated those non-passive aspects of bioconcentration in organisms, such as biotransformation and elimination, introduced 50−500% error in the assumed degree of exposure.

","language":"English","publisher":"ACS Publications","doi":"10.1021/es960263m","usgsCitation":"Gale, R.W., Huckins, J.N., Petty, J.D., Peterman, P.H., Williams, L.L., Morse, D., Schwartz, T.R., and Tillitt, D.E., 1996, Comparison of the uptake of dioxin-like compounds by caged channel catfish and semipermeable membrane devices in the Saginaw River, Michigan: Environmental Science & Technology, v. 31, no. 1, p. 178-187, https://doi.org/10.1021/es960263m.","productDescription":"10 p.","startPage":"178","endPage":"187","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":330840,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"1","noUsgsAuthors":false,"publicationDate":"1996-12-30","publicationStatus":"PW","scienceBaseUri":"5821a0dee4b02f1a881de982","contributors":{"authors":[{"text":"Gale, Robert W. 0000-0002-8533-141X rgale@usgs.gov","orcid":"https://orcid.org/0000-0002-8533-141X","contributorId":2808,"corporation":false,"usgs":true,"family":"Gale","given":"Robert","email":"rgale@usgs.gov","middleInitial":"W.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":653235,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Huckins, James N.","contributorId":83454,"corporation":false,"usgs":true,"family":"Huckins","given":"James","email":"","middleInitial":"N.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":false,"id":653236,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Petty, Jimmie D.","contributorId":175402,"corporation":false,"usgs":false,"family":"Petty","given":"Jimmie","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":653237,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peterman, Paul H. ppeterman@usgs.gov","contributorId":2872,"corporation":false,"usgs":true,"family":"Peterman","given":"Paul","email":"ppeterman@usgs.gov","middleInitial":"H.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":653238,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Williams, Lisa L.","contributorId":172543,"corporation":false,"usgs":false,"family":"Williams","given":"Lisa","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":653239,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Morse, Douglas","contributorId":176716,"corporation":false,"usgs":false,"family":"Morse","given":"Douglas","email":"","affiliations":[],"preferred":false,"id":653240,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Schwartz, Ted R.","contributorId":36510,"corporation":false,"usgs":true,"family":"Schwartz","given":"Ted","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":653241,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Tillitt, Donald E. 0000-0002-8278-3955 dtillitt@usgs.gov","orcid":"https://orcid.org/0000-0002-8278-3955","contributorId":1875,"corporation":false,"usgs":true,"family":"Tillitt","given":"Donald","email":"dtillitt@usgs.gov","middleInitial":"E.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":653242,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70184423,"text":"70184423 - 1996 - Phylogenetic relationships within the Alcidae (Charadriiformes: Aves) inferred from total molecular evidence","interactions":[],"lastModifiedDate":"2017-03-08T14:38:28","indexId":"70184423","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2773,"text":"Molecular Biology and Evolution","active":true,"publicationSubtype":{"id":10}},"title":"Phylogenetic relationships within the Alcidae (Charadriiformes: Aves) inferred from total molecular evidence","docAbstract":"

The Alcidae is a unique assemblage of Northern Hemisphere seabirds that forage by \"flying\" underwater. Despite obvious affinities among the species, their evolutionary relationships are unclear. We analyzed nucleotide sequences of 1,045 base pairs of the mitochondrial cytochrome b gene and allelic profiles for 37 allozyme loci in all 22 extant species. Trees were constructed on independent and combined data sets using maximum parsimony and distance methods that correct for superimposed changes. Alternative methods of analysis produced only minor differences in relationships that were supported strongly by bootstrapping or standard error tests. Combining sequence and allozyme data into a single analysis provided the greatest number of relationships receiving strong support. Addition of published morphological and ecological data did not improve support for any additional relationship. All analyses grouped species into six distinct lineages: (1) the dovekie (Alle alle) and auks, (2) guillemots, (3) brachyramphine murrelets, (4) synthliboramphine murrelets, (5) true auklets, and (6) the rhinoceros auklet (Cerorhinca monocerata) and puffins. The two murres (genus Uria) were sister taxa, and the black guillemot (Cepphus grylle) was basal to the other guillemots. The Asian subspecies of the marbled murrelet (Brachyramphus marmoratus perdix) was the most divergent brachyramphine murrelet, and two distinct lineages occurred within the synthliboramphine murrelets. Cassin's auklet (Ptychoramphus aleuticus) and the rhinoceros auklet were basal to the other auklets and puffins, respectively, and the Atlantic (Fratercula arctica) and horned (Fratercula corniculata) puffins were sister taxa. Several relationships among tribes, among the dovekie and auks, and among the auklets could not be resolved but resembled \"star\" phylogenies indicative of adaptive radiations at different depths within the trees.

","language":"English","publisher":"Oxford Academic","doi":"10.1093/oxfordjournals.molbev.a025595","usgsCitation":"Friesen, V.L., Baker, A.J., and Piatt, J.F., 1996, Phylogenetic relationships within the Alcidae (Charadriiformes: Aves) inferred from total molecular evidence: Molecular Biology and Evolution, v. 13, no. 2, p. 359-367, https://doi.org/10.1093/oxfordjournals.molbev.a025595.","productDescription":"9 p.","startPage":"359","endPage":"367","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":479085,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/oxfordjournals.molbev.a025595","text":"Publisher Index Page"},{"id":337122,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c12663e4b014cc3a3d3525","contributors":{"authors":[{"text":"Friesen, Vicki L.","contributorId":59407,"corporation":false,"usgs":false,"family":"Friesen","given":"Vicki","email":"","middleInitial":"L.","affiliations":[{"id":7029,"text":"Queen's University, Kingston, Ontario, Canada","active":true,"usgs":false}],"preferred":false,"id":681423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baker, Allan J.","contributorId":36383,"corporation":false,"usgs":false,"family":"Baker","given":"Allan","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":681424,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":681425,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70017821,"text":"70017821 - 1996 - An approach for using AVHRR data to monitor U.S. great plains grasslands","interactions":[],"lastModifiedDate":"2017-03-31T13:54:00","indexId":"70017821","displayToPublicDate":"1996-01-01T00:00:00","publicationYear":"1996","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1753,"text":"Geocarto International","active":true,"publicationSubtype":{"id":10}},"title":"An approach for using AVHRR data to monitor U.S. great plains grasslands","docAbstract":"Environmental monitoring requires regular observations regarding the status of the landscape- The concept behind most monitoring efforts using satellite data involve deriving normalized difference vegetation index (NDVI) values or accumulating the NDVI over a specified time period. These efforts attempt to estimate the continuous growth of green biomass by using continuous additions of NDVI as a surrogate measure. To build upon this concept, this study proposes three refinements; 1) use an objective definition of the current growing season to adjust the time window during which the NDVI is accumulated, 2) accumulate only the NDVI values which are affected by green vegetation, and 3) base monitoring units upon land cover type. These refinements improve the sensitivity of detecting interannual vegetation variability, reduce the need for extensive and detailed knowledge of ground conditions and crop calendars, provide a framework in which several types of monitoring can take place over diverse land cover types, and provide an objective time frame during which monitoring takes place.","language":"English","publisher":"Taylor & Francis","doi":"10.1080/10106049609354544","issn":"10106049","usgsCitation":"Reed, B., Loveland, T., and Tieszen, L., 1996, An approach for using AVHRR data to monitor U.S. great plains grasslands: Geocarto International, v. 11, no. 3, p. 13-22, https://doi.org/10.1080/10106049609354544.","startPage":"13","endPage":"22","numberOfPages":"10","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":228630,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea0be4b0c8380cd485d1","contributors":{"authors":[{"text":"Reed, B. C. 0000-0002-1132-7178","orcid":"https://orcid.org/0000-0002-1132-7178","contributorId":55594,"corporation":false,"usgs":true,"family":"Reed","given":"B. C.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":377663,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Loveland, Thomas R. 0000-0003-3114-6646","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":106125,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas R.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":false,"id":377664,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tieszen, L.L.","contributorId":24046,"corporation":false,"usgs":true,"family":"Tieszen","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":377662,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}