The Land Analysis System (LAS) is a fully integrated digital analysis system designed to support remote sensing, image processing, and geographic information systems research. LAS is being developed through a cooperative effort between the National Aeronautics and Space Administration Goddard Space Flight Center and the U. S. Geological Survey Earth Resources Observation Systems (EROS) Data Center.
\nLAS has over 275 analysis modules capable to performing input and output, radiometric correction, geometric registration, signal processing, logical operations, data transformation, classification, spatial analysis, nominal filtering, conversion between raster and vector data types, and display manipulation of image and ancillary data.
\nLAS is currently implant using the Transportable Applications Executive (TAE). While TAE was designed primarily to be transportable, it still provides the necessary components for a standard user interface, terminal handling, input and output services, display management, and intersystem communications. With TAE the analyst uses the same interface to the processing modules regardless of the host computer or operating system.
\nLAS was originally implemented at EROS on a Digital Equipment Corporation computer system under the Virtual Memorial System operating system with DeAnza displays and is presently being converted to run on a Gould Power Node and Sun workstation under the Berkeley System Distribution UNIX operating system.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Pecora XI Symposium","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"American Society of Photogrammetry","publisherLocation":"Falls Church, VA","usgsCitation":"Quirk, B.K., and Olseson, L.R., 1987, Overview of the land analysis system (LAS), in Pecora XI Symposium, p. 133-148.","productDescription":"16 p.","startPage":"133","endPage":"148","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":288887,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ae7793e4b0abf75cf2c182","contributors":{"authors":[{"text":"Quirk, Bruce K. quirk@usgs.gov","contributorId":4285,"corporation":false,"usgs":true,"family":"Quirk","given":"Bruce","email":"quirk@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":495014,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Olseson, Lyndon R.","contributorId":94594,"corporation":false,"usgs":true,"family":"Olseson","given":"Lyndon","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":495015,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70113239,"text":"70113239 - 1987 - New techniques for the quantification and modeling of remotely sensed alteration and linear features in mineral resource assessment studies","interactions":[],"lastModifiedDate":"2014-06-19T10:28:28","indexId":"70113239","displayToPublicDate":"1987-08-01T10:24:35","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3023,"text":"Pecora XI Symposium","active":true,"publicationSubtype":{"id":10}},"title":"New techniques for the quantification and modeling of remotely sensed alteration and linear features in mineral resource assessment studies","docAbstract":"Linear structural features and hydrothermally altered rocks that were interpreted from Landsat data have been used by the U.S. Geological Survey (USGS) in regional mineral resource appraisals for more than a decade. In the past, linear features and alterations have been incorporated into models for assessing mineral resources potential by manually overlaying these and other data sets. Recently, USGS research into computer-based geographic information systems (GIS) for mineral resources assessment programs has produced several new techniques for data analysis, quantification, and integration to meet assessment objectives.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pecora XI Symposium","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Society of Photogrammetry","publisherLocation":"Falls Church, VA","usgsCitation":"Trautwein, C., and Rowan, L.C., 1987, New techniques for the quantification and modeling of remotely sensed alteration and linear features in mineral resource assessment studies: Pecora XI Symposium, p. 86-87.","productDescription":"2 p.","startPage":"86","endPage":"87","numberOfPages":"2","costCenters":[],"links":[{"id":288885,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ae7786e4b0abf75cf2c16e","contributors":{"authors":[{"text":"Trautwein, C. M.","contributorId":86748,"corporation":false,"usgs":true,"family":"Trautwein","given":"C. M.","affiliations":[],"preferred":false,"id":495013,"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":495012,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70113234,"text":"70113234 - 1987 - Application of combined Landsat thematic mapper and airborne thermal infrared multispectral scanner data to lithologic mapping in Nevada","interactions":[],"lastModifiedDate":"2014-06-19T10:09:21","indexId":"70113234","displayToPublicDate":"1987-08-01T10:02:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3023,"text":"Pecora XI Symposium","active":true,"publicationSubtype":{"id":10}},"title":"Application of combined Landsat thematic mapper and airborne thermal infrared multispectral scanner data to lithologic mapping in Nevada","docAbstract":"Future Landsat satellites are to include the Thematic Mapper (TM) and also may incorporate additional multispectral scanners. One such scanner being considered for geologic and other applications is a four-channel thermal-infrared multispectral scanner having 60-m spatial resolution. This paper discusses the results of studies using combined Landsat TM and airborne Thermal Infrared Multispectral Scanner (TIMS) digital data for lithologic discrimination, identification, and geologic mapping in two areas within the Basin and Range province of Nevada. Field and laboratory reflectance spectra in the visible and reflective-infrared and laboratory spectra in the thermal-infrared parts of the spectrum were used to verify distinctions made between rock types in the image data sets.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pecora XI Symposium","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Society of Photogrammetry","publisherLocation":"Falls Church, VA","usgsCitation":"Podwysocki, M.H., Ehmann, W., and Brickey, D., 1987, Application of combined Landsat thematic mapper and airborne thermal infrared multispectral scanner data to lithologic mapping in Nevada: Pecora XI Symposium, p. 79-82.","productDescription":"4 p.","startPage":"79","endPage":"82","numberOfPages":"4","costCenters":[],"links":[{"id":288884,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Mojave Desert","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.2,34.97 ], [ -116.2,37.52 ], [ -114.73,37.52 ], [ -114.73,34.97 ], [ -116.2,34.97 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ae762ce4b0abf75cf2beb8","contributors":{"authors":[{"text":"Podwysocki, M. H.","contributorId":70391,"corporation":false,"usgs":true,"family":"Podwysocki","given":"M.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":495011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ehmann, W. J.","contributorId":41836,"corporation":false,"usgs":true,"family":"Ehmann","given":"W. J.","affiliations":[],"preferred":false,"id":495010,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brickey, D.W.","contributorId":34156,"corporation":false,"usgs":true,"family":"Brickey","given":"D.W.","affiliations":[],"preferred":false,"id":495009,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70113228,"text":"70113228 - 1987 - Mapping contact metamorphic aureoles in Extremadura, Spain, using Landsat thematic mapper images","interactions":[],"lastModifiedDate":"2014-06-19T09:54:01","indexId":"70113228","displayToPublicDate":"1987-08-01T09:36:53","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3023,"text":"Pecora XI Symposium","active":true,"publicationSubtype":{"id":10}},"title":"Mapping contact metamorphic aureoles in Extremadura, Spain, using Landsat thematic mapper images","docAbstract":"In the Extremadura region of western Spain, Ag, Pb, Zn, and Sn deposits occur in the pieces of late Hercynian granitic plutons and near the pluton contacts in late Proterozoic slate and metagraywacke that have been regionally metamorphosed to the green schist facies. The plutons generally are well exposed and have distinctive geomorphological expression and vegetation; poor exposures of the metasedimentary host rocks and extensive cultivation, however, make delineation of the contact aureoles difficult.
\nLandsat Thematic Mapper (TM) images have been used to distinguish soil developed on the contact metamorphic rocks from soil formed on the stratigraphically equivalent slate-metagraywacke sequence. The mineral constituents of these soils are similar, except that muscovite is more common in the contact metamorphic soil; carbonaceous material is common in both soils. Contact metamorphic soil have lower reflectance, especially in the 1.6-micrometers wavelength region (TM 5), and weaker Al-OH, Mg-OH, and Fe3+ absorption features than do spectra of the slate-metagraywacke soil. The low-reflectance and subdued absorption features exhibited by the contact metamorphic soil spectra are attributed to the high absorption coefficient f the carbonaceous material caused by heating during emplacement of the granitic plutons.
\nThese spectral differences are evident in a TM 4/3, 4/5, 3/1 color-composite image. Initially, this image was used to outline the contact aureoles, but digital classification of the TM data was necessary for generating internally consistent maps of the distribution of the exposed contact metamorphic soil. In an August 1984, TM scene of the Caceras area, the plowed, vegetation-free fields were identified by their low TM 4/3 values. Then, ranges of TM 4/5 and 3/1 values were determine for selected plower fields within and outside the contact aureoles; TM 5 produced results similar to TM 4/5. Field evaluation, supported by X-ray diffraction and petrographic studies, confirmed the presence of more extensive aureoles than shown in published geologic maps; few misclassified areas were noted. Additional plowed fields consisting of exposed contact metamorphic soil were mapped digitally in an August 1985 TM scene.
\nSubsequently, this approach was used to map two 1-km-wide linear zones of contact metamorphosed rock and oil in the San Nicolas-Sn-W Mine area, which is located approximated 125 km southeast of the Caceras study area. Exposures of granite in the San Nicolas area are limited to a few unaltered granitic dikes in the mine and a small exposure of unaltered pegmatite-bearing granite in a quarry about 1.5 km west of the mine. The present of coarsely crystalline biotite and beryl in the granite in the quarry and of contact metamorphosed slate up to 2.5 km from the nearest granite exposure suggest that only the apical part of a pluton is exposed in the quarry and that a larger, shallowly buried body is probably present.
\nThese results indicate that potential application of TM image analysis to mineral exploration in lithologically similar areas that are cultivated in spite of poor rock exposures.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pecora XI Symposium","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Society of Photogrammetry","publisherLocation":"Falls Church, VA","usgsCitation":"Rowan, L.C., Anton-Pacheco, C., Brickey, D., Kingston, M., and Payas, A., 1987, Mapping contact metamorphic aureoles in Extremadura, Spain, using Landsat thematic mapper images: Pecora XI Symposium, p. 77-78.","productDescription":"2 p.","startPage":"77","endPage":"78","numberOfPages":"2","costCenters":[],"links":[{"id":288883,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Spain","city":"Extremadura","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -7.545,37.941 ], [ -7.545,40.4867 ], [ -4.6476,40.4867 ], [ -4.6476,37.941 ], [ -7.545,37.941 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ae7772e4b0abf75cf2c130","contributors":{"authors":[{"text":"Rowan, L. C.","contributorId":40584,"corporation":false,"usgs":true,"family":"Rowan","given":"L.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":495006,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anton-Pacheco, C.","contributorId":20485,"corporation":false,"usgs":true,"family":"Anton-Pacheco","given":"C.","email":"","affiliations":[],"preferred":false,"id":495004,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brickey, D.W.","contributorId":34156,"corporation":false,"usgs":true,"family":"Brickey","given":"D.W.","affiliations":[],"preferred":false,"id":495005,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kingston, M.J.","contributorId":88768,"corporation":false,"usgs":true,"family":"Kingston","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":495007,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Payas, A.","contributorId":11953,"corporation":false,"usgs":true,"family":"Payas","given":"A.","affiliations":[],"preferred":false,"id":495003,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70210043,"text":"70210043 - 1987 - Seismology of the continental crust and upper mantle","interactions":[],"lastModifiedDate":"2020-05-12T13:17:54.120955","indexId":"70210043","displayToPublicDate":"1987-07-12T08:10:11","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3283,"text":"Reviews of Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Seismology of the continental crust and upper mantle","docAbstract":"More seismological studies of the continental crust and sub‐crustal lithosphere of the United States have been completed in the past four years than at any other similar period, and a continued growth in activity is likely to continue for years to come. Several trends account for this phenomenon. First, the interest in seismic reflection studies generated initially by COCORP results in this country [Brown and others, 1986], and later by the British BIRPS results [Matthews and Gheadie, 1986], has led to the development of several other seismic reflection programs. Among the most active of these research programs are those of the University of Wyoming [Smithson and others, 1986], Virginia Polytechnic Institute, CALCRUST [Henyey, 1986], and the U.S. Geological Survey (USGS) [Hamilton, 1986]. In Canada, the Lithoprobe program has achieved remarkable results in a variety of geographic locations [Green et al., 1986]. A second trend is the resurgence of interest in seismic‐refraction/wide‐angle reflection profiling. The year 1978 marked the beginning of this increased activity when several large projects were conducted in the western U.S., such as the Yellowstone‐Snake River Plain experiment organized by the University of Utah. Since 1979, a large amount of refraction/wide‐angle reflection data has been collected by the USGS and by university groups utilizing large numbers of state‐of‐the‐art industry seismographs in cooperative experiments. A third trend is the increased sophistication of other seismic methods such as teleseismic delay‐time methods, tomography, and receiver‐transfer functions. In these studies, permanent or temporary recording arrays have been used to determine local and regional crustal and upper‐mantle structure with impressive resolution.
The Garrison Diversion Unit (GDU) of the Pick-Sloan Missouri Basin program was authorized in 1965, with the purpose of diverting Missouri River water to the James River for irrigation, municipal and industrial water supply, fish and wildlife habitat, recreation, and flood control. The project was reauthorized in 1986, with the specification that comprehensive studies be conducted to address a variety of issues. One of these ongoing studies addresses potential impacts of GDU construction and operation on lands of the National Wildlife Refuge (NWR) system, including Arrowwood and Sand Lake Refuges (the Refuges) on the James River. A number of concerns at these Refuges have been identified; the primary concerns addressed in this report include increased winter return flows, which would limit control of rough fish; increased turbidity during project construction, which would decrease production of sago pondweed; and increased water level fluctuations in the late spring and early summer, which would destroy the nests of some over-water nesting birds.
\nThe facilitated workshop described in this report was conducted February 18-20, 1987, under the joint sponsorship of the U.S. Bureau of Reclamation, the U.S. Fish and Wildlife Service, and the North Dakota Game and Fish Department. The primary objectives of the workshop were to evaluate the feasibility of using simulation modeling techniques to estimate GDU impacts on Arrowwood and Sand Lake Refuges and to suggest enhancements to the James River Refuge monitoring program. The workshop was structured around the formulation of four submodels: a Hydrology and Water Quality submodel to simulate changes in Refuge pool elevations, turnover rates, and water quality parameters (e.g., total dissolved solids, turbidity, dissolved oxygen, nutrients, water temperature, pesticides) due to GDU construction and operation; a Vegetation submodel to simulate concomitant changes in wetland communities (e.g., sago pondweed, wet meadows, deep and shallow marsh); a Fish submodel to estimate changes in abundance or biomass of rough fish (carp, buffalo) and sportfish (northern pike); and a Wildlife submodel to calculate indices of waterfowl abundance or habitat suitability (e.g., for mallards, western grebes, migrating diving ducks, white-faced ibis, egrets, over-water nesters). Submodels considered weekly to monthly changes in pools within a Refuge over a time horizon of 30-50 years.
\nBased on workshop discussions and past experience with impact analysis modeling, a phased modeling approach was recommended for the James River Refuges analysis. The first phase would involve two modeling efforts. The existing Sand Lake hydrology model, and a similar one developed for Arrowwood NWR, would be validated and used to predict changes on pool elevations and winter inflows to each pool for a variety of GDU alternatives. Outputs from simulations would then be evaluated in terms of potential fish and wildlife impacts. For example, the models could generate indices comparing the magnitude and timing of winter inflows for pre- and postproject conditions; fisheries biologists could then use these indices to better quantify their concerns relative to potential changes in the frequency of rough-fish control. The other modeling effort in the first phase would involve developing a sago pondweed growth model to integrate Refuge monitoring data and existing literature and perhaps to address some questions concerning turbidity impacts. A second phase of simulation modeling would be undertaken only if the initial analyses of hydrologic outputs indicated significant potential problems and if monitoring and research projects had clarified some of the biological and physical processes that cannot be modeled reliably at the present time (e.g., resuspension of sediments by carp, immigration and winter mortality of fish, loss of waterfowl nests due to wave action). The second phase would attempt to develop an integrated impact assessment model.
\nIn order to address some of the biological and physical processes that presently are not well understood, a number of studies and enhancements to the Refuge monitoring program were suggested. The Hydrology and Water Quality workgroup recommended increasing turbidity and dissolved oxygen sampling, dropping expensive analysis of some trace elements, adding more pesticide analysis (including some biological monitoring), and developing better area-capacity data for the Sand Lake hydrology model. The Vegetation workgroup suggested expanding the number of monitoring stations, monitoring photosynthetically active radiation by depth, and modifying the biomass sampling procedure and schedule. Also suggested were additional analyses of existing Refuge monitoring data and additional field studies concerning sago growth under a variety of environmental conditions and effects of rough fish density on sago. A careful examination of Refuge narrative reports was recommended by the Fish workgroup to characterize conditions that led to various rates of winter-kill. Monitoring enhancement related to a better understanding of fish population dynamics included increasing dissolved oxygen monitoring, continuing present monitoring of fish movement upstream from Jamestown Reservoir into Arrowwood NWR, initiating similar efforts for upstream movement into Sand Lake NWR and downstream movements into both Refuges, and augmenting the present gillnetting program (or replacing it) with sampling for population and age/size structure estimates. The Wildlife workgroup suggested estimating the relative density of mallard nests in over-water and wet meadow nesting areas, estimating the number of western grebe nests lost due to wave action, delineating wet meadows on the Refuge vegetation maps, estimating annual tuber consumption by birds, and monitoring insect/macroinvertebrate abundance. The workgroup also suggested research studies to better understand the relationships between food supplies and the growth and survival of ducklings and young grebes.
\nthe workshop discussions also helped identify some suggestions for modifying project features that, if feasible from an engineering and operational standpoint, would reduce impacts on Refuge lands. These suggestions included: designing drains with control structures or small \"reregulation\" reservoirs to hold winter return flows that might adversely affect rough fish control, spreading construction activities over a number of years to reduce potential impacts of turbidity on sago pondweed in any single year, scheduling construction to occur after the spring sprouting and elongation growth stages to reduce impacts on sago pondweed, and installing \"quick acting\" control structures at Arrowwood NWR to reduce pool level fluctuations that might destroy nests of some over-water nesting waterfowl.
","language":"English","publisher":"U.S. Fish and Wildlife Service, National Ecology Center","publisherLocation":"Fort Collins, CO","usgsCitation":"Hamilton, D.B., Auble, G.T., Farmer, A.H., and Roelle, J.E., 1987, Modeling potential impacts of the Garrison Diversion Unit project on Sand Lake and Arrowwood National Wildlife Refuges: a feasibility analysis, 79 p.","productDescription":"79 p.","numberOfPages":"79","costCenters":[],"links":[{"id":292796,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f707dfe4b05ec1f2431c03","contributors":{"authors":[{"text":"Hamilton, David B. hamiltond@usgs.gov","contributorId":193,"corporation":false,"usgs":true,"family":"Hamilton","given":"David","email":"hamiltond@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":499052,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Auble, Gregor T. 0000-0002-0843-2751 aubleg@usgs.gov","orcid":"https://orcid.org/0000-0002-0843-2751","contributorId":2187,"corporation":false,"usgs":true,"family":"Auble","given":"Gregor","email":"aubleg@usgs.gov","middleInitial":"T.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":499053,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Farmer, Adrian H.","contributorId":107759,"corporation":false,"usgs":true,"family":"Farmer","given":"Adrian","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":499055,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Roelle, James E. roelleb@usgs.gov","contributorId":2330,"corporation":false,"usgs":true,"family":"Roelle","given":"James","email":"roelleb@usgs.gov","middleInitial":"E.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":499054,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70182141,"text":"70182141 - 1987 - The use of the National Water Data Exchange in support of estuarine and coastal programs","interactions":[],"lastModifiedDate":"2017-02-16T15:09:54","indexId":"70182141","displayToPublicDate":"1987-06-17T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The use of the National Water Data Exchange in support of estuarine and coastal programs","docAbstract":"The National Water Data Exchange(NAWDEX) was established by the U.S. Geological Survey in 1976. Its program is directed toward improving the exchange of water and water-related data collected and made available by hundreds of federal and non-federal agencies throughout the United States. This paper describes the NAWDEX program and the services which can be provided to assist coastal and estuarine programs.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Proceedings of the Tenth National conference of the Coastal Society","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"Tenth National conference of the Coastal Society","language":"English","usgsCitation":"Williams, O.O., and Edwards, M.D., 1987, The use of the National Water Data Exchange in support of estuarine and coastal programs, in Proceedings of the Tenth National conference of the Coastal Society, v. 10, p. 465-470.","productDescription":"6 p.","startPage":"465","endPage":"470","costCenters":[],"links":[{"id":335783,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a6c85ce4b025c46428631b","contributors":{"authors":[{"text":"Williams, Owen O.","contributorId":108097,"corporation":false,"usgs":true,"family":"Williams","given":"Owen","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":669779,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, Melvin D.","contributorId":94305,"corporation":false,"usgs":true,"family":"Edwards","given":"Melvin","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":669780,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199769,"text":"70199769 - 1987 - The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra Nevada, California","interactions":[],"lastModifiedDate":"2018-09-27T14:22:27","indexId":"70199769","displayToPublicDate":"1987-06-01T14:21:41","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2299,"text":"Journal of Freshwater Ecology","active":true,"publicationSubtype":{"id":10}},"title":"The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra Nevada, California","docAbstract":"A portable apparatus was used to filter large quantities of water from streams in California's Sierra Nevada. Samples were processed and examined for Giardia spp. Cysts of Giardia were detected in 22 of 49 (44.9 percent) samples collected at sites downstream from areas of high recreational use and in 5 of 29 (17.2 percent) samples collected at sites downstream from areas of low recreational use. These data indicate that intensity of human use may play a significant role or be a useful indicator in Giardia contamination of surface water.
The past four years have been particularly fruitful for Martian research as the enormous volumes of data collected during the Viking mission became readily available to the general science community, and as reformatting of the remote sensing data into cartographic products made the data more useable. The 1:5,000,000‐scale map series is complete, and 1:2,000,000‐scale controlled mosaics of the entire planet are nearing completion. In addition 1:500,000‐scale mosaics have been prepared of about thirty local areas. A uniform scale, digital imaging data base is in preparation (Batson, 1986), and the infrared data have been reformatted to make it more accessible to the general user (Martin and Kieffer, 1985).
","language":"English","publisher":"Wiley","doi":"10.1029/RG025i002p00285","usgsCitation":"Carr, M.H., 1987, The Martian surface: Reviews of Geophysics, v. 25, no. 2, p. 285-292, https://doi.org/10.1029/RG025i002p00285.","productDescription":"8 p.","startPage":"285","endPage":"292","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":374439,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-06-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Carr, M. H.","contributorId":84727,"corporation":false,"usgs":true,"family":"Carr","given":"M.","email":"","middleInitial":"H.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":false,"id":788357,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70210020,"text":"70210020 - 1987 - Crustal structure beneath exposed accreted terranes of Southern Alaska ","interactions":[],"lastModifiedDate":"2020-05-11T14:14:59.108554","indexId":"70210020","displayToPublicDate":"1987-04-01T09:08:54","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Crustal structure beneath exposed accreted terranes of Southern Alaska ","docAbstract":"The crustal structure beneath the exposed terranes of southern Alaska has been explored using coincident seismic refraction and reflection profiling. A wide-angle reflector at 8-9 km depth, at the base of an inferred low-velocity zone, underlies the Peninsular and Chugach terranes, appears to truncate their boundary, and may represent a horizontal decollement beneath the terranes. The crust beneath the Chugach terrane is characterized by a series of north-dipping paired layers having low and high velocities that may represent subducted slices of oceanic crust and mantle. This layered series may continue northward under the Peninsular terrane. Earthquake locations in the Wrangell Benioff zone indicate that at least the upper two low-high velocity layer pairs are tectonically inactive and that they appear to have been accreted to the base of the continental crust. The refraction data suggest that the Contact fault between two similar terranes, the Chugach and Prince William terranes, is a deeply penetrating feature that separates lower crust (deeper than 10 km) with paired dipping reflectors, from crust without such reflectors.
","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.1987.tb04390.x","usgsCitation":"Fuis, G.S., Ambos, E.L., Mooney, W.D., Page, R., Fisher, M.A., Brocher, T.M., and Taber, J., 1987, Crustal structure beneath exposed accreted terranes of Southern Alaska : Geophysical Journal International, v. 89, no. 1, p. 73-78, https://doi.org/10.1111/j.1365-246X.1987.tb04390.x.","productDescription":"6 p.","startPage":"73","endPage":"78","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":480077,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.1987.tb04390.x","text":"Publisher Index Page"},{"id":374599,"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 -163.828125,\n 53.80065082633023\n ],\n [\n -129.375,\n 53.80065082633023\n ],\n [\n -129.375,\n 63.074865690586634\n ],\n [\n -163.828125,\n 63.074865690586634\n ],\n [\n -163.828125,\n 53.80065082633023\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"89","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Fuis, Gary S. 0000-0002-3078-1544 fuis@usgs.gov","orcid":"https://orcid.org/0000-0002-3078-1544","contributorId":2639,"corporation":false,"usgs":true,"family":"Fuis","given":"Gary","email":"fuis@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788829,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ambos, E. L.","contributorId":23957,"corporation":false,"usgs":true,"family":"Ambos","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":788830,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788831,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Page, R.A.","contributorId":40197,"corporation":false,"usgs":true,"family":"Page","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":788832,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fisher, Michael A. mfisher@usgs.gov","contributorId":1991,"corporation":false,"usgs":true,"family":"Fisher","given":"Michael","email":"mfisher@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":788833,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brocher, Thomas M. 0000-0002-9740-839X brocher@usgs.gov","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":262,"corporation":false,"usgs":true,"family":"Brocher","given":"Thomas","email":"brocher@usgs.gov","middleInitial":"M.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788834,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Taber, J.J.","contributorId":14124,"corporation":false,"usgs":true,"family":"Taber","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":788835,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":1003071,"text":"1003071 - 1987 - Sedimentation in Lake Onalaska, navigation pool 7, Upper Mississippi River, since impoundment","interactions":[],"lastModifiedDate":"2026-04-21T16:19:50.023407","indexId":"1003071","displayToPublicDate":"1987-04-01T00:00:00","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":"Sedimentation in Lake Onalaska, navigation pool 7, Upper Mississippi River, since impoundment","docAbstract":"Sediment accumulation was evaluated in Lake Onalaska, a 2800-ha backwater impoundment on the Upper Mississippi River. Computer programs were used to process bathometric charts and generate an extensive data set on water depth for the lake. Comparison of 1983 survey data with pre-impoundment (before 1937) data showed that Lake Onalaska had lost less than 10 percent of its original mean depth in the 46 years since impoundment. Previous estimates of sedimentation rates based on Cesium-137 sediment core analysis appear to have been too high.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1987.tb00799.x","issn":"00431370","usgsCitation":"Korschgen, C.E., Jackson, G.A., Muessig, L., and Southworth, D., 1987, Sedimentation in Lake Onalaska, navigation pool 7, Upper Mississippi River, since impoundment: Journal of the American Water Resources Association, v. 23, no. 2, p. 221-226, https://doi.org/10.1111/j.1752-1688.1987.tb00799.x.","productDescription":"6 p.","startPage":"221","endPage":"226","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":129981,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Lake Onalaska, Upper Mississippi River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.36479496225748,\n 43.97561998248412\n ],\n [\n -91.36479496225748,\n 43.85908889265227\n ],\n [\n -91.21155734312211,\n 43.85908889265227\n ],\n [\n -91.21155734312211,\n 43.97561998248412\n ],\n [\n -91.36479496225748,\n 43.97561998248412\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"23","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"4f4e4a0be4b07f02db5fbcc5","contributors":{"authors":[{"text":"Korschgen, C. E.","contributorId":9197,"corporation":false,"usgs":true,"family":"Korschgen","given":"C.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":312701,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jackson, G. A.","contributorId":73138,"corporation":false,"usgs":true,"family":"Jackson","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":312704,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Muessig, L.F.","contributorId":12810,"corporation":false,"usgs":true,"family":"Muessig","given":"L.F.","email":"","affiliations":[],"preferred":false,"id":312702,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Southworth, D.C.","contributorId":36081,"corporation":false,"usgs":true,"family":"Southworth","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":312703,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70121884,"text":"70121884 - 1987 - Community models for wildlife impact assessment: a review of concepts and approaches","interactions":[],"lastModifiedDate":"2014-08-25T09:21:38","indexId":"70121884","displayToPublicDate":"1987-03-01T09:08:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Community models for wildlife impact assessment: a review of concepts and approaches","docAbstract":"The first two sections of this paper are concerned with defining and bounding communities, and describing those attributes of the community that are quantifiable and suitable for wildlife impact assessment purposes. Prior to the development or use of a community model, it is important to have a clear understanding of the concept of a community and a knowledge of the types of community attributes that can serve as outputs for the development of models. Clearly defined, unambiguous model outputs are essential for three reasons: (1) to ensure that the measured community attributes relate to the wildlife resource objectives of the study; (2) to allow testing of the outputs in experimental studies, to determine accuracy, and to allow for improvements based on such testing; and (3) to enable others to clearly understand the community attribute that has been measured.
\nThe third section of this paper described input variables that may be used to predict various community attributes. These input variables do not include direct measures of wildlife populations. Most impact assessments involve projects that result in drastic changes in habitat, such as changes in land use, vegetation, or available area. Therefore, the model input variables described in this section deal primarily with habitat related features.
\nSeveral existing community models are described in the fourth section of this paper. A general description of each model is provided, including the nature of the input variables and the model output. The logic and assumptions of each model are discussed, along with data requirements needed to use the model.
\nThe fifth section provides guidance on the selection and development of community models. Identification of the community attribute that is of concern will determine the type of model most suitable for a particular application. This section provides guidelines on selected an existing model, as well as a discussion of the major steps to be followed in modifying an existing model or developing a new model. Considerations associated with the use of community models with the Habitat Evaluation Procedures are also discussed.
\nThe final section of the paper summarizes major findings of interest to field biologists and provides recommendations concerning the implementation of selected concepts in wildlife community analyses.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Biological Report","largerWorkSubtype":{"id":9,"text":"Other Report"},"language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, D.C.","usgsCitation":"Schroeder, R.L., 1987, Community models for wildlife impact assessment: a review of concepts and approaches, v. 87, no. 2, vii, 41 p.","productDescription":"vii, 41 p.","numberOfPages":"48","costCenters":[],"links":[{"id":292931,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53fc4dc6e4b0413fd75d6a6c","contributors":{"authors":[{"text":"Schroeder, Richard L.","contributorId":10368,"corporation":false,"usgs":true,"family":"Schroeder","given":"Richard","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":499265,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70185541,"text":"70185541 - 1987 - Monodisperse ferrous phosphate colloids in an anoxic groundwater plume","interactions":[],"lastModifiedDate":"2020-01-18T10:44:34","indexId":"70185541","displayToPublicDate":"1987-03-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Monodisperse ferrous phosphate colloids in an anoxic groundwater plume","docAbstract":"Groundwater samples collected near a secondary-sewage infiltration site on Cape Cod, Massachusetts were examined for colloidal materials (10–1000 nm). In two wells the water contained a population of monodisperse 100-nm particles, detected using laser-light scattering and autocorrelation data processing. SEM and SEM-EDAX analysis of these colloidal materials collected on ultrafilters confirmed the laser light scattering result and revealed that these microparticles consisyed of primarily iron and phosphorus in a 1.86 Fe to 1.0 P stoichiometric ratio. Chemical analyses of the water samples, together with equilibrium solubility calculations, strongly suggest that the ion-activity product should exceed the solubility product of a 100-nm diameter predominantly vivianite-type (Fe3(PO4)2 · 8H2O) colloidal phase. In light of our results, we conclude that these microparticles were formed by sewage-derived phosphate combining with ferrous iron released from the aquifer solids, and that these colloids may be moving in the groundwater flow. Such a subsurface transport process could have major implications regarding the movement of particle-reactive pollutants traditionally viewed as non-mobile in groundwater.
","language":"English","publisher":"Wiley","doi":"10.1016/0169-7722(87)90011-8","usgsCitation":"Gschwend, P.M., and Reynolds, M.D., 1987, Monodisperse ferrous phosphate colloids in an anoxic groundwater plume: Journal of Contaminant Hydrology, v. 1, no. 3, p. 309-327, https://doi.org/10.1016/0169-7722(87)90011-8.","productDescription":"19 p. ","startPage":"309","endPage":"327","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338188,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts ","otherGeospatial":"Cape Cod","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.850830078125,\n 41.36031866306708\n ],\n [\n -69.8291015625,\n 41.36031866306708\n ],\n [\n -69.8291015625,\n 42.13082130188811\n ],\n [\n -70.850830078125,\n 42.13082130188811\n ],\n [\n -70.850830078125,\n 41.36031866306708\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58d4df18e4b05ec79911d1f7","contributors":{"authors":[{"text":"Gschwend, Philip M.","contributorId":189502,"corporation":false,"usgs":false,"family":"Gschwend","given":"Philip","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":685911,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reynolds, Matthew D.","contributorId":189741,"corporation":false,"usgs":false,"family":"Reynolds","given":"Matthew","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":685912,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70221503,"text":"70221503 - 1987 - Alaskan Cretaceous-Tertiary floras and Arctic origins","interactions":[],"lastModifiedDate":"2021-06-18T21:53:06.517019","indexId":"70221503","displayToPublicDate":"1987-02-01T16:48:43","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3001,"text":"Paleobiology","active":true,"publicationSubtype":{"id":10}},"title":"Alaskan Cretaceous-Tertiary floras and Arctic origins","docAbstract":"Cretaceous floras in Alaska, when compared to those at mid-latitudes, generally indicate later appearances in Alaska of major clades and major leaf morphologies. Compared to mid-latitude floras, Alaskan Late Cretaceous floras contain few major clades. The Alaskan clades diversified but at a low taxonomic level. Migrational pathways into high latitudes were probably along streams. Similar patterns characterized the Alaskan Tertiary, although some southward migrations of lineages occurred during the Neogene. Review of other Arctic paleontological data from Ellesmere Island, previously used to suggest that the Arctic was a major center of origin during the Late Cretaceous, indicates that the ages of supposedly substantiating dinoflagellate floras were misinterpreted. When the dinoflagellate data are interpreted according to standard methodology, first occurrences of genera and species groups on Ellesmere are, like the Alaskan occurrences, later than first occurrences at middle latitudes.
","language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0094837300008599","usgsCitation":"Spicer, R.A., Wolfe, J.A., and Nichols, D.J., 1987, Alaskan Cretaceous-Tertiary floras and Arctic origins: Paleobiology, v. 13, no. 1, p. 73-83, https://doi.org/10.1017/S0094837300008599.","productDescription":"11 p.","startPage":"73","endPage":"83","costCenters":[],"links":[{"id":386596,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"1","noUsgsAuthors":false,"publicationDate":"2016-04-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Spicer, Robert A.","contributorId":80681,"corporation":false,"usgs":true,"family":"Spicer","given":"Robert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":817888,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolfe, Jack A.","contributorId":102474,"corporation":false,"usgs":true,"family":"Wolfe","given":"Jack","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":817889,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nichols, Douglas J.","contributorId":87184,"corporation":false,"usgs":true,"family":"Nichols","given":"Douglas","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":817890,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5222178,"text":"5222178 - 1987 - The Husting dilemma: A methodological note","interactions":[],"lastModifiedDate":"2023-12-18T16:56:50.644573","indexId":"5222178","displayToPublicDate":"1987-02-01T12:19:03","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"The Husting dilemma: A methodological note","docAbstract":"Recently, Gill (1985) discussed the interpretation of capture history data resulting from his own studies on the red-spotted newt, Notophthalmus viridescens , and work by Husting (1965) on spotted salamanders, Ambystoma maculatum. Gill (1985) noted that gaps in capture histories (years in which individuals were not captured, preceded and followed by years in which they were) could result from either of two very different possibilities: (1) failure of the animal to return to the fenced pond to breed (the alternative Husting (1965) favored), or (2) return of the animal to the breeding pond, but failure of the investigator to capture it and detect its presence. The authors agree entirely with Gill (1985) that capture history data such as his or those of Husting (1965) should be analyzed using models that recognize the possibility of 'census error,' and that it is important to try to distinguish between such 'error' and skipped breeding efforts. The purpose of this note is to point out the relationship between Gill's (1985:347) null model and certain capture-recapture models, and to use capture-recapture models and tests to analyze the original data of Husting (1965).","language":"English","publisher":"Ecological Society of America","doi":"10.2307/1938822","usgsCitation":"Nichols, J.D., Hepp, G.R., Pollock, K.H., and Hines, J.E., 1987, The Husting dilemma: A methodological note: Ecology, v. 68, no. 1, p. 213-217, https://doi.org/10.2307/1938822.","productDescription":"5 p.","startPage":"213","endPage":"217","numberOfPages":"5","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":196159,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c2ae","contributors":{"authors":[{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":140652,"corporation":false,"usgs":true,"family":"Nichols","given":"James","email":"jnichols@usgs.gov","middleInitial":"D.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":335719,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hepp, Gary R.","contributorId":8191,"corporation":false,"usgs":true,"family":"Hepp","given":"Gary","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":335718,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pollock, Kenneth H.","contributorId":8590,"corporation":false,"usgs":false,"family":"Pollock","given":"Kenneth","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":335721,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hines, James E. 0000-0001-5478-7230 jhines@usgs.gov","orcid":"https://orcid.org/0000-0001-5478-7230","contributorId":146530,"corporation":false,"usgs":true,"family":"Hines","given":"James","email":"jhines@usgs.gov","middleInitial":"E.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":335720,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70207782,"text":"70207782 - 1987 - Inorganic and organic geochemistry of Eocene to Cretaceous strata recovered from the lower continental rise, North American Basin, Site 603, Deep Sea Drilling Project Leg 93","interactions":[],"lastModifiedDate":"2024-02-02T15:54:15.603156","indexId":"70207782","displayToPublicDate":"1987-01-10T11:26:47","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"title":"Inorganic and organic geochemistry of Eocene to Cretaceous strata recovered from the lower continental rise, North American Basin, Site 603, Deep Sea Drilling Project Leg 93","docAbstract":"About one hundred samples of sediments and rocks recovered in Hole 603B were analyzed for type, abundance, and isotopic composition of organic matter, using a combination of Rock-Eval pyrolysis, C-H-N-S elemental analysis, and isotope-ratio mass spectrometry. Concentrations of major, minor, and trace inorganic elements were determined with a combination of X-ray fluorescence and induction-coupled plasma spectrometry.
The oldest strata recovered in Hole 603B (lithologic Unit V) consist of interbedded light-colored limestones and marlstones, and black calcareous claystones of Neocomian age. The inorganic and organic geochemical results suggest a very terrigenous aspect to the black claystones. The organic geochemical results indicate that the limestones and marlstones contain a mixture of highly degraded marine and terrestrial organic matter. Comparison of the Neocomian carbonates at Site 603 with those on the other side of the North Atlantic, off Northwest Africa at Site 367, shows that the organic matter at Site 367 contains more marine organic matter, as indicated by higher pyrolysis hydrogen indices and lighter values of δ13C. Comparison of inorganic geochemical results for the carbonate lithologies at Site 603 with those for carbonate lithologies at Site 367 suggests that the Site 603 carbonates may contain clastic material from both North American and African sources. The black claystones at Site 603, on the other hand, probably were derived almost entirely from North American clastic sources.
Lithologic Unit IV overlying the Neocomian carbonates, consists of interbedded red, green, and black claystones. The black claystones at Site 603 contain more than ten times the organic carbon concentration of the interbedded green claystones. The average concentration of organic carbon in the black claystones (2.8%), however, is low relative to most mid-Cretaceous black claystones and shales in the Atlantic, particularly those found off Northwest Africa. The geochemical data all suggest that the organic matter in the black claystones is more abundant but generally more degraded than the organic matter in the green claystones, and that it was derived mainly from terrestrial sources and deposited in oxygenated bottom waters. The increased percentage of black claystone beds in the upper Cenomanian section, and the presence of more hydrogen-rich organic matter in this part of the section, probably resulted from the increased production and accumulation of marine organic matter that is represented worldwide near the Cenomanian/Turonian boundary in deep-sea and land sections. A few upper Cenomanian black claystone samples that have hydrogen indices > 150 also contain particularly high concentrations of V and Zn. Most samples of black claystone, however, are not particularly metal-rich compared with other black claystones and shales. Compared with red claystones from lithologic Unit IV, the green and black claystones are enriched in many trace transition elements, especially V, Zn, Cu, Co, and Pb.
The main difference between the \"carbonaceous\" claystones of lithologic Unit IV and \"variegated\" or \"multicolored\" claystones of the overlying Upper Cretaceous to lower Tertiary Unit III is the absence of black claystone beds. As observed at several other sites (105 and 386), the multicolored claystones at Site 603 are somewhat enriched in several trace transition elements—especially Cu, Ni, and Cr—relative to most deep-sea clays. The multicolored claystones are not enriched in Fe and Mn, and therefore are not \"metalliferous\" sediments in the sense of those found at several locations in the eastern Pacific. The source of the slightly elevated concentrations of transition metals in the multicolored claystones probably is upward advection and diffusion of metals from the black claystones of the underlying Hatteras Formation.
The red, orange, and green claystone beds of lithologic Unit II (Eocene), like those of Unit III, really represent a continuation of deposition of multicolored claystone that began after the deposition of the Neocomian carbonates. The color of the few black beds that occur within this unit results from high concentrations of manganese oxide rather than high concentrations of organic matter.
","language":"English","publisher":"Deep Sea Drilling Project","doi":"10.2973/dsdp.proc.93.146.1987","usgsCitation":"Dean, W.E., and Arthur, M., 1987, Inorganic and organic geochemistry of Eocene to Cretaceous strata recovered from the lower continental rise, North American Basin, Site 603, Deep Sea Drilling Project Leg 93: Initial Reports of the D.S.D.P., v. 93, p. 1093-1137, https://doi.org/10.2973/dsdp.proc.93.146.1987.","productDescription":"45 p.","startPage":"1093","endPage":"1137","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":488881,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"http://doi.org/10.2973/dsdp.proc.93.146.1987","text":"Publisher Index Page"},{"id":371157,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Dean, Walter E. dean@usgs.gov","contributorId":1801,"corporation":false,"usgs":true,"family":"Dean","given":"Walter","email":"dean@usgs.gov","middleInitial":"E.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":779313,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arthur, M.A.","contributorId":24791,"corporation":false,"usgs":true,"family":"Arthur","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":779314,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70201411,"text":"70201411 - 1987 - I. Thermal evolution of Ganymede and implications for surface features. II. Magnetohydrodynamic constraints on deep zonal flow in the giant planets. III. A fast finite-element algorithm for two-dimensional photoclinometry","interactions":[],"lastModifiedDate":"2022-11-22T15:18:10.64313","indexId":"70201411","displayToPublicDate":"1987-01-09T14:46:20","publicationYear":"1987","noYear":false,"publicationType":{"id":21,"text":"Thesis"},"publicationSubtype":{"id":28,"text":"Thesis"},"title":"I. Thermal evolution of Ganymede and implications for surface features. II. Magnetohydrodynamic constraints on deep zonal flow in the giant planets. III. A fast finite-element algorithm for two-dimensional photoclinometry","docAbstract":"The work is divided into three independent papers:
PAPER I:
Thermal evolution models are presented for Ganymede, assuming a mostly differentiated initial state of a water ocean overlying a rock layer. The only heat sources are assumed to be primordial heat (provided by accretion) and the long-lived radiogenic heat sources in the rock component. As Ganymede cools, the ocean thins, and two ice layers develop, one above composed of ice I, and the other below composed of high-pressure polymorphs of ice. Subsolidus convection proceeds separately in each ice layer, its transport of heat calculated using a simple parameterized convection scheme and the most recent data on ice rheology. The model requires that the average entropy of the deep ice layer exceed that of the ice I layer. If the residual ocean separating these layers becomes thin enough, then a Rayleigh-Taylor-like (\"diapiric\") instability may ensue, driven by the greater entropy of the deeper ice and merging the two ice mantles into a single convective layer. This instability is not predicted by linear analysis but occurs for plausible finite amplitude perturbations associated with large Rayleigh number convection. The resulting warm ice diapirs may lead to a dramatic \"heat pulse\" at the surface and to fracturing of the lithosphere, and may be directly or indirectly responsible for resurfacing and grooved terrain formation on Ganymede. The timing of this event depends rather sensitively on poorly known rheological parameters but could be consistent with chronologies deduced from estimated cratering rates. Irrespective of the occurrence or importance of the heat pulse, we find that lithospheric fracturing requires rapid stress loading (on a timescale ≾ 104) years). Such a timescale can be realized by warm ice diapirism, but not directly by gradual global expansion. In the absence of any quantitative and self-consistent model for the resurfacing of Ganymede by liquid water, we favor resurfacing by warm ice flows,which we demonstrate to be physically possible, a plausible consequence of our models, compatible with existing observations, and a hypothesis testable by Galileo. We discuss core formation as an alternative driver for resurfacing, and conclude that it is less attractive. We also consider anew the puzzle of why Callisto differs so greatly from Ganymede, offering several possible explanations. The models presented do not provide a compelling explanation for all aspects of Ganymedean geological evolution, since we have identified several potential problems, most notably the apparently extended period of grooved terrain formation (several hundred million years), which is difficult to reconcile with the heat pulse phenomenon.
PAPER II:
The observed zonal flows of the giant planets will, if they penetrate below the visible atmosphere, interact significantly with the planetary magnetic field outside the metalized core. The appropriate measure of this interaction is the Chandrasekhar number Q = (H2)/(4πρνα2λ) (where H = radial component of the magnetic field, ν = eddy viscosity, λ = magnetic diffusivity, α-1 = lengthscale on which λ varies); at depths where Q ≳ 1 the velocity will be forced to oscillate on a small lengthscale or decay to zero. We estimate the conductivity due to semiconduction in H2 (Jupiter, Saturn) and ionization in H2O (Uranus, Neptune) as a function of depth; the value λ ≃ 1010 cm2s-1 needed for Q = 1 is readily obtained well outside the metallic core (where λ ≃ 102 cm2s-1).
These assertions are quantified by a simple model of the equatorial zonal jet in which the flow is assumed uniform on cylinders concentric with the spin axis, and the viscous and magnetic torques on each cylinder are balanced. We solve this \"Taylor constraint\" simultaneously with the dynamo equation to obtain the velocity and magnetic field in the equatorial plane. With this model we reproduce the widely differing jet widths of Jupiter and Saturn (though not the flow at very high or low latitudes) using ν = 2500 cm2s-1, consistent with the requirement that viscous dissipation not exceed the specific luminosity. A model Uranian jet consistent with the limited Voyager data can also be constructed, with appropriately smaller ν, but only if one assumes a two-layer interior. We tentatively predict a wide Neptunian jet.
For Saturn (but not Jupiter or Uranus) the model has a large magnetic Reynolds number where Q = 1 and hence exhibits substantial axisymmetrization of the field in the equatorial plane. This effect may or may not persist at higher latitudes. The one-dimensional model presented is only a first step. Variation of the velocity and magnetic field parallel to the spin axis must be modeled in order to answer several important questions, including: 1) What is the behavior of flows at high latitudes, whose Taylor cylinders are interrupted by the region with Q ≳ 1? 2) To what extent is differential rotation in the envelope responsible for the spin-axisymmetry of Saturn's magnetic field?
PAPER III:
It is shown that the problem of two-dimensional photoclinometry (PC) -- the reconstruction of a surface z(x,y) from a brightness image B(x,y) -- may be formulated in a natural way in terms of finite elements. The resulting system of equations is underdetermined as a consequence of the lack of boundary conditions for z, but a unique solution may be chosen by minimizing a function S expressing the \"roughness\" of the surface. An efficient PC algorithm based on this formulation is presented, requiring ~ 10.66 (four-byte) memory locations and ~104 floating multiplications/additions per pixel, and incorporating: 1) Minimization of the roughness by the penalty method, which yields the smallest set of equations. 2) Iterative solution of the nonlinear equations by Newton's method. 3) Solution of the linearized equations by an inner iterative cycle of successive over-relaxation, which takes advantage of the extreme sparseness of the system. 4) Multigridding, in which the solutions to the smaller problems obtained by reducing the resolution are used recursively to greatly speed convergence at the higher resolutions, and 5) A rapid noniterative initial estimate of z obtained by exploiting the special symmetry of the equations obtained in the first linearization.
The algorithm is extensively demonstrated on 200 by 200 pixel synthetic \"images\" generated from digital topographic data for northern Utah over a range of phase angles. Rms error in the solution is ~ 22 m, out of ~ 660 m total relief. The error is dominated by \"stripes\" with the same azimuth as the light source, resulting from use of the roughness criterion in lieu of boundary conditions; the rms error along profiles parallel to the stripes is only ~ 2-8 m, depending on the phase angle. Satisfactory solutions are obtained even in the presence of quantization error, noise, and moderate blur in the image.
Applications of the PC algorithm to both remote sensing and photomicrography are sketched; a photoclinometric map of a low-relief Precambrian era fossil is presented as an example of the latter. Prospects for dealing with photometrically inhomogeneous surfaces, and an extension of the method to the analysis of side-looking radar data (\"radarclinometry\") are also discussed.
","language":"English","publisher":"California Institute of Technology","publisherLocation":"Pasadena, California","doi":"10.7907/T5PT-S948","usgsCitation":"Kirk, R.L., 1987, I. Thermal evolution of Ganymede and implications for surface features. II. Magnetohydrodynamic constraints on deep zonal flow in the giant planets. III. A fast finite-element algorithm for two-dimensional photoclinometry, 272 p., https://doi.org/10.7907/T5PT-S948.","productDescription":"272 p.","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":360219,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Ganymede","publicComments":"Submitted for a Doctorate degree in Philosophy.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c122c5de4b034bf6a856a40","contributors":{"authors":[{"text":"Kirk, Randolph L. 0000-0003-0842-9226 rkirk@usgs.gov","orcid":"https://orcid.org/0000-0003-0842-9226","contributorId":2765,"corporation":false,"usgs":true,"family":"Kirk","given":"Randolph","email":"rkirk@usgs.gov","middleInitial":"L.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":754064,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":28607,"text":"wri874142 - 1987 - Analysis of trends in water-quality data for water conservation area 3A, the Everglades, Florida","interactions":[],"lastModifiedDate":"2022-01-06T18:06:27.081865","indexId":"wri874142","displayToPublicDate":"1987-01-01T20:50:00","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"87-4142","title":"Analysis of trends in water-quality data for water conservation area 3A, the Everglades, Florida","docAbstract":"Rainfall and water-quality data bases from the South Florida Water Management District were used to evaluate water quality trends at 10 locations near or in Water Conservation Area 3A in The Everglades. The Seasonal Kendall test was applied to specific conductance, orthophosphate-phosphorus, nitrate-nitrogen, total Kjeldahl nitrogen, and total nitrogen regression residuals for the period 1978-82. Residuals of orthophosphate and nitrate quadratic models, based on antecedent 7-day rainfall at inflow gate S-11B, were the only two constituent-structure pairs that showed apparent significant (p < 0.05) increases in constituent concentrations. Elimination of regression models with distinct residual patterns and data outlines resulted in 17 statistically significant station water quality combinations for trend analysis. No water quality trends were observed.
The 1979 Memorandum of Agreement outlining the water quality monitoring program between the Everglades National Park and the U.S. Army Corps of Engineers stressed collection four times a year at three stations, and extensive coverage of water quality properties. Trend analysis and other rigorous statistical evaluation programs are better suited to data monitoring programs that include more frequent sampling and that are organized in a water quality data management system. Pronounced areal differences in water quality suggest that a water quality monitoring system for Shark River Slough in Everglades National Park include collection locations near the source of inflow to Water Conservation Area 3A. (Author 's abstract)
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri874142","collaboration":"Prepared in cooperation with the National Park Service and the South Florida Water Management District","usgsCitation":"Mattraw, H.C., Scheidt, D.J., and Federico, A.C., 1987, Analysis of trends in water-quality data for water conservation area 3A, the Everglades, Florida: U.S. Geological Survey Water-Resources Investigations Report 87-4142, iv, 52 p., https://doi.org/10.3133/wri874142.","productDescription":"iv, 52 p.","costCenters":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"links":[{"id":57435,"rank":299,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1987/4142/wri874142.pdf","text":"Report","size":"1.27 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":123628,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1987/4142/coverthb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades National Park, Water Conservation Area 3A","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -80.82916259765625,\n 25.759082934951692\n ],\n [\n -80.69732666015625,\n 25.762793355586627\n ],\n [\n -80.45974731445312,\n 26.061717616104055\n ],\n [\n -80.44189453125,\n 26.0629512662096\n ],\n [\n -80.44464111328125,\n 26.11475283424124\n ],\n [\n -80.45974731445312,\n 26.149274465676672\n ],\n [\n -80.70968627929688,\n 26.152972606566966\n ],\n [\n -80.78521728515625,\n 26.159135914254378\n ],\n [\n -80.78109741210938,\n 25.98150251402977\n ],\n [\n -80.83740234375,\n 25.980268007469803\n ],\n [\n -80.83602905273436,\n 25.923466700919274\n ],\n [\n -80.8648681640625,\n 25.794945475649673\n ],\n [\n -80.82916259765625,\n 25.759082934951692\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Caribbean-Florida Water Science Center
U.S. Geological Survey
3321 College Avenue
Davie, FL 33314
A nationwide State-Federal cooperative study was initiated in 1978 to examine effects of September hunting on nesting mourning doves (Zenaida macroura). This study was designed to (1) determine the proportion of the annual total of dove nesting activity and production that occurs in September and October, and (2) determine if survival rates of mourning dove eggs and nestlings are lower in zones where early September dove hunting is permitted than in zones where it is prohibited.
\nDuring 1979 and 1980, 6,950 active nests were monitored to obtain data on nesting patterns. Nest initiation was estimated using two measurements, backdating from hatch dates and counting numbers of nests found for the first time. The nationwide percentage of the annual total of nests that were initiated in September and October was 1.0% based on backdating from hatch dates and 2.7% based on nests found for the first time. Nesting activity was measured by numbers of eggs and nestlings present in weekly counts. Nationally, 4.5% of the annual nesting activity occurred in September and October. The activity of 80% of the observed nests was within the period of 22 April to 4 September. The measure of production used in this study was numbers of young fledged. Nationally, 10.3% of all observed fledging occurred in September and October. Because a decline in nests found in the latter half of the nesting season preceded the 1 September start of hunting, we concluded that the reduction in nesting activity at the end of the season is a natural phenomenon and is not caused by hunting disturbance.
\nIn a separate part of this study, we estimated survival rates in adjacent hunted and nonhunted zones from data on 668 nests. The estimated daily survival rates for individual eggs and nestlings were 95.8% in the nonhunted and 95.0% in the hunted zones; the corresponding fledging rates were 33 and 26%, respectively. The fledging rates are lower because they are the daily survival rates operating over a 26-day nesting period. Neither differences in survival nor fledging rates between nonhunted and hunted zones were found to be statistically significant (P > 0.05). We determined that the statistical test was powerful enough to detect a reduction due to hunting from a hypothetical 96.0 to 94.2% in daily nestling survival rates (from 35 to 21 o/o in fledging rates) with 80% probability. An undetected reduction in fledging rate of that magnitude would probably reduce the overall fledging rate by less than 1 percentage point, because only a small proportion of the nesting doves are exposed to hunting for the full 26-day nesting cycle.
\nIn conclusion, we found that only a small proportion of total annual nesting attempts occurred after the start of hunting season. There was no statistically significant difference in survival rates in zones where hunting was permitted compared with zones where it was prohibited. We concluded from this study that dove hunting under current regulations has no substantial effect on recruitment of fledglings into the mourning dove population.
","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, D.C.","usgsCitation":"Geissler, P.H., Dolton, D., Field, R., Coon, R.A., Percival, H.F., Hayne, D.W., Soileau, L.D., George, R.R., Dunks, J.H., and Bunnell, S.D., 1987, Mourning dove nesting: Seasonal patterns and effects of September hunting: Resource Publication 168, iv, 33 p.","productDescription":"iv, 33 p.","numberOfPages":"41","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":289884,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":289883,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/rp/0168/report.pdf"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.8,24.5 ], [ -124.8,49.383333 ], [ -66.95,49.383333 ], [ -66.95,24.5 ], [ -124.8,24.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53aa9df9e4b065055fab1672","contributors":{"authors":[{"text":"Geissler, Paul H.","contributorId":33746,"corporation":false,"usgs":true,"family":"Geissler","given":"Paul","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":495294,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dolton, David D.","contributorId":100452,"corporation":false,"usgs":true,"family":"Dolton","given":"David D.","affiliations":[],"preferred":false,"id":495301,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Field, Rebecca","contributorId":86692,"corporation":false,"usgs":true,"family":"Field","given":"Rebecca","email":"","affiliations":[],"preferred":false,"id":495298,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coon, Richard A.","contributorId":46827,"corporation":false,"usgs":true,"family":"Coon","given":"Richard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":495295,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Percival, H. Franklin percivalf@usgs.gov","contributorId":2424,"corporation":false,"usgs":true,"family":"Percival","given":"H.","email":"percivalf@usgs.gov","middleInitial":"Franklin","affiliations":[],"preferred":true,"id":495293,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hayne, Don W.","contributorId":61750,"corporation":false,"usgs":true,"family":"Hayne","given":"Don","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":495296,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Soileau, Lawrence D.","contributorId":106805,"corporation":false,"usgs":true,"family":"Soileau","given":"Lawrence","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":495302,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"George, Ronnie R.","contributorId":90218,"corporation":false,"usgs":true,"family":"George","given":"Ronnie","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":495299,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Dunks, James H.","contributorId":72067,"corporation":false,"usgs":true,"family":"Dunks","given":"James","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":495297,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Bunnell, S. Dwight","contributorId":100292,"corporation":false,"usgs":true,"family":"Bunnell","given":"S.","email":"","middleInitial":"Dwight","affiliations":[],"preferred":false,"id":495300,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70201404,"text":"70201404 - 1987 - Thermal evolution of a differentiated Ganymede and implications for surface features","interactions":[],"lastModifiedDate":"2018-12-12T13:59:53","indexId":"70201404","displayToPublicDate":"1987-01-01T13:59:21","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1963,"text":"Icarus","active":true,"publicationSubtype":{"id":10}},"title":"Thermal evolution of a differentiated Ganymede and implications for surface features","docAbstract":"Thermal evolution models are presented for Ganymede, assuming a mostly differentiated initial state of a water ocean overlying a rock layer. The only heat sources are assumed to be primordial heat (provided by accretion) and the long-lived radiogenic heat sources in the rock component. As Ganymede cools, the ocean thins, and two ice layers develop, one above composed of ice I, and the other below composed of high-pressure polymorphs of ice. Subsolidus convection proceeds separately in each ice layer, its transport of heat calculated using a simple parameterized convection scheme and the most recent data on ice rheology. The model requires that the average entropy of the deep ice layer exceeds that of the ice I layer. If the residual ocean separating these layers becomes thin enough, then a Rayleigh-Taylor-like (“diapiric”) instability may ensue, driven by the greater entropy of the deeper ice and merging the two ice mantles into a single convective layer. This instability is not predicted by linear analysis but occurs for plausible finite amplitude perturbations associated with large Rayleigh number convection. The resulting warm ice diapirs may lead to a dramatic “heat pulse” at the surface and to fracturing of the lithosphere, and may be directly or indirectly responsible for resurfacing and grooved terrain formation on Ganymede. The timing of this event depends rather sensitively on poorly known rheological parameters, but could be consistent with chronologies deduced from estimated cratering rates. Irrespective of the occurrence or importance of the heat pulse, we find that lithospheric fracturing requires rapid stress loading (on a time scale ⪅104 years). Such a time scale can be realized by warm ice diapirism, but not directly by gradual global expansion. In the absence of any quantitative and self-consistent model for the resurfacing of Ganymede by liquid water, we favor resurfacing by warm ice flows, which we demonstrate to be physically possible, a plausible consequence of our models, compatible with existing observations, and a hypothesis testable by Galileo. We discuss core formation as an alternative driver for resurfacing, and conclude that it is less attractive. We also consider anew the puzzle of why Callisto differs so greatly from Ganymede, offering several possible explanations. The models presented do not provide a compelling explanation for all aspects of Ganymedean geological evolution, since we have identified several potential problems, most notably the apparently extended period of grooved terrain formation (several hundred million years), which is difficult to reconcile with the heat pulse phenomenon.
","language":"English","publisher":"Academic Press","doi":"10.1016/0019-1035(87)90009-1","usgsCitation":"Kirk, R.L., and Stevenson, D.J., 1987, Thermal evolution of a differentiated Ganymede and implications for surface features: Icarus, v. 69, no. 1, p. 91-134, https://doi.org/10.1016/0019-1035(87)90009-1.","productDescription":"44 p.","startPage":"91","endPage":"134","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":360216,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Ganymede","volume":"69","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c122c5de4b034bf6a856a46","contributors":{"authors":[{"text":"Kirk, Randolph L. 0000-0003-0842-9226 rkirk@usgs.gov","orcid":"https://orcid.org/0000-0003-0842-9226","contributorId":2765,"corporation":false,"usgs":true,"family":"Kirk","given":"Randolph","email":"rkirk@usgs.gov","middleInitial":"L.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":754053,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stevenson, David J.","contributorId":211426,"corporation":false,"usgs":false,"family":"Stevenson","given":"David","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":754054,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70121407,"text":"70121407 - 1987 - Mitigation evaluation data base draft user's guide","interactions":[],"lastModifiedDate":"2014-08-21T13:52:59","indexId":"70121407","displayToPublicDate":"1987-01-01T13:52:40","publicationYear":"1987","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"seriesNumber":"NERC-88/01","title":"Mitigation evaluation data base draft user's guide","docAbstract":"No abstract available.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Hamilton, D.B., and Roelle, J.E., 1987, Mitigation evaluation data base draft user's guide, 46 p.","productDescription":"46 p.","numberOfPages":"46","costCenters":[],"links":[{"id":292795,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f707dfe4b05ec1f2431bff","contributors":{"authors":[{"text":"Hamilton, D. B.","contributorId":79553,"corporation":false,"usgs":true,"family":"Hamilton","given":"D.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":499050,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roelle, J. E.","contributorId":91066,"corporation":false,"usgs":true,"family":"Roelle","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":499051,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70201403,"text":"70201403 - 1987 - Hydromagnetic constraints on deep zonal flows in the giant planets","interactions":[],"lastModifiedDate":"2018-12-12T13:49:14","indexId":"70201403","displayToPublicDate":"1987-01-01T13:48:19","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":917,"text":"Astrophysical Journal","active":true,"publicationSubtype":{"id":10}},"title":"Hydromagnetic constraints on deep zonal flows in the giant planets","docAbstract":"The observed zonal flows of the giant planets will, if they penetrate below the visible atmosphere, interact significantly with the planetary magnetic field outside the metallized core. The appropriate measure of this interaction is the Chandrasekhar number Q = H^2 /4πρνα^2 λ (H = radial component of the magnetic field, ν = eddy viscosity, λ = magnetic diffusivity, α^-1 = length scale on which λ varies); at depths where Q ≳ 1, the velocity will be forced to oscillate on a small length scale or decay to zero. We estimate the conductivity due to semiconduction in H_2 (Jupiter, Saturn) and ionization in H_(2)0 (Uranus, Neptune) as a function of depth; the value λ ≈ 10^10 cm^2 s^-1 needed for Q = 1 is readily obtained well outside the metallic core (where A ≈ 10^2 cm^2 s^-1). These assertions are quantified by a simple model of the equatorial zonal jet in which the flow is assumed uniform on cylinders concentric with the spin axis, and viscous and magnetic torques on each cylinder are balanced. We solve this \"Taylor constraint\" simultaneously with the dynamo equation to obtain the velocity and magnetic field in the equatorial plane. With this model we reproduce the widely differing jet widths of Jupiter and Saturn (though not the flow at very high or low latitudes) using v = 2500 cm^2 s^-1, consistent with the requirement that viscous dissipation not exceed the specific luminosity. A model Uranian jet consistent with the limited Voyager data can also be constructed, with appropriately smaller v, but only if one assumes a two-layer interior. We tentatively predict a wide Neptunian jet. For Saturn (but not Jupiter or Uranus) the model has a large magnetic Reynolds number where Q = 1 and hence exhibits substantial axisymmetrization of the field in the equatorial plane. This effect may or may not persist at higher latitudes. The one-dimensional model presented is only a first step. Variation of the velocity and magnetic field parallel to the spin axis must be modeled in order to answer several important questions, including: (1) What is the behavior of flows at high latitudes, whose Taylor cylinders are interrupted by the region with Q > 1? (2) To what extent is differential rotation in the envelope responsible for the spinaxisymmetry of Saturn's magnetic field?
","language":"English","publisher":"American Astronomical Society","doi":"10.1086/165248","issn":"0004-637X","usgsCitation":"Kirk, R.L., and Stevenson, D.J., 1987, Hydromagnetic constraints on deep zonal flows in the giant planets: Astrophysical Journal, v. 316, no. 2, p. 836-846, https://doi.org/10.1086/165248.","productDescription":"11 p.","startPage":"836","endPage":"846","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":480084,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://resolver.caltech.edu/CaltechAUTHORS:20140312-094653599","text":"External Repository"},{"id":360215,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Neptune; Saturn; Uranus","volume":"316","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c122c5ee4b034bf6a856a4b","contributors":{"authors":[{"text":"Kirk, Randolph L. 0000-0003-0842-9226 rkirk@usgs.gov","orcid":"https://orcid.org/0000-0003-0842-9226","contributorId":2765,"corporation":false,"usgs":true,"family":"Kirk","given":"Randolph","email":"rkirk@usgs.gov","middleInitial":"L.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":754051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stevenson, David J.","contributorId":211426,"corporation":false,"usgs":false,"family":"Stevenson","given":"David","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":754052,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70121522,"text":"70121522 - 1987 - Prospects for Yellowstone grizzly bears","interactions":[],"lastModifiedDate":"2023-08-25T15:00:24.756253","indexId":"70121522","displayToPublicDate":"1987-01-01T11:49:55","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":978,"text":"Bears: Their Biology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Prospects for Yellowstone grizzly bears","docAbstract":"Recent analyses of data on the grizzly bear (Ursus arctos horribilis) population of Yellowstone National Park and its environs suggest the likelihood of a continuing decline in numbers if losses of fully adult females are not reduced. The size of the population is not known, and a simple projection model has been used to identify some inconsistencies in the available index data. Population dynamics calculations, based on Lotka's equation or a stochastic model, indicate a continuing decrease in numbers, although continued observations through radio-telemetry are needed to verify these trends. The margin between stabilizing the population and a continued decrease appears to be roughly the loss of 2 fully adult female bears per year. At present, the risk of extirpation of this population over the next 30 years appears to be small. Continued monitoring of survivorship will be needed, particularly because \"recovery\" of the population may be mainly characterized by a shift in the pattern of mortality, from adults to subadults, and not necessarily a reduction in absolute number of losses.","language":"English","publisher":"International Association for Bear Research and Management","doi":"10.2307/3872606","usgsCitation":"Knight, R., and Eberhardt, L., 1987, Prospects for Yellowstone grizzly bears: Bears: Their Biology and Management, v. 7, p. 45-50, https://doi.org/10.2307/3872606.","productDescription":"6 p.","startPage":"45","endPage":"50","numberOfPages":"6","costCenters":[],"links":[{"id":292871,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho, Montana, Wyoming","otherGeospatial":"Yellowstone National Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.156,44.1324 ], [ -111.156,45.109 ], [ -109.8242,45.109 ], [ -109.8242,44.1324 ], [ -111.156,44.1324 ] ] ] } } ] }","volume":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f85980e4b03f038c5c18a6","contributors":{"authors":[{"text":"Knight, R.R.","contributorId":59063,"corporation":false,"usgs":true,"family":"Knight","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":499158,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eberhardt, L.L.","contributorId":72313,"corporation":false,"usgs":true,"family":"Eberhardt","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":499159,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70236862,"text":"70236862 - 1987 - Using AVHRR data to evaluate the greenness variability within monitoring polygons","interactions":[],"lastModifiedDate":"2022-09-20T15:52:43.505512","indexId":"70236862","displayToPublicDate":"1987-01-01T10:49:53","publicationYear":"1987","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Using AVHRR data to evaluate the greenness variability within monitoring polygons","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Canadian symposium on remote sensing, 10th: Proceedings","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Canadian Symposium on Remote Sensing, 10th","conferenceDate":"May 5, 1986","conferenceLocation":"Edmonton, Alberta, Canada","language":"English","publisher":"Canadian Aeronautics and Space Institute","usgsCitation":"Westin, F.C., Ohlen, D.O., and Moore, D.G., 1987, Using AVHRR data to evaluate the greenness variability within monitoring polygons, in Canadian symposium on remote sensing, 10th: Proceedings, Edmonton, Alberta, Canada, May 5, 1986, p. 265-271.","productDescription":"7 p.","startPage":"265","endPage":"271","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":407062,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Westin, F. C.","contributorId":296753,"corporation":false,"usgs":false,"family":"Westin","given":"F.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":852392,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ohlen, Donald O. ohlen@usgs.gov","contributorId":3779,"corporation":false,"usgs":true,"family":"Ohlen","given":"Donald","email":"ohlen@usgs.gov","middleInitial":"O.","affiliations":[],"preferred":true,"id":852393,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moore, D. G.","contributorId":7285,"corporation":false,"usgs":true,"family":"Moore","given":"D.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":852394,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}