In previous work, a relational data structure aimed at the exchange of spatial data between systems was developed. As this data structure was relational it was of first normal form, but compliance with the higher normal forms was not investigated. Recently, a new procedural method for composing fully normalized data structures from the basic data fields has been developed by H. C. Smith, as an alternative to the process of non-loss decomposition which is difficult to understand. Smith's method has been applied to data fields required to store points, lines and polygons in a chain-node spatial data model. When geographic domain, coverage layer and map are also considered, the procedure naturally leads to a catalogue model, needed for the exchange of spatial data. Although the method produces a fully normalized data structure, it is not as easy to identify which normal forms are responsible for the ultimate arrangement of the data fields into relations, but the benefits of these criteria for data base development also apply to spatial data structures and related ancillary data.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/02693798708927791","usgsCitation":"van Roessel, J.W., 1987, Design of a spatial data structure using the relational normal forms: International Journal of Geographical Information Systems, v. 1, no. 1, p. 33-50, https://doi.org/10.1080/02693798708927791.","productDescription":"18 p.","startPage":"33","endPage":"50","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":297852,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54dd2b72e4b08de9379b3397","contributors":{"authors":[{"text":"van Roessel, Jan W.","contributorId":35745,"corporation":false,"usgs":true,"family":"van Roessel","given":"Jan","email":"","middleInitial":"W.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":540137,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015126,"text":"70015126 - 1987 - Changes in the H O Ar isotope composition of clays during retrograde alteration","interactions":[],"lastModifiedDate":"2024-04-03T15:37:04.127499","indexId":"70015126","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Changes in the H O Ar isotope composition of clays during retrograde alteration","docAbstract":"K-Ar ages of illite alteration associated with Middle Proterozoic Athabasca unconformity-type U deposits in Saskatchewan range from 414 to 1493 Ma. The K-Ar ages correlate with water contents and δD values such that illites with young K-Ar ages have δD values as low as −169 and water contents as high as 7.7 wt.% whereas illites with older ages have δD values near −70 and water contents near 4 wt.%. Water extracted at 400°C from illites with low δD values and high water contents has low δD and δ18O values similar to those of modern meteoric water suggesting that some of the illites associated with the original deposition of the ore underwent varying degrees of retrograde alteration. The alteration is initiated by hydration of sites in the interlayer region of the illite which results in the partial resetting of the K-Ar ages and introduction of excess structural water in the form of interlamellar water. The interlamellar water is enriched in 18O by about 7 per mil relative to the water that physically surrounded the clay particle. Further alteration decreases the δD value and increases the δ18O value of the illite by isotopic exchange between the mineral and the interlamellar water. Although the chemical compositions and XRD patterns of the altered illites indicate that no detectable smectite component is present in the samples, the isotopic results suggest that the altered illites may be an early precursor in the formation of mixed-layer illite/smectite by retrograde alteration of pure illite. The wide variation of δD values of chlorite and kaolinite from these U deposits is analogous to that of the illite suggesting that retrograde alteration of clays by meteoric water can be substantial. The general association of altered clays with areas containing the highest concentrations of U is probably related to localized permeability within the ore zone.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(87)90100-1","issn":"00167037","usgsCitation":"Wilson, M., Kyser, T., Mehnert, H.H., and Hoeve, J., 1987, Changes in the H O Ar isotope composition of clays during retrograde alteration: Geochimica et Cosmochimica Acta, v. 51, no. 4, p. 869-878, https://doi.org/10.1016/0016-7037(87)90100-1.","productDescription":"10 p.","startPage":"869","endPage":"878","numberOfPages":"10","costCenters":[],"links":[{"id":224291,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f42ee4b0c8380cd4bbaf","contributors":{"authors":[{"text":"Wilson, M.R.","contributorId":31529,"corporation":false,"usgs":true,"family":"Wilson","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":370142,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kyser, T.K.","contributorId":25585,"corporation":false,"usgs":true,"family":"Kyser","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":370141,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mehnert, H. H.","contributorId":16382,"corporation":false,"usgs":true,"family":"Mehnert","given":"H.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":370140,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hoeve, J.","contributorId":80429,"corporation":false,"usgs":true,"family":"Hoeve","given":"J.","email":"","affiliations":[],"preferred":false,"id":370143,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70014874,"text":"70014874 - 1987 - Examples of transient sounding from groundwater exploration in sedimentary aquifers","interactions":[],"lastModifiedDate":"2024-03-20T22:38:47.424001","indexId":"70014874","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Examples of transient sounding from groundwater exploration in sedimentary aquifers","docAbstract":"Examples of the use of transient electromagnetic soundings for three ground-water exploration problems in sedimentary aquifers are given. The examples include: (1) estimating depths to water table and bedrock in an alluvium-filled basin, (2) mapping a confined fresh-water aquifer in bedrock sediments, and (3) locating a freshwater/salt-water interface in a glacial-outwash aquifer. The technique works quite well for these problems within the limitations imposed by the problem of equivalence. For thin conductive targets (S-equivalence) such as a salt-water lens, the ratio of the layer thickness to its resistivity can be determined, but not the individual layer parameters. The thickness of thin resistive zones (H-equivalence) can be resolved, but the resistivity of such layers is not well determined. The problem of H-equivalence is more severe than the S-equivalence. Equivalence imposes restrictions on the transient sounding method for some ground-water exploration problems. Model studies prior to field work can be used to assess the usefulness of the technique for a particular exploration objective.
We develop a stochastic model for the transport of stored sediment down a river channel. The model is based on probabilities of transition of particles among four different sediment storage reservoirs, called active (often mobilized), semiactive, inactive, and stable (hardly ever mobilized). The probabilities are derived from computed sediment residence times. Two aspects of sediment storage are investigated: flushing times of sediment out of a storage reservoir and changes in the quantity of sediment stored in different reservoirs due to seasonal sediment transport into, and out of, a reach. We apply the model to Redwood Creek, a gravel bed river in northern California. Although the Redwood Creek data set is incomplete, the application serves as an example of the sorts of analyses that can be done with the method. The application also provides insights into the sediment storage process. Sediment flushing times are highly dependent on the degree of interaction of the stable reservoir with the more mobile sediment reservoirs. The most infrequent and highest intensity storm events, which mobilize the stable reservoir, are responsible for the long-term shifts in sediment storage. Turnover times of channel sediment in all but the stable reservoir are on the order of 750 years, suggesting this is all the time needed for thorough interchange between these sediment compartments and cycling of most sediment particles from the initial reservoir to the ocean. Finally, the Markov model has adequately characterized sediment storage changes in Redwood Creek for 1947–1982, especially for the active reservoir. The model replicates field observation of the passage of a slug of sediment through the active reservoir of the middle reach of Redwood Creek in the 18 years following a major storm in 1964 that introduced large quantities of landslide debris to the channel.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR023i009p01738","usgsCitation":"Kelsey, H.M., Lamberson, R., and Madej, M.A., 1987, Stochastic model for the long-term transport of stored sediment in a river channel: Water Resources Research, v. 2, no. 9, p. 1738-1750, https://doi.org/10.1029/WR023i009p01738.","productDescription":"13 p.","startPage":"1738","endPage":"1750","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":130080,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Redwood Creek","volume":"2","issue":"9","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b4260","contributors":{"authors":[{"text":"Kelsey, Harvey M.","contributorId":184057,"corporation":false,"usgs":false,"family":"Kelsey","given":"Harvey","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":315811,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lamberson, Roland","contributorId":32027,"corporation":false,"usgs":true,"family":"Lamberson","given":"Roland","email":"","affiliations":[],"preferred":false,"id":315812,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Madej, Mary Ann 0000-0003-2831-3773 mary_ann_madej@usgs.gov","orcid":"https://orcid.org/0000-0003-2831-3773","contributorId":40304,"corporation":false,"usgs":true,"family":"Madej","given":"Mary","email":"mary_ann_madej@usgs.gov","middleInitial":"Ann","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":315810,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014631,"text":"70014631 - 1987 - Gravitational stresses in anisotropic rock masses","interactions":[],"lastModifiedDate":"2013-01-18T13:19:12","indexId":"70014631","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2071,"text":"International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts","active":true,"publicationSubtype":{"id":10}},"title":"Gravitational stresses in anisotropic rock masses","docAbstract":"This paper presents closed-form solutions for the stress field induced by gravity in anisotropic rock masses. These rocks are assumed to be laterally restrained and are modelled as a homogeneous, orthotropic or transversely isotropic, linearly elastic material. The analysis, constrained by the thermodynamic requirement that strain energy be positive definite, gives the following important result: inclusion of anisotropy broadens the range of permissible values of gravity-induced horizontal stresses. In fact, for some ranges of anisotropic rock properties, it is thermodynamically admissible for gravity-induced horizontal stresses to exceed the vertical stress component; this is not possible for the classical isotropic solution. Specific examples are presented to explore the nature of the gravity-induced stress field in anisotropic rocks and its dependence on the type, degree and orientation of anisotropy with respect to the horizontal ground surface. ?? 1987.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0148-9062(87)91227-7","issn":"01489062","usgsCitation":"Amadei, B., Savage, W.Z., and Swolfs, H., 1987, Gravitational stresses in anisotropic rock masses: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, v. 24, no. 1, p. 5-14, https://doi.org/10.1016/0148-9062(87)91227-7.","productDescription":"p.5-14","startPage":"5","endPage":"14","numberOfPages":"10","costCenters":[],"links":[{"id":265943,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0148-9062(87)91227-7"},{"id":225268,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a29f4e4b0c8380cd5ada0","contributors":{"authors":[{"text":"Amadei, B.","contributorId":86902,"corporation":false,"usgs":true,"family":"Amadei","given":"B.","affiliations":[],"preferred":false,"id":368865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Savage, W. Z.","contributorId":106481,"corporation":false,"usgs":true,"family":"Savage","given":"W.","email":"","middleInitial":"Z.","affiliations":[],"preferred":false,"id":368866,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swolfs, H.S.","contributorId":70759,"corporation":false,"usgs":true,"family":"Swolfs","given":"H.S.","affiliations":[],"preferred":false,"id":368864,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70046376,"text":"70046376 - 1987 - Alaska interim land cover mapping program","interactions":[],"lastModifiedDate":"2013-07-08T12:47:42","indexId":"70046376","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":311,"text":"Data Users Guide","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"7","title":"Alaska interim land cover mapping program","docAbstract":"In order to meet the requirements of the Alaska National Interest Lands Conservation Act (ANILCA) for comprehensive resource and management plans from all major land management agencies in Alaska, the USGS has begun a program to classify land cover for the entire State using Landsat digital data. Vegetation and land cover classifications, generated in cooperation with other agencies, currently exist for 115 million acres of Alaska. Using these as a base, the USGS has prepared a comprehensive plan for classifying the remaining areas of the State. The development of this program will lead to a complete interim vegetation and land cover classification system for Alaska and allow the dissemination of digital data for those areas classified. At completion, 153 Alaska 1:250,000-scale quadrangles will be published and will include land cover from digital Landsat classifications, statistical summaries of all land cover by township, and computer-compatible tapes. An interagency working group has established an Alaska classification system (table 1) composed of 18 classes modified from \"A land use and land cover classification system for use with remote sensor data\" (Anderson and others, 1976), and from \"Revision of a preliminary classification system for vegetation of Alaska\" (Viereck and Dyrness, 1982) for the unique ecoregions which are found in Alaska.","language":"English","publisher":"U.S. Government Printing Office","publisherLocation":"Washington, DC","doi":"10.3133/70046376","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1987, Alaska interim land cover mapping program: U.S. Geological Survey Data Users Guide 7, iii, 18 p., https://doi.org/10.3133/70046376.","productDescription":"iii, 18 p.","numberOfPages":"24","additionalOnlineFiles":"N","costCenters":[{"id":149,"text":"Branch of Technical Management","active":false,"usgs":true}],"links":[{"id":273571,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70046376/report-thumb.jpg"},{"id":274614,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70046376/report.pdf"}],"country":"United States","state":"Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 170.00000,54.666667 ], [ 170.00000,71.833333 ], [ -130.00000,71.833333 ], [ -130.00000,54.666667 ], [ 170.00000,54.666667 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51b6f564e4b0097a7158e58d","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":535547,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1014014,"text":"1014014 - 1987 - Immunostimulation of antibody-producing cells and humoral antibody to fish bacterins by a biological response modifier","interactions":[],"lastModifiedDate":"2024-05-07T11:01:36.254923","indexId":"1014014","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2285,"text":"Journal of Fish Biology","active":true,"publicationSubtype":{"id":10}},"title":"Immunostimulation of antibody-producing cells and humoral antibody to fish bacterins by a biological response modifier","docAbstract":"Numbers of splenic antibody-producing cells and humoral antibody titres were elevated during immunization regimes in rainbow trout when the bacterins Yersinia ruckeri or Aeromonas salmonicida O-antigen preparations were mixed with the immunostimulator FK-565. Fish sampled 14 days after injection showed a marked increase in the immune response when doses of 5, 10 or 100 μg of antigen were used. The immunostimulator may aid initial antigen uptake and processing.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.1987.tb05298.x","usgsCitation":"Kitao, T., Yoshida, T., Anderson, D.P., Dixon, O.W., and Blanch, A., 1987, Immunostimulation of antibody-producing cells and humoral antibody to fish bacterins by a biological response modifier: Journal of Fish Biology, v. 31, no. Supp A, p. 87-91, https://doi.org/10.1111/j.1095-8649.1987.tb05298.x.","productDescription":"5 p.","startPage":"87","endPage":"91","numberOfPages":"5","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":129875,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"Supp A","noUsgsAuthors":false,"publicationDate":"2006-01-24","publicationStatus":"PW","scienceBaseUri":"4f4e4a09e4b07f02db5fa7ff","contributors":{"authors":[{"text":"Kitao, T.","contributorId":62176,"corporation":false,"usgs":true,"family":"Kitao","given":"T.","email":"","affiliations":[],"preferred":false,"id":319618,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yoshida, T.","contributorId":107225,"corporation":false,"usgs":true,"family":"Yoshida","given":"T.","email":"","affiliations":[],"preferred":false,"id":319620,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, D. P.","contributorId":32469,"corporation":false,"usgs":true,"family":"Anderson","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":319616,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dixon, O. W.","contributorId":101588,"corporation":false,"usgs":true,"family":"Dixon","given":"O.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":319619,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blanch, A.","contributorId":35682,"corporation":false,"usgs":true,"family":"Blanch","given":"A.","affiliations":[],"preferred":false,"id":319617,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70014724,"text":"70014724 - 1987 - Higher resolution satellite remote sensing and the impact on image mapping","interactions":[],"lastModifiedDate":"2018-03-08T10:12:19","indexId":"70014724","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":626,"text":"Acta Astronautica","printIssn":"0094-5765","active":true,"publicationSubtype":{"id":10}},"title":"Higher resolution satellite remote sensing and the impact on image mapping","docAbstract":"Recent advances in spatial, spectral, and temporal resolution of civil land remote sensing satellite data are presenting new opportunities for image mapping applications. The U.S. Geological Survey's experimental satellite image mapping program is evolving toward larger scale image map products with increased information content as a result of improved image processing techniques and increased resolution. Thematic mapper data are being used to produce experimental image maps at 1:100,000 scale that meet established U.S. and European map accuracy standards. Availability of high quality, cloud-free, 30-meter ground resolution multispectral data from the Landsat thematic mapper sensor, along with 10-meter ground resolution panchromatic and 20-meter ground resolution multispectral data from the recently launched French SPOT satellite, present new cartographic and image processing challenges.
The need to fully exploit these higher resolution data increases the complexity of processing the images into large-scale image maps. The removal of radiometric artifacts and noise prior to geometric correction can be accomplished by using a variety of image processing filters and transforms. Sensor modeling and image restoration techniques allow maximum retention of spatial and radiometric information. An optimum combination of spectral information and spatial resolution can be obtained by merging different sensor types. These processing techniques are discussed and examples are presented.
","language":"English","publisher":"Elsevier","doi":"10.1016/0094-5765(87)90109-3","usgsCitation":"Watkins, A.H., and Thormodsgard, J.M., 1987, Higher resolution satellite remote sensing and the impact on image mapping: Acta Astronautica, v. 16, p. 221-232, https://doi.org/10.1016/0094-5765(87)90109-3.","productDescription":"12 p.","startPage":"221","endPage":"232","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":225851,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3143e4b0c8380cd5dd95","contributors":{"authors":[{"text":"Watkins, Allen H.","contributorId":10721,"corporation":false,"usgs":true,"family":"Watkins","given":"Allen","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":369133,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thormodsgard, June M. thor@usgs.gov","contributorId":3035,"corporation":false,"usgs":true,"family":"Thormodsgard","given":"June","email":"thor@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":369132,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014595,"text":"70014595 - 1987 - Computation of unsteady flows in the Alabama River","interactions":[],"lastModifiedDate":"2017-05-10T16:24:29","indexId":"70014595","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3718,"text":"Water Resources Bulletin","printIssn":"0043-1370","active":true,"publicationSubtype":{"id":10}},"title":"Computation of unsteady flows in the Alabama River","docAbstract":"An application is described of the branch-network flow model, BRANCH, to the upper Alabama River system in central Alabama. The model is used to simulate one-dimensional unsteady flows and water surface elevations in approximately 60 river miles of the Alabama River system. Preliminary calibration was made using 72 hours of observed data. Simulated discharges are about 10 percent lower than observed discharges at higher discharge rates and computed flows lag observed flows by about 30 minutes.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1987.tb00810.x","issn":"00431370","usgsCitation":"Jeffcoat, H.H., and Jennings, M.E., 1987, Computation of unsteady flows in the Alabama River: Water Resources Bulletin, v. 23, no. 2, p. 313-315, https://doi.org/10.1111/j.1752-1688.1987.tb00810.x.","productDescription":"3 p.","startPage":"313","endPage":"315","costCenters":[],"links":[{"id":225787,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alabama","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -86.43218994140625,\n 32.36372329228304\n ],\n [\n -85.79498291015624,\n 32.36372329228304\n ],\n [\n -85.79498291015624,\n 32.72375394304274\n ],\n [\n -86.43218994140625,\n 32.72375394304274\n ],\n [\n -86.43218994140625,\n 32.36372329228304\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"23","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"5059f2dce4b0c8380cd4b438","contributors":{"authors":[{"text":"Jeffcoat, Hillary H.","contributorId":18401,"corporation":false,"usgs":true,"family":"Jeffcoat","given":"Hillary","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":368758,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jennings, Marshall E.","contributorId":55813,"corporation":false,"usgs":true,"family":"Jennings","given":"Marshall","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":368759,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014681,"text":"70014681 - 1987 - Tidal and tidally averaged circulation characteristics of Suisun Bay, California","interactions":[],"lastModifiedDate":"2018-02-21T11:07:16","indexId":"70014681","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Tidal and tidally averaged circulation characteristics of Suisun Bay, California","docAbstract":"Availability of extensive field data permitted realistic calibration and validation of a hydrodynamic model of tidal circulation and salt transport for Suisun Bay, California. Suisun Bay is a partially mixed embayment of northern San Francisco Bay located just seaward of the Sacramento-San Joaquin Delta. The model employs a variant of an alternating direction implicit finite-difference method to solve the hydrodynamic equations and an Eulerian-Lagrangian method to solve the salt transport equation. An upwind formulation of the advective acceleration terms of the momentum equations was employed to avoid oscillations in the tidally averaged velocity field produced by central spatial differencing of these terms. Simulation results of tidal circulation and salt transport demonstrate that tides and the complex bathymetry determine the patterns of tidal velocities and that net changes in the salinity distribution over a few tidal cycles are small despite large changes during each tidal cycle. Computations of tidally averaged circulation suggest that baroclinic and wind effects are important influences on tidally averaged circulation during low freshwater-inflow conditions. Exclusion of baroclinic effects would lead to overestimation of freshwater inflow by several hundred m3/s for a fixed set of model boundary conditions. Likewise, exclusion of wind would cause an underestimation of flux rates between shoals and channels by 70–100%.
Two natural lignins, one from a gymnosperm wood the other from angiosperm wood, were examined by conventional solid-state and dipolar dephasing 13C nuclear magnetic resonance (NMR) techniques. The results obtained from both techniques show that the structure of natural lignins is consistent with models of softwood and hardwood lignin. The dipolar dephasing NMR data provide a measure of the degree of substitution on aromatic rings which is consistent with the models.
","language":"English","publisher":"Elsevier","doi":"10.1016/0146-6380(87)90049-0","usgsCitation":"Hatcher, P.G., 1987, Chemical structural studies of natural lignin by dipolar dephasing solid-state 13C nuclear magnetic resonance: Organic Geochemistry, v. 11, no. 1, p. 31-39, https://doi.org/10.1016/0146-6380(87)90049-0.","productDescription":"9 p.","startPage":"31","endPage":"39","costCenters":[],"links":[{"id":225881,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia, Washington","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-75.973607,37.835817],[-75.982158,37.806226],[-75.9983,37.812626],[-75.999658,37.848198],[-75.973607,37.835817]]],[[[-76.029405,37.953776],[-75.994739,37.953501],[-76.032491,37.915008],[-76.04653,37.953586],[-76.029405,37.953776]]],[[[-75.242266,38.027209],[-75.359036,37.864143],[-75.437868,37.872324],[-75.514921,37.799149],[-75.581333,37.683593],[-75.610808,37.605909],[-75.612237,37.585602],[-75.594044,37.569698],[-75.666178,37.472124],[-75.665957,37.439209],[-75.720739,37.373129],[-75.735829,37.335426],[-75.778817,37.297176],[-75.798448,37.296285],[-75.790386,37.231225],[-75.800468,37.201029],[-75.897298,37.118037],[-75.912308,37.115154],[-75.92552,37.133601],[-75.97043,37.118608],[-76.025753,37.257407],[-76.018645,37.31782],[-75.987122,37.368548],[-75.981624,37.434116],[-75.960877,37.467562],[-75.924756,37.600215],[-75.868481,37.668224],[-75.859262,37.703111],[-75.837685,37.712985],[-75.803041,37.762464],[-75.818125,37.791698],[-75.784599,37.806826],[-75.743097,37.806656],[-75.689837,37.861817],[-75.687584,37.88634],[-75.709626,37.900622],[-75.757694,37.903912],[-75.712065,37.936082],[-75.693942,37.930362],[-75.669711,37.950796],[-75.647606,37.947027],[-75.648229,37.966775],[-75.625612,37.9898],[-75.242266,38.027209]]],[[[-77.041898,38.741514],[-77.053199,38.709915],[-77.079499,38.709515],[-77.132501,38.673816],[-77.1302,38.635017],[-77.202002,38.617217],[-77.216303,38.637817],[-77.246704,38.635217],[-77.247003,38.590618],[-77.26443,38.582845],[-77.26083,38.56533],[-77.310334,38.493926],[-77.32544,38.44885],[-77.310719,38.397669],[-77.317288,38.383576],[-77.279633,38.339444],[-77.240072,38.331598],[-77.162692,38.345994],[-77.138224,38.367917],[-77.08481,38.368297],[-77.043526,38.400548],[-77.011827,38.374554],[-77.030683,38.311623],[-76.96215,38.256486],[-76.962311,38.214075],[-76.838795,38.163476],[-76.760241,38.166581],[-76.721722,38.137635],[-76.701297,38.155718],[-76.613939,38.148587],[-76.600937,38.110084],[-76.543155,38.076971],[-76.516547,38.026566],[-76.469343,38.013544],[-76.416299,37.966828],[-76.343848,37.947345],[-76.236725,37.889174],[-76.251358,37.833072],[-76.275178,37.812664],[-76.293525,37.822717],[-76.307482,37.81235],[-76.312858,37.720338],[-76.300067,37.695364],[-76.339892,37.655966],[-76.292534,37.636098],[-76.279447,37.618225],[-76.36232,37.610368],[-76.472392,37.665772],[-76.489576,37.666201],[-76.510187,37.642324],[-76.536548,37.663574],[-76.537228,37.698892],[-76.584289,37.76889],[-76.651413,37.796239],[-76.680197,37.825654],[-76.701606,37.822677],[-76.747552,37.875864],[-76.784618,37.869569],[-76.723863,37.788503],[-76.689773,37.78519],[-76.680922,37.759647],[-76.663887,37.751887],[-76.61971,37.744795],[-76.61997,37.731271],[-76.597213,37.717269],[-76.574049,37.646781],[-76.542666,37.616857],[-76.435474,37.612807],[-76.410781,37.581815],[-76.300144,37.561734],[-76.360474,37.51924],[-76.32947,37.49492],[-76.306952,37.497488],[-76.293599,37.516499],[-76.265056,37.481365],[-76.245283,37.386839],[-76.275552,37.309964],[-76.337476,37.364014],[-76.415167,37.402133],[-76.418176,37.385064],[-76.445333,37.36646],[-76.406388,37.332924],[-76.381075,37.28534],[-76.352556,37.278334],[-76.429141,37.25331],[-76.48284,37.254831],[-76.50364,37.233856],[-76.471799,37.216016],[-76.394132,37.22515],[-76.394756,37.157568],[-76.348658,37.170655],[-76.334017,37.144223],[-76.292344,37.126615],[-76.271262,37.084544],[-76.304272,37.001378],[-76.34011,37.015212],[-76.411768,36.962847],[-76.428869,36.969947],[-76.464471,37.027547],[-76.518242,37.055351],[-76.526203,37.077773],[-76.564219,37.077507],[-76.618252,37.119347],[-76.622252,37.142146],[-76.604476,37.160034],[-76.623292,37.198738],[-76.649869,37.220914],[-76.730951,37.213813],[-76.75047,37.190098],[-76.780532,37.209336],[-76.802511,37.198308],[-76.73032,37.145395],[-76.715295,37.148035],[-76.685614,37.198851],[-76.663774,37.173875],[-76.671588,37.14206],[-76.656894,37.109843],[-76.669822,37.06426],[-76.662558,37.045748],[-76.586491,37.02874],[-76.500355,36.965212],[-76.469914,36.882898],[-76.454692,36.884077],[-76.441605,36.906116],[-76.387567,36.899547],[-76.385867,36.923247],[-76.333158,36.917293],[-76.327365,36.959447],[-76.285063,36.968747],[-76.22166,36.939547],[-76.095508,36.908817],[-76.033454,36.931946],[-75.996252,36.922047],[-75.94955,36.76115],[-75.867044,36.550754],[-80.122183,36.542646],[-81.677535,36.588117],[-81.6469,36.611918],[-81.922644,36.616213],[-81.934144,36.594213],[-83.670128,36.600764],[-83.648314,36.622683],[-83.529612,36.666184],[-83.423707,36.667385],[-83.307103,36.711387],[-83.136395,36.743088],[-83.125728,36.761276],[-83.131694,36.781488],[-83.07559,36.850589],[-83.006086,36.847889],[-82.878569,36.889585],[-82.858635,36.927785],[-82.864909,36.97901],[-82.726279,37.042098],[-82.722097,37.120168],[-82.498858,37.227044],[-82.355343,37.26522],[-81.968297,37.537798],[-81.946022,37.531742],[-81.944756,37.513657],[-81.926391,37.514207],[-81.992916,37.482969],[-81.995649,37.469833],[-81.987006,37.454878],[-81.938843,37.440463],[-81.923481,37.411379],[-81.936744,37.38073],[-81.928497,37.360645],[-81.860267,37.315715],[-81.853551,37.287701],[-81.761752,37.275713],[-81.739277,37.238837],[-81.719554,37.237785],[-81.678603,37.202467],[-81.5536,37.208443],[-81.508786,37.232564],[-81.498874,37.258025],[-81.483559,37.250604],[-81.416663,37.273214],[-81.394287,37.316411],[-81.374455,37.318614],[-81.366315,37.335927],[-81.225104,37.234874],[-81.112596,37.278497],[-80.979589,37.302279],[-80.966556,37.292158],[-80.900535,37.315],[-80.849451,37.346909],[-80.883248,37.383933],[-80.859563,37.429558],[-80.784188,37.394587],[-80.770082,37.372363],[-80.552036,37.473563],[-80.515139,37.478566],[-80.492981,37.457749],[-80.494867,37.43507],[-80.475601,37.422949],[-80.366838,37.484879],[-80.309331,37.50288],[-80.282385,37.533517],[-80.330306,37.536244],[-80.314464,37.54412],[-80.328504,37.564315],[-80.240272,37.606961],[-80.220984,37.627767],[-80.270352,37.648929],[-80.296138,37.691783],[-80.253077,37.725899],[-80.257411,37.756084],[-80.216498,37.776445],[-80.227092,37.798886],[-80.179391,37.839751],[-80.162202,37.875122],[-80.117747,37.89772],[-80.002507,37.992767],[-79.954369,38.080397],[-79.92633,38.107151],[-79.944843,38.131585],[-79.918662,38.15479],[-79.917061,38.183741],[-79.790134,38.267654],[-79.810115,38.305037],[-79.764432,38.356514],[-79.725804,38.366128],[-79.72635,38.38707],[-79.689675,38.431439],[-79.696959,38.484574],[-79.663474,38.514117],[-79.669275,38.549516],[-79.649075,38.591515],[-79.53687,38.550917],[-79.476638,38.457228],[-79.312276,38.411876],[-79.280149,38.42076],[-79.210591,38.492913],[-79.205859,38.524521],[-79.170958,38.56812],[-79.131057,38.653217],[-79.092955,38.659517],[-79.085455,38.724614],[-79.057554,38.760213],[-79.055654,38.783013],[-79.027253,38.792113],[-78.998171,38.847353],[-78.869276,38.762991],[-78.786025,38.887187],[-78.718482,38.934267],[-78.718647,38.904561],[-78.69738,38.915602],[-78.629553,38.980866],[-78.601655,38.964603],[-78.554919,39.015124],[-78.571901,39.031995],[-78.403697,39.167451],[-78.436662,39.196658],[-78.399669,39.243874],[-78.414204,39.26391],[-78.338958,39.349889],[-78.362267,39.357784],[-78.343214,39.388807],[-78.359352,39.412534],[-78.346718,39.427618],[-78.347087,39.466012],[-77.828157,39.132329],[-77.730047,39.315666],[-77.675846,39.324192],[-77.615939,39.302722],[-77.56321,39.303903],[-77.540581,39.264947],[-77.486813,39.247586],[-77.457943,39.222023],[-77.478596,39.189168],[-77.516426,39.170891],[-77.519929,39.120925],[-77.4858,39.109303],[-77.452827,39.072468],[-77.340287,39.062991],[-77.293105,39.046508],[-77.248403,39.026909],[-77.255703,39.002409],[-77.234803,38.97631],[-77.137701,38.95531],[-77.1034,38.912911],[-77.070099,38.900711],[-77.040599,38.871212],[-77.031698,38.850512],[-77.044899,38.834712],[-77.041898,38.741514]]],[[[-122.519535,48.288314],[-122.551793,48.281512],[-122.584086,48.297987],[-122.618466,48.294159],[-122.623779,48.269431],[-122.652639,48.265081],[-122.668385,48.223967],[-122.63126,48.220686],[-122.588138,48.18594],[-122.558205,48.119579],[-122.571615,48.105113],[-122.54512,48.05255],[-122.516314,48.057181],[-122.511081,48.075301],[-122.525422,48.096537],[-122.513276,48.097538],[-122.491104,48.094242],[-122.431266,48.045001],[-122.376259,48.034457],[-122.373263,48.000791],[-122.349597,47.958796],[-122.380497,47.904023],[-122.431035,47.914732],[-122.445519,47.930226],[-122.446682,47.963155],[-122.47266,47.988449],[-122.546824,47.967215],[-122.541564,47.992998],[-122.607342,48.030992],[-122.593621,48.0472],[-122.614028,48.072788],[-122.598301,48.110616],[-122.609568,48.15186],[-122.633167,48.163281],[-122.677337,48.154587],[-122.693084,48.181509],[-122.770045,48.224395],[-122.72259,48.304268],[-122.673731,48.354683],[-122.664659,48.401508],[-122.627809,48.3972],[-122.60198,48.409907],[-122.585038,48.395166],[-122.585162,48.353304],[-122.506568,48.310041],[-122.519535,48.288314]]],[[[-122.474684,47.511068],[-122.452399,47.503471],[-122.460027,47.48686],[-122.433385,47.46643],[-122.437656,47.407424],[-122.373628,47.388718],[-122.437809,47.365606],[-122.453997,47.343337],[-122.51885,47.33332],[-122.526733,47.398581],[-122.513328,47.449106],[-122.474684,47.511068]]],[[[-122.695907,48.737273],[-122.663259,48.697077],[-122.618225,48.670721],[-122.609576,48.645018],[-122.673538,48.680809],[-122.691795,48.711498],[-122.718833,48.716818],[-122.715709,48.748672],[-122.695907,48.737273]]],[[[-123.035393,49.002154],[-123.028091,48.973943],[-123.083834,48.976139],[-123.090546,49.001976],[-123.035393,49.002154]]],[[[-122.800217,48.60169],[-122.801096,48.585425],[-122.771206,48.562426],[-122.788503,48.530393],[-122.779124,48.508911],[-122.816332,48.487841],[-122.81973,48.458843],[-122.802509,48.433098],[-122.812208,48.422326],[-122.874135,48.418196],[-122.893646,48.422655],[-122.889016,48.435947],[-122.928004,48.439966],[-122.91646,48.453263],[-122.926901,48.460874],[-122.962009,48.451161],[-123.039156,48.460003],[-123.119451,48.492576],[-123.163234,48.529544],[-123.173061,48.579086],[-123.203026,48.596178],[-123.178425,48.622115],[-123.107362,48.622451],[-123.101552,48.59782],[-123.048403,48.569216],[-122.987296,48.561895],[-122.995026,48.578162],[-123.034101,48.591767],[-123.024902,48.594484],[-123.048652,48.621002],[-122.941316,48.702904],[-122.894599,48.71503],[-122.743049,48.661991],[-122.809622,48.619035],[-122.800217,48.60169]]],[[[-123.197953,48.68466],[-123.14799,48.668001],[-123.106165,48.633473],[-123.237148,48.683466],[-123.197953,48.68466]]],[[[-123.025486,48.717966],[-123.009787,48.722291],[-123.005086,48.694342],[-123.021215,48.681416],[-123.042337,48.675663],[-123.035672,48.68535],[-123.047058,48.695772],[-123.070427,48.699971],[-123.025486,48.717966]]],[[[-122.649405,48.588457],[-122.578856,48.54813],[-122.572967,48.529028],[-122.649256,48.528769],[-122.649405,48.588457]]],[[[-122.714512,48.60878],[-122.670638,48.568812],[-122.68944,48.543903],[-122.717278,48.539739],[-122.73944,48.573893],[-122.714512,48.60878]]],[[[-122.699266,48.621115],[-122.674173,48.629944],[-122.657016,48.609891],[-122.699266,48.621115]]],[[[-122.418268,47.320614],[-122.324833,47.348521],[-122.328434,47.400621],[-122.348035,47.415921],[-122.355135,47.441921],[-122.383136,47.450521],[-122.361336,47.481421],[-122.396538,47.51522],[-122.398338,47.55012],[-122.421139,47.57602],[-122.387139,47.59572],[-122.370167,47.583087],[-122.339513,47.599113],[-122.429841,47.658919],[-122.37314,47.729219],[-122.396422,47.777927],[-122.394944,47.803318],[-122.33595,47.852306],[-122.307048,47.949117],[-122.230046,47.970917],[-122.224979,48.016626],[-122.343241,48.097631],[-122.363842,48.12393],[-122.362044,48.187568],[-122.395499,48.228551],[-122.449605,48.232598],[-122.441731,48.211776],[-122.478535,48.188087],[-122.479008,48.175703],[-122.358375,48.056133],[-122.377114,48.057568],[-122.4675,48.130353],[-122.486736,48.12095],[-122.512031,48.133931],[-122.53722,48.183745],[-122.530996,48.249821],[-122.480925,48.251706],[-122.466803,48.269604],[-122.406516,48.25183],[-122.371693,48.287839],[-122.408718,48.326413],[-122.533452,48.383409],[-122.554536,48.40604],[-122.557298,48.444438],[-122.649839,48.408526],[-122.678928,48.439466],[-122.654844,48.454087],[-122.657753,48.47294],[-122.689121,48.476849],[-122.700603,48.457632],[-122.710362,48.461584],[-122.712981,48.47879],[-122.684521,48.509123],[-122.606961,48.522152],[-122.568071,48.50821],[-122.537355,48.466749],[-122.500721,48.460887],[-122.471832,48.470724],[-122.498463,48.556206],[-122.534719,48.574246],[-122.495904,48.575927],[-122.482406,48.559653],[-122.44456,48.570115],[-122.425271,48.599522],[-122.500308,48.656163],[-122.519172,48.713095],[-122.490401,48.751128],[-122.535803,48.776128],[-122.596844,48.771492],[-122.637146,48.735708],[-122.612562,48.714932],[-122.605733,48.701066],[-122.615169,48.693839],[-122.673472,48.733082],[-122.645743,48.781538],[-122.693683,48.804475],[-122.709815,48.786205],[-122.717073,48.84719],[-122.793175,48.892927],[-122.751289,48.911239],[-122.746596,48.930731],[-122.822464,48.944911],[-122.75802,49.002357],[-117.032351,48.999188],[-117.042657,47.760857],[-117.034696,46.418318],[-117.062748,46.353624],[-117.027744,46.338751],[-117.020663,46.314793],[-116.98463,46.292705],[-116.987391,46.272865],[-116.955264,46.23088],[-116.965841,46.203417],[-116.921258,46.164795],[-116.955263,46.102237],[-116.981962,46.084915],[-116.942656,46.061],[-116.91868,45.999875],[-118.987129,45.999855],[-119.027056,45.969134],[-119.12612,45.932859],[-119.19553,45.92787],[-119.25715,45.939926],[-119.487829,45.906307],[-119.571584,45.925456],[-119.600549,45.919581],[-119.669877,45.856867],[-119.965744,45.824365],[-120.170453,45.761951],[-120.210754,45.725951],[-120.482362,45.694449],[-120.559465,45.738348],[-120.634968,45.745847],[-120.68937,45.715847],[-120.855674,45.671545],[-120.895575,45.642945],[-120.943977,45.656445],[-121.06437,45.652549],[-121.145534,45.607886],[-121.196556,45.616689],[-121.215779,45.671238],[-121.33777,45.704949],[-121.423592,45.69399],[-121.533106,45.726541],[-121.707358,45.694809],[-121.811304,45.706761],[-121.867167,45.693277],[-121.908267,45.654399],[-121.979797,45.624839],[-122.101675,45.583516],[-122.183695,45.577696],[-122.262625,45.544321],[-122.331502,45.548241],[-122.380302,45.575941],[-122.438674,45.563585],[-122.675008,45.618039],[-122.76381,45.657138],[-122.774511,45.680437],[-122.761451,45.759163],[-122.795605,45.81],[-122.785026,45.867699],[-122.81151,45.912725],[-122.813998,45.960984],[-122.878092,46.031281],[-122.904119,46.083734],[-123.004233,46.133823],[-123.115904,46.185268],[-123.166414,46.188973],[-123.280166,46.144843],[-123.371433,46.146372],[-123.430847,46.181827],[-123.427629,46.229348],[-123.474844,46.267831],[-123.547659,46.259109],[-123.669501,46.266832],[-123.680574,46.296025],[-123.700764,46.305278],[-123.766682,46.273499],[-123.806139,46.283588],[-123.875525,46.239787],[-123.919581,46.251217],[-123.974509,46.303063],[-124.001264,46.31326],[-124.020551,46.315737],[-124.044018,46.275925],[-124.080671,46.267239],[-124.057425,46.409315],[-124.069583,46.630651],[-124.048444,46.645827],[-124.035874,46.630822],[-124.052708,46.622796],[-124.023566,46.582559],[-124.026032,46.462978],[-123.990615,46.463019],[-123.988386,46.497008],[-123.97083,46.47537],[-123.943667,46.477197],[-123.894254,46.537028],[-123.928861,46.588875],[-123.955556,46.60357],[-123.960642,46.636364],[-123.921913,46.650262],[-123.923269,46.672708],[-123.851356,46.70256],[-123.84621,46.716795],[-123.898641,46.750205],[-123.916371,46.741322],[-123.916874,46.726739],[-123.974994,46.733391],[-123.966886,46.705184],[-124.003458,46.702337],[-124.092176,46.741624],[-124.108078,46.836388],[-124.138225,46.905534],[-124.110641,46.91252],[-124.093392,46.901168],[-124.089286,46.867716],[-124.073113,46.861493],[-124.055085,46.870429],[-124.049279,46.891253],[-123.985082,46.921916],[-123.86018,46.948556],[-123.898245,46.971927],[-124.012218,46.985176],[-124.019727,46.991189],[-124.005248,47.003915],[-124.026345,47.030187],[-124.122057,47.04165],[-124.151288,47.021112],[-124.124386,46.94387],[-124.180111,46.926357],[-124.169113,46.994508],[-124.182802,47.134041],[-124.236349,47.287287],[-124.271193,47.305025],[-124.299943,47.34836],[-124.319379,47.355559],[-124.355955,47.545698],[-124.425195,47.738434],[-124.453927,47.765334],[-124.47657,47.769671],[-124.489737,47.816988],[-124.539927,47.836967],[-124.559034,47.863085],[-124.625512,47.887963],[-124.672427,47.964414],[-124.696542,48.069274],[-124.687101,48.098657],[-124.731746,48.169997],[-124.696111,48.198599],[-124.690389,48.219745],[-124.705031,48.238774],[-124.684677,48.255228],[-124.65894,48.331057],[-124.730863,48.3762],[-124.716947,48.389776],[-124.599278,48.381035],[-124.395593,48.288772],[-124.361351,48.287582],[-124.272017,48.25441],[-124.238582,48.262471],[-124.101773,48.216883],[-124.107215,48.200082],[-124.050734,48.177747],[-123.981032,48.164761],[-123.858821,48.154273],[-123.672445,48.162715],[-123.628819,48.139279],[-123.590839,48.134949],[-123.551131,48.151382],[-123.507235,48.131807],[-123.440128,48.142014],[-123.441972,48.124259],[-123.424668,48.118065],[-123.332699,48.11297],[-123.239129,48.118217],[-123.133445,48.177276],[-123.143229,48.156633],[-123.06621,48.120469],[-123.038727,48.081138],[-122.929095,48.096244],[-122.917942,48.091535],[-122.927975,48.06665],[-122.877641,48.047025],[-122.849273,48.053808],[-122.878255,48.076072],[-122.876282,48.110877],[-122.833173,48.134406],[-122.760448,48.14324],[-122.748911,48.117026],[-122.801399,48.087561],[-122.770496,48.047897],[-122.74229,48.049324],[-122.747389,48.070795],[-122.733257,48.091232],[-122.68724,48.101662],[-122.669868,48.017217],[-122.723374,48.008095],[-122.718082,47.987739],[-122.6788,47.96793],[-122.681924,47.936415],[-122.651063,47.920985],[-122.646494,47.894771],[-122.610341,47.887343],[-122.650083,47.86386],[-122.69376,47.868002],[-122.683742,47.838773],[-122.748061,47.800546],[-122.758498,47.746036],[-122.781682,47.70392],[-122.811929,47.679861],[-122.832139,47.695511],[-122.790619,47.792597],[-122.812616,47.840029],[-122.820178,47.835904],[-122.815027,47.807493],[-122.845612,47.777474],[-122.896524,47.674838],[-122.97244,47.6149],[-123.106486,47.45817],[-123.15598,47.355745],[-123.140169,47.347496],[-123.111298,47.362619],[-123.120234,47.39149],[-122.967284,47.585685],[-122.856611,47.649615],[-122.754186,47.671612],[-122.740159,47.736228],[-122.714801,47.768176],[-122.608105,47.856728],[-122.573672,47.857582],[-122.588235,47.912923],[-122.620316,47.931553],[-122.603861,47.940478],[-122.592184,47.922519],[-122.527593,47.905882],[-122.506122,47.831745],[-122.482529,47.815511],[-122.495458,47.786692],[-122.470333,47.757109],[-122.488491,47.743605],[-122.554454,47.745704],[-122.543161,47.710941],[-122.504604,47.699136],[-122.518277,47.65132],[-122.493205,47.635122],[-122.49824,47.598242],[-122.479089,47.583654],[-122.543118,47.556326],[-122.547207,47.528257],[-122.494882,47.510265],[-122.530514,47.469041],[-122.531889,47.428827],[-122.551136,47.394456],[-122.537044,47.375896],[-122.573739,47.318419],[-122.547521,47.285344],[-122.589454,47.227618],[-122.611464,47.2181],[-122.697378,47.283969],[-122.671256,47.343774],[-122.632463,47.376394],[-122.671486,47.366876],[-122.725738,47.33047],[-122.749621,47.276408],[-122.644182,47.209177],[-122.711997,47.127681],[-122.771619,47.167109],[-122.832799,47.243412],[-122.799025,47.289306],[-122.796646,47.341654],[-122.821868,47.363069],[-122.822344,47.319763],[-122.863732,47.270221],[-122.838298,47.208353],[-122.858735,47.167955],[-122.814238,47.179482],[-122.775056,47.123114],[-122.721437,47.103179],[-122.67813,47.103866],[-122.614855,47.169143],[-122.590829,47.178107],[-122.527586,47.291531],[-122.547747,47.316403],[-122.4442,47.266723],[-122.409199,47.288556],[-122.444635,47.300421],[-122.418268,47.320614]]]]},\"properties\":{\"name\":\"Virginia\",\"nation\":\"USA \"}}]}","volume":"11","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f596e4b0c8380cd4c2d4","contributors":{"authors":[{"text":"Hatcher, Patrick G.","contributorId":93625,"corporation":false,"usgs":true,"family":"Hatcher","given":"Patrick","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":367870,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014731,"text":"70014731 - 1987 - Determination of the rare-earth elements in geological materials by inductively coupled plasma mass spectrometry","interactions":[],"lastModifiedDate":"2023-03-09T17:51:58.062311","indexId":"70014731","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Determination of the rare-earth elements in geological materials by inductively coupled plasma mass spectrometry","docAbstract":"A method of analysis of geological materials for the determination of the rare-earth elements using the Inductively coupled plasma mass spectrometric technique (ICP-MS) has been developed. Instrumental parameters and factors affecting analytical results have been first studied and then optimized. Samples are analyzed directly following an acid digestion, without the need for separation or preconcentration with limits of detection of 2-11 ng/g, precision of ?? 2.5% relative standard deviation, and accuracy comparable to inductively coupled plasma emission spectrometry and instrumental neutron activation analysis. A commercially available ICP-MS instrument is used with modifications to the sample introduction system, torch, and sampler orifice to reduce the effects of high salt content of sample solutions prepared from geologic materials. Corrections for isobaric interferences from oxide ions and other diatomic and triatomic ions are made mathematically. Special internal standard procedures are used to compensate for drift in metahmetal oxide ratios and sensitivity. Reference standard values are used to verify the accuracy and utility of the method.","language":"English","publisher":"ACS Publications","doi":"10.1021/ac00135a018","usgsCitation":"Lichte, F., Meier, A.L., and Crock, J.G., 1987, Determination of the rare-earth elements in geological materials by inductively coupled plasma mass spectrometry: Analytical Chemistry, v. 59, no. 8, p. 1150-1157, https://doi.org/10.1021/ac00135a018.","productDescription":"8 p.","startPage":"1150","endPage":"1157","numberOfPages":"8","costCenters":[],"links":[{"id":226040,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"59","issue":"8","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"5059ffdae4b0c8380cd4f41d","contributors":{"authors":[{"text":"Lichte, F.E.","contributorId":99108,"corporation":false,"usgs":true,"family":"Lichte","given":"F.E.","affiliations":[],"preferred":false,"id":369151,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meier, Allen L.","contributorId":14384,"corporation":false,"usgs":true,"family":"Meier","given":"Allen","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":369150,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crock, James G. jcrock@usgs.gov","contributorId":200,"corporation":false,"usgs":true,"family":"Crock","given":"James","email":"jcrock@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":369149,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014882,"text":"70014882 - 1987 - Pure shear and simple shear calcite textures. Comparison of experimental, theoretical and natural data","interactions":[],"lastModifiedDate":"2024-05-13T23:48:12.748205","indexId":"70014882","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2468,"text":"Journal of Structural Geology","active":true,"publicationSubtype":{"id":10}},"title":"Pure shear and simple shear calcite textures. Comparison of experimental, theoretical and natural data","docAbstract":"The pattern of lattice preferred orientation (texture) in deformed rocks is an expression of the strain path and the acting deformation mechanisms. A first indication about the strain path is given by the symmetry of pole figures: coaxial deformation produces orthorhombic pole figures, while non-coaxial deformation yields monoclinic or triclinic pole figures. More quantitative information about the strain history can be obtained by comparing natural textures with experimental ones and with theoretical models. For this comparison, a representation in the sensitive three-dimensional orientation distribution space is extremely important and efforts are made to explain this concept. We have been investigating differences between pure shear and simple shear deformation incarbonate rocks and have found considerable agreement between textures produced in plane strain experiments and predictions based on the Taylor model. We were able to simulate the observed changes with strain history (coaxial vs non-coaxial) and the profound texture transition which occurs with increasing temperature. Two natural calcite textures were then selected which we interpreted by comparing them with the experimental and theoretical results. A marble from the Santa Rosa mylonite zone in southern California displays orthorhombic pole figures with patterns consistent with low temperature deformation in pure shear. A limestone from the Tanque Verde detachment fault in Arizona has a monoclinic fabric from which we can interpret that 60% of the deformation occurred by simple shear.
","language":"English","publisher":"Elsevier","issn":"01918141","usgsCitation":"Wenk, H., Takeshita, T., Bechler, E., Erskine, B., and Matthies, S., 1987, Pure shear and simple shear calcite textures. Comparison of experimental, theoretical and natural data: Journal of Structural Geology, v. 9, no. 5-6, p. 731-745.","productDescription":"15 p.","startPage":"731","endPage":"745","numberOfPages":"15","costCenters":[],"links":[{"id":226113,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"5-6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a903be4b0c8380cd7fbf8","contributors":{"authors":[{"text":"Wenk, H.-R.","contributorId":47921,"corporation":false,"usgs":true,"family":"Wenk","given":"H.-R.","email":"","affiliations":[],"preferred":false,"id":369513,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Takeshita, T.","contributorId":46232,"corporation":false,"usgs":true,"family":"Takeshita","given":"T.","email":"","affiliations":[],"preferred":false,"id":369512,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bechler, E.","contributorId":95211,"corporation":false,"usgs":true,"family":"Bechler","given":"E.","email":"","affiliations":[],"preferred":false,"id":369514,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Erskine, B.G.","contributorId":8624,"corporation":false,"usgs":true,"family":"Erskine","given":"B.G.","email":"","affiliations":[],"preferred":false,"id":369510,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Matthies, S.","contributorId":36302,"corporation":false,"usgs":true,"family":"Matthies","given":"S.","email":"","affiliations":[],"preferred":false,"id":369511,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70015194,"text":"70015194 - 1987 - Origin of the lethal gas burst from Lake Monoun, Cameroun","interactions":[],"lastModifiedDate":"2012-03-12T17:19:00","indexId":"70015194","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Origin of the lethal gas burst from Lake Monoun, Cameroun","docAbstract":"On 15 August, 1984, a lethal gas burst issued from a submerged 96-m-deep crater in Lake Monoun in Cameroun, western Africa, killing 37 people. The event was associated with a landslide from the eastern crater rim, which slumped into deep water. Waters below 50 m are anoxic, dominated by high Fe2+ (???600 mg/l) and HCO3- (??? 1900 mg/l), anoxic and supersaturated with siderite, which is a major component of the crater floor sediments. The unusually high Fe2+ levels are attributed to reduction of laterite-derived ferric iron gradually brought into the lake as loess and in river input. Sulfur compounds are below detection limits in both water and gas. Gases effervescing from depressurized deep waters are dominantly CO2 with minor CH4, having ??13C of -7.18 and -54.8 per mil, respectively. Bacterial decomposition of organic matter may account for the methane, but 14C of lake water indicates that only 10% of the carbon is modern, giving an apparent age of 18,000 years. The dominant source of carbon is therefore attributed to long-term emission of CO2 as volcanic exhalation from vents within the crater, which led to gradual build-up of HCO3- in the lake. The density stratification of the lake may have been upset by an earthquake and underwater landslide on 15 August, which triggered overturn of the lake and caused nucleation of CO2 in the deep water. The resultant ebullition of CO2 from deep lake waters led to a gas burst at the surface and locally generated a water wave up to 5 m high. People travelling through the gas cloud were asphyxiated, presumably from CO2, and suffered skin discoloration from unidentified components. ?? 1987.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03770273","usgsCitation":"Sigurdsson, H., Devine, J., Tchua, F., Presser, F., Pringle, M., and Evans, W.C., 1987, Origin of the lethal gas burst from Lake Monoun, Cameroun: Journal of Volcanology and Geothermal Research, v. 31, no. 1-2, p. 1-16.","startPage":"1","endPage":"16","numberOfPages":"16","costCenters":[],"links":[{"id":224409,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7104e4b0c8380cd763e1","contributors":{"authors":[{"text":"Sigurdsson, Haraldur","contributorId":35079,"corporation":false,"usgs":true,"family":"Sigurdsson","given":"Haraldur","email":"","affiliations":[],"preferred":false,"id":370293,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Devine, J.D.","contributorId":95486,"corporation":false,"usgs":true,"family":"Devine","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":370297,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tchua, F.M.","contributorId":48828,"corporation":false,"usgs":true,"family":"Tchua","given":"F.M.","email":"","affiliations":[],"preferred":false,"id":370295,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Presser, F.M.","contributorId":38847,"corporation":false,"usgs":true,"family":"Presser","given":"F.M.","email":"","affiliations":[],"preferred":false,"id":370294,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pringle, M.K.W.","contributorId":67220,"corporation":false,"usgs":true,"family":"Pringle","given":"M.K.W.","email":"","affiliations":[],"preferred":false,"id":370296,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Evans, William C.","contributorId":104903,"corporation":false,"usgs":true,"family":"Evans","given":"William","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":370298,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":1007733,"text":"1007733 - 1987 - Faces from the past: Frederic Morton Chamberlain (1867-1921), pioneer fishery biologist of the American West","interactions":[],"lastModifiedDate":"2023-12-08T11:59:49.83959","indexId":"1007733","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1657,"text":"Fisheries","onlineIssn":"1548-8446","printIssn":"0363-2415","active":true,"publicationSubtype":{"id":10}},"title":"Faces from the past: Frederic Morton Chamberlain (1867-1921), pioneer fishery biologist of the American West","docAbstract":"The life of Frederic Morton Chamberlain (1867–1921) was marked by his many contributions to fishery science. As an assistant with the old U.S. Bureau of Fisheries, he pioneered life history studies of salmon in California and Alaska, and assisted in the collection of hundreds of thousands of natural history specimens from the Pacific Ocean as resident naturalist on the U.S.S. Albatross. He was innovative in the use of field photography in fishery work, and the design and construction of capture nets and collecting gear. His detailed reports were important in documenting the conditions of the native ichthyofauna in Alaska, Arizona, and California at the turn of the century and have been heavily relied upon by subsequent investigators. His ability to design and conduct scientifically justifiable studies to solve fishery problems while under many kinds of hardships is a testament to his background and dedication to the field. He represents the prototype of the modern fishery biologist.
","language":"English","publisher":"Wiley","doi":"10.1577/1548-8446(1987)012<0022:FMCPFB>2.0.CO;2","usgsCitation":"Jennings, M., 1987, Faces from the past: Frederic Morton Chamberlain (1867-1921), pioneer fishery biologist of the American West: Fisheries, v. 12, no. 6, p. 22-29, https://doi.org/10.1577/1548-8446(1987)012<0022:FMCPFB>2.0.CO;2.","productDescription":"8 p.","startPage":"22","endPage":"29","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":130594,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a06e4b07f02db5f8893","contributors":{"authors":[{"text":"Jennings, M.R.","contributorId":18296,"corporation":false,"usgs":true,"family":"Jennings","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":315926,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1007762,"text":"1007762 - 1987 - Power and speed of swimming dolphins","interactions":[],"lastModifiedDate":"2024-06-28T11:23:23.269093","indexId":"1007762","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Power and speed of swimming dolphins","docAbstract":"The belief that dolphins have an extraordinary ability to generate propulsive power or can modify the water flow over their bodies to the low-resistance laminar flow is pervasive in the perception of the animals by the public and by some of the biology communities. I analyzed measured swimming speeds for dolphins of the Stenella-Delphinus morphology. A conservative hydrodynamics model equivalent to 119% of the drag of a rigid fusiform body (the added 19% compensates for the drag induced by propulsion) and a metabolic rate of 13.4 times the projected resting metabolic rate are consistent with measured maximum steady-state speeds. Measured routine swimming speeds are also consistent with this same hydrodynamics model and with metabolic rates for routine activity of other swimming and terrestrial homeotherms. Energy expenditure for swimming dolphins is entirely within expected ranges and no extraordinary mechanisms are necessary to explain observations.
","language":"English","publisher":"Oxford Academic","doi":"10.2307/1381055","usgsCitation":"Hui, C.A., 1987, Power and speed of swimming dolphins: Journal of Mammalogy, v. 68, p. 126-132, https://doi.org/10.2307/1381055.","productDescription":"7 p.","startPage":"126","endPage":"132","numberOfPages":"7","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":129856,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad3e4b07f02db681df5","contributors":{"authors":[{"text":"Hui, Clifford A.","contributorId":68252,"corporation":false,"usgs":true,"family":"Hui","given":"Clifford","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":315987,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014207,"text":"70014207 - 1987 - Sedimentation across the central California oxygen minimum zone: an alternative coastal upwelling sequence","interactions":[],"lastModifiedDate":"2024-05-20T23:21:01.592141","indexId":"70014207","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2450,"text":"Journal of Sedimentary Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentation across the central California oxygen minimum zone: an alternative coastal upwelling sequence","docAbstract":"Distribution, abundance, and diversity of terrigenous, authigenous, and biogenous material provide evidence of the effect of bottom currents and oxygen minimum zone (OMZ) on continental slope sedimentation offshore central California. Box core samples and bottom photographs collected across the oxygen minimum zone of the coastal upwelling system were analyzed for lithologic and biologic trends. Three major OMZ facies are identified, along the upper and lower edges of the OMZ and one at its core. The upper boundary (525 m) of the central California OMZ (< 0.5 ml/liter O 2 ) is characterized by glauconitic gravelly sands relatively depleted in detrital silicates and enriched in carbonate and total organic carbon (TOC). These upper-boundary sands also have a maximum macrofauna density and a high abundance of foraminiferal fragments (> 80% of total forams) with Cassidulina the dominant benthic foraminifer. With increasing water depth, decreasing current speed, and dissolved oxygen content toward the core of the OMZ (750 m), grain size, glauconite, carbonate, TOC, and foraminiferal fragments all decrease as the abundance of mica and detrital silicates increase. The greatest number of genera of benthic foraminifera occurs at the core of the OMZ where their relative concentration is at a minimum and Bolivina is the dominant genus. No heavily calcified macrofauna were found at the core of the OMZ; however, near-surface sediments are highly bioturbated. As the lower boundary (1,025 m) of the OMZ is approached, grain size and abundance of detrital silicates continue to decrease as glauconite disappears. Concomitantly, the relative abundance of mica, carbonate, TOC, siliceous microfauna, benthic foraminifers, and foram fragments increase. The benthic foraminifer population consists largely (> 40%) of Globobulimina and Praeglobobulimina . The lower edge of the OMZ is highlighted by a distinct peak of fecal pellets (25% of sand-size material). Lithofacies and biofacies associated with the OMZ are controlled by an interplay of oceanic circulation, dissolved oxygen concentrations, and possibly by increased biological activity within the OMZ edge environment and slight changes in the slope gradient. Recognition of key lithofacies and biofacies trends may prove to be powerful paleoenvironmental/paleoceanographic indicators and may be useful in identifying ancient zones of upwelling analogous to the modern central California system where phosphorites, organic-rich shales, and/or chert are absent.
This book was written 'to provide an up-to-date data bank from which those wishing to construct models concerned with the evolution of Africa .... can draw.' As such, it attempts a survey of 'integrated geology and geochronology' of the African continent throughout the Precambrian and into the Phanerozoic. Political and language divisions often hinder the synthesis of continent-wide data, therefore, this well-indexed inventory of selected data and synthesis of present geochronological knowledge for Africa as a whole provides an important reference for researchers and explorationists, many of whom have limited access to complete collections of the geological literature of Africa.
","language":"English","publisher":"Elsevier","doi":"10.1016/0301-9268(87)90090-8","usgsCitation":"Wilson, F.H., 1987, [Book review] The geochronology and evolution of Africa: Precambrian Research, v. 36, no. 2, p. 181-182, https://doi.org/10.1016/0301-9268(87)90090-8.","productDescription":"2 p.","startPage":"181","endPage":"182","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337397,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Africa","volume":"36","issue":"2","publicComments":"Review of The geochronology and evolution of Africa: L. Cahen, N.J. Snelling, J. Delhal and J.R. Vail, with the collaboration of M. Bonhomme and D. Ledent. Oxford Univ. Press, Oxford, 1984, xiii+512pp., £60.00 hardcover.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c952e4b0f37a93ee9b90","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":682537,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70171389,"text":"70171389 - 1987 - Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence","interactions":[],"lastModifiedDate":"2016-05-31T09:33:19","indexId":"70171389","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","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":"Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence","docAbstract":"Regression models to predict baseflow alkalinity from basin hydrogeology were developed and verified for headwater streams on the Laurel Hill anticline in southwestern Pennsylvania. Predicted baseflow alkalinities were then used to estimate sensitivity to acidification and presence of trout (Salvelinus fontinalis) populations for 61 headwater streams. Sensitivity classifications were verified by surveying trout populations. Geologic variables relating to the carbonate rock burial depth, extent of carbonate rock recharge areas, and length of stream channel flowing through effluent carbonate rock outcrops were much more useful in predicting baseflow alkalinity than areal extent of carbonate rocks. Baseflow alkalinity was not well related to status of trout populations on these anticlinal basins, especially on noneffluent basins where bedrock dip exceeded surface slope.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1987.tb00781.x","usgsCitation":"DeWalle, D.R., Dinicola, R., and Sharpe, W.E., 1987, Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence: Journal of the American Water Resources Association, v. 23, no. 1, p. 29-35, https://doi.org/10.1111/j.1752-1688.1987.tb00781.x.","productDescription":"7 p.","startPage":"29","endPage":"35","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":321870,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"574eb5dbe4b0ee97d51a83f0","contributors":{"authors":[{"text":"DeWalle, David R.","contributorId":23291,"corporation":false,"usgs":true,"family":"DeWalle","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":630842,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dinicola, Richard S. 0000-0003-4222-294X dinicola@usgs.gov","orcid":"https://orcid.org/0000-0003-4222-294X","contributorId":352,"corporation":false,"usgs":true,"family":"Dinicola","given":"Richard S.","email":"dinicola@usgs.gov","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":630843,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sharpe, William E.","contributorId":169553,"corporation":false,"usgs":false,"family":"Sharpe","given":"William","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":630844,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70185923,"text":"70185923 - 1987 - An empirical model for estimating phytoplankton productivity in estuaries","interactions":[],"lastModifiedDate":"2020-01-17T17:27:17","indexId":"70185923","displayToPublicDate":"1987-01-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"An empirical model for estimating phytoplankton productivity in estuaries","docAbstract":"e have previously shown that primary productivity in San Francisco Bay, USA, is highly correlated with phytoplankton biomass B (chlorophyll a concentration) and an index of light avallability in the photic zone, 2, I, (photic depth times surface irradiance). To test the generality of this relation, we compiled data from San Francisco Bay and 5 other USA estuarine systems (Neuse and South Rivers, Puget Sound, Delaware Bay and Hudson River Plume), and regressed daily produclvity J' P (mg C m-2 d-') against the composite parameter B Z, I,. Regressions for each estuary were significant and typically over 80 % of the varialon in P was correlated with variations in B Z,I,. Moreover, the pooled data (n = 211) from 4 estuaries where methodologies were comparable fell along one regression line (r2= 0.82), indicating that primary productivity can be estimated in a diversity of estuarine waters from simple measures of phytoplankton biomass and hght availability. This implies that physiological variabhty (e. g. responses to variations in nutrient availabhty, temperature, sahnity, photoperiod) is a secondary control on phytoplankton production in nutrient-rich estuaries, and that one empirical function can be used to estimate seasonal variations in productivity or to map productivity along estuarine gradients of phytoplankton biomass and turbidity.
","language":"English","publisher":"Inter-Research","usgsCitation":"Cole, B., and Cloern, J., 1987, An empirical model for estimating phytoplankton productivity in estuaries: Marine Ecology Progress Series, v. 396, p. 299-305.","productDescription":"7 p. ","startPage":"299","endPage":"305","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338665,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"396","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58dcc822e4b02ff32c68575e","contributors":{"authors":[{"text":"Cole, B.E.","contributorId":66268,"corporation":false,"usgs":true,"family":"Cole","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":687099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cloern, J. E.","contributorId":59453,"corporation":false,"usgs":true,"family":"Cloern","given":"J. E.","affiliations":[],"preferred":false,"id":687100,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199577,"text":"70199577 - 1987 - Calculation of solar radiation in mountainous terrain","interactions":[],"lastModifiedDate":"2018-09-20T20:59:25","indexId":"70199577","displayToPublicDate":"1986-07-23T20:58:53","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":681,"text":"Agricultural and Forest Meteorology","active":true,"publicationSubtype":{"id":10}},"title":"Calculation of solar radiation in mountainous terrain","docAbstract":"A study was performed to assess the accuracy of a daily solar radiation model for horizontal or sloping sites in terrain where surrounding ridges and tall trees block both direct beam and diffuse sky short wave radiation. To simulate adequately the major effects of these environments on radiation, the model incorporated (1) standard treatment of solar geometry (after Harris, 1983); (2) separation of direct and diffuse radiation by considering scattering and absorption due to aerosols, water vapor, air molecules and ozone (after Iqbal, 1983); (3) anisotropy of diffuse radiation modeled as a circumsolar component (15–50% of the total clear sky diffuse) plus an isotropic background; and (4) proper calculation of the proportions of sky radiation and ground reflected radiation sensed by both horizontal and inclined sensors. The model was calibrated using data from both horizontal and inclined pyranometers at six sites over four years. Values for the Ångstrom turbidity coefficient and the percentage of circumsolar diffuse radiation were determined using an iterative best fit technique. Mean monthly values of these coefficients and mean monthly ozone and water vapor concentrations from nearby weather service stations could be used for predicting total, cloud free, daily radiation with acceptable accuracy. Required site measurements include slope, aspect, latitude, longitude, date, time, effective horizon for the site, and an assessment of albedo for the surrounding terrain (including vegetation).
","language":"English","doi":"10.1016/0168-1923(87)90061-X","usgsCitation":"Flint, A.L., and Childs, S., 1987, Calculation of solar radiation in mountainous terrain: Agricultural and Forest Meteorology, v. 40, no. 3, p. 233-249, https://doi.org/10.1016/0168-1923(87)90061-X.","productDescription":"17 p.","startPage":"233","endPage":"249","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":357593,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Flint, Alan L. 0000-0002-5118-751X aflint@usgs.gov","orcid":"https://orcid.org/0000-0002-5118-751X","contributorId":1492,"corporation":false,"usgs":true,"family":"Flint","given":"Alan","email":"aflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":745889,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Childs, S.W.","contributorId":26449,"corporation":false,"usgs":true,"family":"Childs","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":745890,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70200471,"text":"70200471 - 1987 - Resource assessments, geologic deposit models, and offshore minerals with an example of heavy-mineral sands","interactions":[],"lastModifiedDate":"2018-10-22T11:17:08","indexId":"70200471","displayToPublicDate":"1985-10-18T14:30:07","publicationYear":"1987","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesTitle":{"id":5768,"text":"NATO Science Series","active":true,"publicationSubtype":{"id":24}},"displayTitle":"Resource assessments, geologic deposit models, and offshore minerals with an example of heavy-mineral sands","title":"Resource assessments, geologic deposit models, and offshore minerals with an example of heavy-mineral sands","docAbstract":"A resource assessment method for offshore minerals based on descriptive and grade-tonnage models is proposed. Historical development and applications of this method are summarized. Based on this approach, descriptive and quantitative deposit models for strand-line titanium placer deposits have been developed. Descriptive statistics were also computed using the worldwide deposit data set upon which the grade-tonnage models are based. Certain guidelines and limitations in applying onshore titanium deposit models to offshore assessment and exploration must, however, be observed. The descriptive model points out the specific features of strandline titanium placer deposits which can be of use in selection of areas for exploration; the grade-tonnage models display the expected size distribution for this type of deposit. Used with an estimate of expected number of deposits, this information can be applied to quantify probable values associated with deposits of this type within a given area.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Marine minerals ","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Springer","doi":"10.1007/978-94-009-3803-8_32","isbn":"978-94-010-8192-4","usgsCitation":"Attanasi, E., DeYoung, J.H., Force, E.R., and Grosz, A., 1987, Resource assessments, geologic deposit models, and offshore minerals with an example of heavy-mineral sands, chap. of Marine minerals : NATO Science Series, v. 194, p. 485-513, https://doi.org/10.1007/978-94-009-3803-8_32.","productDescription":"29 p.","startPage":"485","endPage":"513","numberOfPages":"29","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":358612,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"194","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"editors":[{"text":"Teleki, P. G.","contributorId":31137,"corporation":false,"usgs":true,"family":"Teleki","given":"P.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":749043,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Dobson, M.R.","contributorId":100858,"corporation":false,"usgs":true,"family":"Dobson","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":749044,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Moore, Jeffrey R.","contributorId":194909,"corporation":false,"usgs":false,"family":"Moore","given":"Jeffrey","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":749045,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"U., von Stackelberg","contributorId":209895,"corporation":false,"usgs":false,"family":"U.","given":"von","email":"","middleInitial":"Stackelberg","affiliations":[],"preferred":false,"id":749046,"contributorType":{"id":2,"text":"Editors"},"rank":4}],"authors":[{"text":"Attanasi, Emil D. 0000-0001-6845-7160 attanasi@usgs.gov","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":198728,"corporation":false,"usgs":true,"family":"Attanasi","given":"Emil D.","email":"attanasi@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":749032,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DeYoung, J. H.","contributorId":75908,"corporation":false,"usgs":true,"family":"DeYoung","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":749033,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Force, E. R.","contributorId":28235,"corporation":false,"usgs":true,"family":"Force","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":749034,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Grosz, Andrew agrosz@usgs.gov","contributorId":4774,"corporation":false,"usgs":true,"family":"Grosz","given":"Andrew","email":"agrosz@usgs.gov","affiliations":[],"preferred":true,"id":749035,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}