{"pageNumber":"1529","pageRowStart":"38200","pageSize":"25","recordCount":40818,"records":[{"id":70011535,"text":"70011535 - 1982 - Earthquake location in island arcs","interactions":[],"lastModifiedDate":"2013-02-13T13:38:11","indexId":"70011535","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3071,"text":"Physics of the Earth and Planetary Interiors","active":true,"publicationSubtype":{"id":10}},"title":"Earthquake location in island arcs","docAbstract":"A comprehensive data set of selected teleseismic P-wave arrivals and local-network P- and S-wave arrivals from large earthquakes occurring at all depths within a small section of the central Aleutians is used to examine the general problem of earthquake location in island arcs. Reference hypocenters for this special data set are determined for shallow earthquakes from local-network data and for deep earthquakes from combined local and teleseismic data by joint inversion for structure and location. The high-velocity lithospheric slab beneath the central Aleutians may displace hypocenters that are located using spherically symmetric Earth models; the amount of displacement depends on the position of the earthquakes with respect to the slab and on whether local or teleseismic data are used to locate the earthquakes. Hypocenters for trench and intermediate-depth events appear to be minimally biased by the effects of slab structure on rays to teleseismic stations. However, locations of intermediate-depth events based on only local data are systematically displaced southwards, the magnitude of the displacement being proportional to depth. Shallow-focus events along the main thrust zone, although well located using only local-network data, are severely shifted northwards and deeper, with displacements as large as 50 km, by slab effects on teleseismic travel times. Hypocenters determined by a method that utilizes seismic ray tracing through a three-dimensional velocity model of the subduction zone, derived by thermal modeling, are compared to results obtained by the method of joint hypocenter determination (JHD) that formally assumes a laterally homogeneous velocity model over the source region and treats all raypath anomalies as constant station corrections to the travel-time curve. The ray-tracing method has the theoretical advantage that it accounts for variations in travel-time anomalies within a group of events distributed over a sizable region of a dipping, high-velocity lithospheric slab. In application, JHD has the practical advantage that it does not require the specification of a theoretical velocity model for the slab. Considering earthquakes within a 260 km long by 60 km wide section of the Aleutian main thrust zone, our results suggest that the theoretical velocity structure of the slab is presently not sufficiently well known that accurate locations can be obtained independently of locally recorded data. Using a locally recorded earthquake as a calibration event, JHD gave excellent results over the entire section of the main thrust zone here studied, without showing a strong effect that might be attributed to spatially varying source-station anomalies. We also calibrated the ray-tracing method using locally recorded data and obtained results generally similar to those obtained by JHD. ?? 1982.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Physics of the Earth and Planetary Interiors","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0031-9201(82)90099-1","issn":"00319201","usgsCitation":"Engdahl, E., Dewey, J.W., and Fujita, K., 1982, Earthquake location in island arcs: Physics of the Earth and Planetary Interiors, v. 30, no. 2-3, p. 145-156, https://doi.org/10.1016/0031-9201(82)90099-1.","startPage":"145","endPage":"156","numberOfPages":"12","costCenters":[],"links":[{"id":220711,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267343,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0031-9201(82)90099-1"}],"volume":"30","issue":"2-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a04f7e4b0c8380cd50bbc","contributors":{"authors":[{"text":"Engdahl, E.R.","contributorId":22906,"corporation":false,"usgs":true,"family":"Engdahl","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":361345,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dewey, J. W.","contributorId":31008,"corporation":false,"usgs":true,"family":"Dewey","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":361346,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fujita, K.","contributorId":87935,"corporation":false,"usgs":true,"family":"Fujita","given":"K.","email":"","affiliations":[],"preferred":false,"id":361347,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70175019,"text":"70175019 - 1982 - Modeling of tidal and residual circulation in San Francisco Bay, California","interactions":[],"lastModifiedDate":"2016-07-26T16:09:30","indexId":"70175019","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Modeling of tidal and residual circulation in San Francisco Bay, California","docAbstract":"

Several numerical models have been developed and implemented to simulate tidal and residual circulation in San Francisco Bay. Because of a broad distribution in time scales, hydrodynamic models must be formulated to account for the proper time and spatial scales which dominate the transport processes. A complete current survey of the San Francisco Bay system was conducted jointly between NOS/NOAA and USGS (Patchen and Cheng, 1979). Presently, these current meter data are being processed and analyzed, and concurrently further development of tidal and residual circulation models continues. When these data become available, they will be used to calibrate the numerical models and to guide refinement of hydrodynamic models in order to maximize our understanding of the Bay system. Our modeling efforts will be extended to the northern reach of the Bay system.

","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Proceedings, Seminar on 2-D Flows","conferenceTitle":"Seminar on 2-D Flows","conferenceDate":"July 1981","conferenceLocation":"Davis, Calif.","language":"English","publisher":"U.S. Army Corps of Engineers","usgsCitation":"Cheng, R.T., 1982, Modeling of tidal and residual circulation in San Francisco Bay, California, in Proceedings, Seminar on 2-D Flows, Davis, Calif., July 1981, p. 172-185.","productDescription":"16 p.","startPage":"172","endPage":"185","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":325674,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"579889bce4b0589fa1c6bac6","contributors":{"authors":[{"text":"Cheng, R. T.","contributorId":23138,"corporation":false,"usgs":false,"family":"Cheng","given":"R.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":643618,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011604,"text":"70011604 - 1982 - Regional thermal-inertia mapping from an experimental satellite","interactions":[],"lastModifiedDate":"2024-04-18T16:34:53.386785","indexId":"70011604","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Regional thermal-inertia mapping from an experimental satellite","docAbstract":"

A new experimental satellite has provided, for the first time, thermal data that should be useful in reconnaissance geologic exploration. Thermal inertia, a property of geologic materials, can be mapped from these data by applying an algorithm that has been developed using a new thermal model. A simple registration procedure was used on a pair of day and night images of the Powder River basin, Wyoming, to illustrate the method. Preliminary assessment of these satellite data suggests that they will be of significant use for resource exploration when used in conjunction with other geologic, geophysical, and geochemical data.

","language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.1190/1.1441317","issn":"00168033","usgsCitation":"Watson, K., 1982, Regional thermal-inertia mapping from an experimental satellite: Geophysics, v. 47, no. 12, p. 1681-1687, https://doi.org/10.1190/1.1441317.","productDescription":"7 p.","startPage":"1681","endPage":"1687","numberOfPages":"7","costCenters":[],"links":[{"id":220780,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a58ee4b0e8fec6cdbe67","contributors":{"authors":[{"text":"Watson, K.","contributorId":39123,"corporation":false,"usgs":true,"family":"Watson","given":"K.","email":"","affiliations":[],"preferred":false,"id":361524,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70174596,"text":"70174596 - 1982 - Low-frequency variations in sea level and currents in south San Francisco Bay","interactions":[],"lastModifiedDate":"2016-07-27T15:41:46","indexId":"70174596","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2426,"text":"Journal of Physical Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Low-frequency variations in sea level and currents in south San Francisco Bay","docAbstract":"

In order to examine physical process in the subtidal time range, sea-level and current meter data for south San Francisco Bay (South Bay) were filtered using a low-pass digital filter to remove tidal period variations. and then subjected to an empirical orthogonal function analysis. For the sea-level data, there is one dominant empirical mode that is correlated with nonlocal coastal forcing. A small amount of the variance is associated with local wind setup. For the current meter data, there are two dominant empirical modes that correlate with local wind forcing and tidal forcing over the spring-neap cycle. In general, South Bay is dominated by coastal forcing on sea level during all seasons, and dominated by wind and tidal forcing on the residual currants during the summer.

","language":"English","publisher":"American Meteorological Society","doi":"10.1175/1520-0485(1982)012<0658:LFVISL>2.0.CO;2","usgsCitation":"Walters, R.A., 1982, Low-frequency variations in sea level and currents in south San Francisco Bay: Journal of Physical Oceanography, v. 12, p. 658-668, https://doi.org/10.1175/1520-0485(1982)012<0658:LFVISL>2.0.CO;2.","productDescription":"11 p.","startPage":"658","endPage":"668","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":480555,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/1520-0485(1982)012<0658:lfvisl>2.0.co;2","text":"Publisher Index Page"},{"id":325198,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.47695922851562,\n 37.41816326969145\n ],\n [\n -122.47695922851562,\n 37.832564787218985\n ],\n [\n -121.90292358398438,\n 37.832564787218985\n ],\n [\n -121.90292358398438,\n 37.41816326969145\n ],\n [\n -122.47695922851562,\n 37.41816326969145\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5787662fe4b0d27deb36e18e","contributors":{"authors":[{"text":"Walters, Roy A.","contributorId":74877,"corporation":false,"usgs":true,"family":"Walters","given":"Roy","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":642400,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011243,"text":"70011243 - 1982 - An analysis of input errors in precipitation-runoff models using regression with errors in the independent variables","interactions":[],"lastModifiedDate":"2018-02-05T12:39:08","indexId":"70011243","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"An analysis of input errors in precipitation-runoff models using regression with errors in the independent variables","docAbstract":"

Errors in runoff prediction caused by input data errors are analyzed by treating precipitation-runoff models as regression (conditional expectation) models. Independent variables of the regression consist of precipitation and other input measurements; the dependent variable is runoff. In models using erroneous input data, prediction errors are inflated and estimates of expected storm runoff for given observed input variables are biased. This bias in expected runoff estimation results in biased parameter estimates if these parameter estimates are obtained by a least squares fit of predicted to observed runoff values. The problems of error inflation and bias are examined in detail for a simple linear regression of runoff on rainfall and for a nonlinear U.S. Geological Survey precipitation-runoff model. Some implications for flood frequency analysis are considered. A case study using a set of data from Turtle Creek near Dallas, Texas illustrates the problems of model input errors.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i004p00947","usgsCitation":"Troutman, B.M., 1982, An analysis of input errors in precipitation-runoff models using regression with errors in the independent variables: Water Resources Research, v. 18, no. 4, p. 947-964, https://doi.org/10.1029/WR018i004p00947.","productDescription":"18 p.","startPage":"947","endPage":"964","costCenters":[],"links":[{"id":221434,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","city":"Dallas","otherGeospatial":"Turtle Creek","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -96.81529998779297,\n 32.79275826977453\n ],\n [\n -96.78749084472655,\n 32.79275826977453\n ],\n [\n -96.78749084472655,\n 32.85132662142229\n ],\n [\n -96.81529998779297,\n 32.85132662142229\n ],\n [\n -96.81529998779297,\n 32.79275826977453\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"18","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"5059e9f0e4b0c8380cd4853d","contributors":{"authors":[{"text":"Troutman, Brent M.","contributorId":195329,"corporation":false,"usgs":false,"family":"Troutman","given":"Brent","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":360648,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011651,"text":"70011651 - 1982 - Stratigraphic reference section for Georges Bank Basin - Depositional model for New England passive margin.","interactions":[],"lastModifiedDate":"2023-01-11T15:45:15.430432","indexId":"70011651","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Stratigraphic reference section for Georges Bank Basin - Depositional model for New England passive margin.","docAbstract":"

A multichannel seismic reflection profile (U.S. Geological Survey line 19), calibrated with the COST G-1, COST G-2, and Shell Mohican I-100 wells, and seismic-sequence analysis shows that the chronostratigraphic and lithostratigraphic units and depositional history of the Georges Bank basin are similar to those of the Scotian basin. Carbonate rocks of the Iroquois and Abenaki Formations, as much as 16,000 ft (4,800 m) thick, dominated the eastern half of the Georges Bank basin during the Jurassic. As much as 7,500 ft (2,300 m) of the coeval terrigenous clastic deposits of the Mohican, Mohawk, and Mic Mac Formations accumulated updip (westward) in sublittoral, paralic, and nonmarine environments. Siliciclastic deposition, as much as 6,000 ft (1,800 m), dominated the entire basin throughout the Cretaceous and Cenozoic, and it was punctuated briefly by carbonate deposition during the Hauterivian and Paleogene. Tentative correlation between the Georges Bank basin sequences and those of the adjacent, deep North American basin suggests that the deep-sea facies were strongly influenced by depositional events on the shelf. Deposition in both areas has been sensitive to changes in sea level and to paleoclimatic cycles.

","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/03B5A633-16D1-11D7-8645000102C1865D","usgsCitation":"Poag, C.W., 1982, Stratigraphic reference section for Georges Bank Basin - Depositional model for New England passive margin.: American Association of Petroleum Geologists Bulletin, v. 66, no. 8, p. 1021-1041, https://doi.org/10.1306/03B5A633-16D1-11D7-8645000102C1865D.","productDescription":"21 p.","startPage":"1021","endPage":"1041","numberOfPages":"21","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":221455,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Atlantic Ocean, Georges Bank","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -68.20863484886625,\n 42.04918841749222\n ],\n [\n -68.20863484886625,\n 40.47051861193097\n ],\n [\n -65.81281728784933,\n 40.47051861193097\n ],\n [\n -65.81281728784933,\n 42.04918841749222\n ],\n [\n -68.20863484886625,\n 42.04918841749222\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"66","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b991fe4b08c986b31c26e","contributors":{"authors":[{"text":"Poag, C. Wylie 0000-0002-6240-4065 wpoag@usgs.gov","orcid":"https://orcid.org/0000-0002-6240-4065","contributorId":2565,"corporation":false,"usgs":true,"family":"Poag","given":"C.","email":"wpoag@usgs.gov","middleInitial":"Wylie","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":361622,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011360,"text":"70011360 - 1982 - Blake Plateau: Control of Miocene sedimentation patterns by large-scale shifts of the Gulf Stream axis","interactions":[],"lastModifiedDate":"2024-02-01T12:05:26.631263","indexId":"70011360","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Blake Plateau: Control of Miocene sedimentation patterns by large-scale shifts of the Gulf Stream axis","docAbstract":"

The distribution of buried channel networks within Cenozoic sequences of the Blake Plateau and their correlation with global sea-level oscillations indicate that the Gulf Stream axis shifted landward against the Florida-Hatteras Slope during sea-level high-stands and seaward across the central Blake Plateau during sea-level lowstands. A sedimentation model incorporating axial shifts of the Gulf Stream successfully predicts the Miocene stratigraphy of the Florida-Hatteras Slope and Blake Plateau as defined by seismic and drill-hole data.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1982)10<257:BPCOMS>2.0.CO;2","issn":"00917613","usgsCitation":"Pinet, P., and Popenoe, P., 1982, Blake Plateau: Control of Miocene sedimentation patterns by large-scale shifts of the Gulf Stream axis: Geology, v. 10, no. 5, p. 257-259, https://doi.org/10.1130/0091-7613(1982)10<257:BPCOMS>2.0.CO;2.","productDescription":"3 p.","startPage":"257","endPage":"259","numberOfPages":"3","costCenters":[],"links":[{"id":221109,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1e0e4b0c8380cd4ae91","contributors":{"authors":[{"text":"Pinet, P.R.","contributorId":36290,"corporation":false,"usgs":true,"family":"Pinet","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":360911,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Popenoe, P.","contributorId":105434,"corporation":false,"usgs":true,"family":"Popenoe","given":"P.","email":"","affiliations":[],"preferred":false,"id":360912,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011792,"text":"70011792 - 1982 - The solubility of quartz in aqueous sodium chloride solution at 350°C and 180 to 500 bars","interactions":[],"lastModifiedDate":"2015-06-05T14:13:41","indexId":"70011792","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"The solubility of quartz in aqueous sodium chloride solution at 350°C and 180 to 500 bars","docAbstract":"

The solubility of quartz in 2, 3, and 4 molal NaCl was measured at 350°C and pressures ranging from 180 to 500 bars. The molal solubility in each of the salt solutions is greater than that in pure water throughout the measured pressure range, with the ratio of solubility in NaCl solution to solubility in pure water decreasing as pressure is increased. The measured solubilities are significantly higher than solubilities calculated using a simple model in which the water activity in NaCl solutions decreases either in proportion to decreasing vapor pressure of the solution as salinity is increased or in proportion to decreasing mole fraction of water in the solvent.

","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(82)90136-3","issn":"00167037","usgsCitation":"Fournier, R.O., Rosenbauer, R.J., and Bischoff, J.L., 1982, The solubility of quartz in aqueous sodium chloride solution at 350°C and 180 to 500 bars: Geochimica et Cosmochimica Acta, v. 46, no. 10, p. 1975-1978, https://doi.org/10.1016/0016-7037(82)90136-3.","productDescription":"4 p.","startPage":"1975","endPage":"1978","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":220791,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb042e4b08c986b324d3a","contributors":{"authors":[{"text":"Fournier, Robert O.","contributorId":73202,"corporation":false,"usgs":true,"family":"Fournier","given":"Robert","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":361969,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosenbauer, Robert J. brosenbauer@usgs.gov","contributorId":204,"corporation":false,"usgs":true,"family":"Rosenbauer","given":"Robert","email":"brosenbauer@usgs.gov","middleInitial":"J.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":361968,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bischoff, James L. jbischoff@usgs.gov","contributorId":1389,"corporation":false,"usgs":true,"family":"Bischoff","given":"James","email":"jbischoff@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":361967,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011811,"text":"70011811 - 1982 - Seasonal growth in the bivalve Macoma balthica near the southern limit of its range","interactions":[],"lastModifiedDate":"2020-09-02T17:41:34.917836","indexId":"70011811","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1583,"text":"Estuaries","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal growth in the bivalve Macoma balthica near the southern limit of its range","docAbstract":"

Shell-length growth in Macoma balthica from San Francisco Bay, California, as measured on living animals in situ, is highly seasonal despite a mild Mediterranean climate: a long period of near non-growth from May to the following February is followed by a short period of rapid growth between March and May. The rapid-growth period follows the spawning period during January/February and ends as water temperature rises above about 15??C. Despite the shortness of the growth period, M. balthica grows larger at a given age in San Francisco Bay than is recorded elsewhere in the world. Application of a model, developed elsewhere from these same field measurements, shows that (1) measurable growth occurs during the summer/autumn/early winter \"nongrowth\" period, (2) there is an autumn recruitment, and (3) both spring and autumn recruits combine to form a single \"one-year-old\" size grouping. None of these features is detectable through growth-ring analysis of field samples, apparently because of indistinct climatic seasons, or through size-frequency histogram analysis because of the combined effects of slow growth and intermittent recruitment. ?? 1982 Estuarine Research Federation.

","language":"English","publisher":"Springer-Verlag","doi":"10.2307/1352108","issn":"15592723","usgsCitation":"Nichols, F., and Thompson, J., 1982, Seasonal growth in the bivalve Macoma balthica near the southern limit of its range: Estuaries, v. 5, no. 2, p. 110-120, https://doi.org/10.2307/1352108.","startPage":"110","endPage":"120","numberOfPages":"11","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":221132,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88ace4b08c986b316ac9","contributors":{"authors":[{"text":"Nichols, F.H.","contributorId":88020,"corporation":false,"usgs":true,"family":"Nichols","given":"F.H.","affiliations":[],"preferred":false,"id":362012,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thompson, J.K.","contributorId":103300,"corporation":false,"usgs":true,"family":"Thompson","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":362013,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011813,"text":"70011813 - 1982 - An automatic optimum kernel-size selection technique for edge enhancement","interactions":[],"lastModifiedDate":"2017-01-18T14:57:13","indexId":"70011813","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"An automatic optimum kernel-size selection technique for edge enhancement","docAbstract":"

Edge enhancement is a technique that can be considered, to a first order, a correction for the modulation transfer function of an imaging system. Digital imaging systems sample a continuous function at discrete intervals so that high-frequency information cannot be recorded at the same precision as lower frequency data. Because of this, fine detail or edge information in digital images is lost. Spatial filtering techniques can be used to enhance the fine detail information that does exist in the digital image, but the filter size is dependent on the type of area being processed. A technique has been developed by the authors that uses the horizontal first difference to automatically select the optimum kernel-size that should be used to enhance the edges that are contained in the image. 

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing of Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0034-4257(82)90005-0","issn":"00344257","usgsCitation":"Chavez, P.S., and Bauer, B.P., 1982, An automatic optimum kernel-size selection technique for edge enhancement: Remote Sensing of Environment, v. 12, no. 1, p. 23-38, https://doi.org/10.1016/0034-4257(82)90005-0.","productDescription":"16 p.","startPage":"23","endPage":"38","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":221198,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea21e4b0c8380cd48665","contributors":{"authors":[{"text":"Chavez, Pat S. Jr.","contributorId":39870,"corporation":false,"usgs":true,"family":"Chavez","given":"Pat","suffix":"Jr.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":362015,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bauer, Brian P.","contributorId":58946,"corporation":false,"usgs":true,"family":"Bauer","given":"Brian","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":362016,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011657,"text":"70011657 - 1982 - A Proposed Model for the International Geomagnetic Reference Field-1965","interactions":[],"lastModifiedDate":"2024-04-25T11:07:29.291922","indexId":"70011657","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2310,"text":"Journal of Geomagnetism & Geoelectricity","active":true,"publicationSubtype":{"id":10}},"title":"A Proposed Model for the International Geomagnetic Reference Field-1965","docAbstract":"

A best current model of the main geomagnetic field is presented as a response to a need for an “International Geomagnetic Reference Field”. This model is described by a series of 120 spherical harmonic coefficients and their first and second time derivatives from an epoch 1960.0. It was derived from a sample of all magnetic survey data available from the interval 1900-1964 plus a recent global distribution of preliminary total field observations from the OGO-2 (1965-81A) spacecraft for epoch 1965.8. A duplicate data selection was made and the resulting field model compared with the first to help evaluate the minimum error. It was noted that the root —mean—square difference between the two models was about 30γ in the force components, 0.04 degrees in dip and 0.3 degrees in declination at the earth's surface for 1965.0.


","language":"English","publisher":"J-STAGE","doi":"10.5636/jgg.19.335","usgsCitation":"Peddie, N., and Fabiano, E., 1982, A Proposed Model for the International Geomagnetic Reference Field-1965: Journal of Geomagnetism & Geoelectricity, v. 34, no. 6, p. 357-364, https://doi.org/10.5636/jgg.19.335.","productDescription":"8 p.","startPage":"357","endPage":"364","numberOfPages":"8","costCenters":[],"links":[{"id":480260,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5636/jgg.19.335","text":"Publisher Index Page"},{"id":221537,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e514e4b0c8380cd46af3","contributors":{"authors":[{"text":"Peddie, N.W.","contributorId":75911,"corporation":false,"usgs":true,"family":"Peddie","given":"N.W.","affiliations":[],"preferred":false,"id":361631,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fabiano, E.B.","contributorId":32251,"corporation":false,"usgs":true,"family":"Fabiano","given":"E.B.","email":"","affiliations":[],"preferred":false,"id":361630,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011816,"text":"70011816 - 1982 - Sources, sinks and storage of river sediments in the Atlantic drainage of the United States","interactions":[],"lastModifiedDate":"2024-04-26T16:45:34.641676","indexId":"70011816","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2309,"text":"Journal of Geology","active":true,"publicationSubtype":{"id":10}},"title":"Sources, sinks and storage of river sediments in the Atlantic drainage of the United States","docAbstract":"

The history of sediment and its movement in the Atlantic drainage demonstrate some of the difficulties of modeling sediment on a river-basin scale. Soil erosion was accelerated by a factor of at least 10 when European settlers cleared forests and planted crops. Although increasing soil-conservation practice and decreasing crop farming have since reduced the rates of erosion, large quantities of eroded material are still stored on hillslopes and in stream valleys where they continue to augment the sediment loads of the rivers. The sediment from this episode of erosion that is largely past can be expected to emerge from storage for many decades and perhaps even several centuries to come. The reservoirs that have been built on many of the major rivers trap significant portions of the moving sediment which, in some places, may be remobilized by large floods. Essentially all the river sediment that reaches the Atlantic coastal zone is trapped in estuaries and coastal marshlands. Probably less than 5% is deposited on the floor of the continental shelf or the deep sea.

","language":"English","publisher":"University of Chicago Press","doi":"10.1086/628677","issn":"00221376","usgsCitation":"Meade, R., 1982, Sources, sinks and storage of river sediments in the Atlantic drainage of the United States: Journal of Geology, v. 90, no. 3, p. 235-252, https://doi.org/10.1086/628677.","productDescription":"18 p.","startPage":"235","endPage":"252","numberOfPages":"18","costCenters":[],"links":[{"id":221201,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b93a9e4b08c986b31a604","contributors":{"authors":[{"text":"Meade, R.H.","contributorId":27449,"corporation":false,"usgs":true,"family":"Meade","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":362021,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011482,"text":"70011482 - 1982 - Extension in the Rio Grande rift","interactions":[],"lastModifiedDate":"2024-07-16T15:09:07.736725","indexId":"70011482","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Extension in the Rio Grande rift","docAbstract":"

A positive gravity anomaly along the axis of the Rio Grande rift reflects a volume of anomalous mass added at the base of the crust and intruded into the crust. Part of this volume can be associated with vertical uplift of the crust. The remainder of this anomalous volume, plus the volume of surficial graben fill, can be associated with horizontal crustal extension. The volume of crustal uplift in the Rio Grande rift is unknown, but this term can be eliminated by means of an independent equation provided by assumption of generalized isostatic equilibrium. The volume and mass equations combined provide a solution for extension of the crust in terms of the following parameters: total anomalous mass deficiency in the mantle lithosphere, total anomalous mass excess in the crust and its density contrast, total anomalous mass deficiency of surficial graben fill and its density contrast, and the volume of material eroded from the uplift. Using standard density estimates and masses determined by equivalent-source modeling of gravity profiles, I obtained 1-km extension at 37°N (Colorado-New Mexico border), 13-km extension at 35°N (Albuquerque, New Mexico), and 24-km extension at 33°N in southern New Mexico. These estimates are of necessity very poorly constrained and may be as much as ±60% in error. Taking results at face value, the best fitting Euler pole occurs at about 41°N, in north central Colorado. The calculated opening angle is 1.32°. For an approximately 30-m.y. duration of the extensional system (late Oligocene to the present), calculated average angular velocity is 7.8×10−4 rad/m.y.; calculated average spreading half-rate at 33°N (for example) is a stately 0.04 cm/yr. The ratio of extension to uplift increases southward.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB10p08561","issn":"01480227","usgsCitation":"Cordell, L., 1982, Extension in the Rio Grande rift: Journal of Geophysical Research Solid Earth, v. 87, no. B10, p. 8561-8569, https://doi.org/10.1029/JB087iB10p08561.","productDescription":"9 p.","startPage":"8561","endPage":"8569","numberOfPages":"9","costCenters":[],"links":[{"id":220841,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B10","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a0e42e4b0c8380cd5338a","contributors":{"authors":[{"text":"Cordell, L.","contributorId":84901,"corporation":false,"usgs":true,"family":"Cordell","given":"L.","affiliations":[],"preferred":false,"id":361217,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011481,"text":"70011481 - 1982 - Permafrost, heat flow, and the geothermal regime at Prudhoe Bay, Alaska","interactions":[],"lastModifiedDate":"2024-07-16T15:11:03.279817","indexId":"70011481","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Permafrost, heat flow, and the geothermal regime at Prudhoe Bay, Alaska","docAbstract":"

Temperature measurements through permafrost in the oil field at Prudhoe Bay, Alaska, combined with laboratory measurements of the thermal conductivity of drill cuttings permit an evaluation of in situ thermal properties and an understanding of the general factors that control the geothermal regime. A sharp contrast in temperature gradient at ∼600 m represents a contrast in thermal conductivity caused by the downward change from interstitial ice to interstitial water at the base of permafrost under near steady state conditions. Interpretation of the gradient contrast in terms of a simple model for the conductivity of an aggregate yields the mean ice content (∼39%), and thermal conductivities for the frozen and thawed sections (8.1 and 4.7 mcal/cm s °C, respectively). These results yield a heat flow of ∼1.3 HFU, which is similar to other values on the Alaskan Arctic Coast; the anomalously deep permafrost is a result of the anomalously high conductivity of the siliceous ice-rich sediments. Curvature in the upper 160 m of the temperature profiles represents a warming of ∼1.8°C of the mean surface temperature and a net accumulation of 5–6 kcal/cm2 by the solid earth surface during the last 100 years or so. Rising sea level and thawing of ice-rich sea cliffs probably caused the shoreline to retreat tens of kilometers in the last 20,000 years, inundating a portion of the continental shelf that is presently the target of intensive oil exploration. A simple conduction model suggests that this recently inundated region is underlain by near-melting ice-rich permafrost to depths of 300–500 m; its presence is important to seismic interpretations in oil exploration and to engineering considerations in oil production. With confirmation of the permafrost configuration by offshore drilling, heat conduction models can yield reliable new information on the chronology of arctic shorelines.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB11p09301","issn":"01480227","usgsCitation":"Lachenbruch, A., Sass, J., Marshall, B., and Moses, T.H., 1982, Permafrost, heat flow, and the geothermal regime at Prudhoe Bay, Alaska: Journal of Geophysical Research Solid Earth, v. 87, no. B11, p. 9301-9316, https://doi.org/10.1029/JB087iB11p09301.","productDescription":"16 p.","startPage":"9301","endPage":"9316","numberOfPages":"16","costCenters":[],"links":[{"id":220840,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a76a3e4b0c8380cd78223","contributors":{"authors":[{"text":"Lachenbruch, A.H.","contributorId":76737,"corporation":false,"usgs":true,"family":"Lachenbruch","given":"A.H.","affiliations":[],"preferred":false,"id":361216,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sass, J.H.","contributorId":70749,"corporation":false,"usgs":true,"family":"Sass","given":"J.H.","email":"","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":361214,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marshall, B.V.","contributorId":72375,"corporation":false,"usgs":true,"family":"Marshall","given":"B.V.","affiliations":[],"preferred":false,"id":361215,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moses, T. H. Jr.","contributorId":70385,"corporation":false,"usgs":true,"family":"Moses","given":"T.","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":361213,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011464,"text":"70011464 - 1982 - The modified polyconic projection for the IMW","interactions":[],"lastModifiedDate":"2023-09-01T16:48:19.139483","indexId":"70011464","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1189,"text":"Cartographica: The International Journal for Geographic Information and Geovisualization","active":true,"publicationSubtype":{"id":10}},"title":"The modified polyconic projection for the IMW","docAbstract":"

The modified Polyconic map projection designed by Lallemand and adopted for the International Map of the World between 1909 and 1962 has two meridians and two parallels which are true to scale. Constructed geometrically in the past, forward and inverse coordinate transformations may be calculated analytically in order to transfer data from existing quadrangles to other maps. The equations for these transformations are derived and used to calculate representative tables of coordinates andscale factors. Although the projection is neither equal-area nor conformai, scale does not vary more than 0.06% throughout the quadrangle.

","language":"English","publisher":"University of Toronto Press","doi":"10.3138/557H-7263-01X6-072L","usgsCitation":"Snyder, J., 1982, The modified polyconic projection for the IMW: Cartographica: The International Journal for Geographic Information and Geovisualization, v. 19, no. 3-4, p. 31-43, https://doi.org/10.3138/557H-7263-01X6-072L.","productDescription":"13 p.","startPage":"31","endPage":"43","numberOfPages":"13","costCenters":[],"links":[{"id":221669,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bade1e4b08c986b323e41","contributors":{"authors":[{"text":"Snyder, John P.","contributorId":16878,"corporation":false,"usgs":true,"family":"Snyder","given":"John P.","affiliations":[],"preferred":false,"id":361177,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1007619,"text":"1007619 - 1982 - A population model of the lizard Uta stansburiana, in southern Nevada","interactions":[],"lastModifiedDate":"2023-10-11T16:52:50.380295","indexId":"1007619","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1459,"text":"Ecological Monographs","active":true,"publicationSubtype":{"id":10}},"title":"A population model of the lizard Uta stansburiana, in southern Nevada","docAbstract":"

Population densities, reproduction, and survival of the lizard Uta stansburiana were measured at the Nevada Test Site in southern Nevada, USA, between 1964 and 1974. These data were used to develop a model of the population dynamics of this species. Results of irrigation experiments in 0.4—ha enclosures near Mercury, Nevada, were used to formulate multiple—regression equations predicting frequency and size of clutches laid by two age—classes of females in terms of winter rainfall, March air temperatures, and Uta population density. Densities of Uta in these enclosures were manipulated, and age—specific survival modeled in terms of spring densities of Uta. Experiments in which an important predator on Uta (the leopard lizard, Crotaphytus wislizeni) was removed from enclosures were used to estimate the influence of the predator on basic survival rates of hatchling and older Uta. The model was generally developed from data acquired in the small enclosures, but predictions were compared with actual observations of changes in Uta populations in Rock Valley (19 km west of Mercury, Nevada) between 1966 and 1972. Agreement between model predictions and actual numbers was fair. The model predicted a decrease in density from 1966 to 1967, but numbers of Uta actually increased conspicuously at this time. This was the only major discrepancy between predictions and observations. The observed mean spring density (d) between 1967 and 1972 was 41.4 Uta/ha (Sd = 20.8), while the model predicted a mean density of 37.8 Uta/ha (SD = 13.6). Observed and predicted mean proportions of yearlings in spring populations were identical (0.78). The basic version of the model estimated different survival rates for two age—groups of adult Uta. A simpler version of the model, using a common survival rate for both age—groups, gave predictions essentially identical with those of the basic model. Other tests of the basic model showed it to be most sensitive to changes in winter rainfall and predation pressure, much less so to air temperatures. Fifteen— and 30—yr synthetic sequences of predator densities were used to examine model stability over longer periods of time. When predator densities were drawn randomly from distributions with a mean of 2 individuals/ha, model populations exhibited lower mean numbers and amplitudes than actually observed during 9 yr in Rock Valley. The basic model included three density—dependent parameters: clutch frequency, clutch size, and adult survival. The model was modified so that (1) egg production was density independent, while adult survival was not; (2) adult survival was density independent, but egg production was not; and (3) there was no density dependence in the model. Thirty—year tests showed that cases 1 and 2 did not differ markedly from the basic model, although the removal of one density—dependent constraint resulted in slightly higher mean densities. In case 3, the model lacked stability and predicted numbers increased to unrealistic levels within 5 yr. We conclude that processes relating to egg production were modeled more effectively than those influencing survival, and that improvement of the model will depend on more detailed studies of the impact of predation on age—specific survival rates of Uta.

","language":"English","publisher":"Ecological Society of America","doi":"10.2307/2937330","usgsCitation":"Turner, F.B., Medica, P.A., Bridges, K.W., and Jennrich, R.I., 1982, A population model of the lizard Uta stansburiana, in southern Nevada: Ecological Monographs, v. 52, no. 3, p. 243-259, https://doi.org/10.2307/2937330.","productDescription":"17 p.","startPage":"243","endPage":"259","numberOfPages":"17","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":130031,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Nevada Test Site","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.10256765496331,\n 37.90030797036627\n ],\n [\n -117.10256765496331,\n 36.536675355543494\n ],\n [\n -115.19763756878459,\n 36.536675355543494\n ],\n [\n -115.19763756878459,\n 37.90030797036627\n ],\n [\n -117.10256765496331,\n 37.90030797036627\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"52","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1fe4b07f02db6ab752","contributors":{"authors":[{"text":"Turner, Frederick B.","contributorId":44086,"corporation":false,"usgs":true,"family":"Turner","given":"Frederick","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":315734,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Medica, Phil A. 0000-0002-5901-8841 pmedica@usgs.gov","orcid":"https://orcid.org/0000-0002-5901-8841","contributorId":3226,"corporation":false,"usgs":true,"family":"Medica","given":"Phil","email":"pmedica@usgs.gov","middleInitial":"A.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":315732,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bridges, K. W.","contributorId":38933,"corporation":false,"usgs":false,"family":"Bridges","given":"K.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":315731,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jennrich, R. I.","contributorId":77476,"corporation":false,"usgs":true,"family":"Jennrich","given":"R.","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":315733,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011633,"text":"70011633 - 1982 - Modern shallow-water graded sand layers from storm surges, Bering Shelf: a mimic of Bouma sequences and turbidite systems","interactions":[],"lastModifiedDate":"2024-05-21T23:50:16.941879","indexId":"70011633","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2450,"text":"Journal of Sedimentary Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Modern shallow-water graded sand layers from storm surges, Bering Shelf: a mimic of Bouma sequences and turbidite systems","docAbstract":"

A sequence of graded sand layers, interbedded with mud, extends offshore over 100 km from the Yukon Delta shoreline across the flat, shallow (<20 m depth) epicontinental shelf of the northern Bering Sea, Alaska. Proximal graded sand beds on the delta-front platform near the shoreline are coarser (2-3phi ), thicker (10 to 20 cm), and contain more complete vertical sequences of sedimentary structures than distal beds. The inshore graded vertical sequence of structures from the base to the top of individual sand layers includes plane-parallel lamination (S b ), cross lamination (S c ), plane-parallel lamination (S d ), and mud (S e ) analogous to the Bouma T (sub a-e) turbidite sequence. Structures vary between interchannel platform deposits with complete S b -S e sequences and channel-floor sands that are all trough cross-laminated. Distally, storm-sand layers change to thin (1 to 5 cm) silt beds that contain flat and ripple-drift lamination (S (sub c-e,de) ), are commonly bioturbated, and are associated with shell and pebble lags from storm-wave reworking. The sequence of graded sands appears to be related to the major storm surges that occur every several years. The major storms increase the average 10-m water depth in southern Norton Sound as much as 5 m and cause fluctuations in pore pressure from wave cyclic loading that may liquefy the upper 2 to 3 m of sediment. Storm-associated bottom currents, possibly dominated by rapidly waning ebb flow, transport the liquefied inshore sand far offshore (> 100 kin). Such shallow-water graded layers off lobate deltas may be distinguished from similar deep-water turbidites by: 1) the predominance of trough cross-lamination, perhaps resulting from wave oscillation effects, in the proximal part of the system, and 2) gradation to common shallow marine fossils, bioturbation, and storm lag layers in distal areas.

","language":"English","publisher":"SEPM","doi":"10.1306/212F7F9A-2B24-11D7-8648000102C1865D","issn":"00224472","usgsCitation":"Nelson, C., 1982, Modern shallow-water graded sand layers from storm surges, Bering Shelf: a mimic of Bouma sequences and turbidite systems: Journal of Sedimentary Petrology, v. 52, no. 2, p. 537-545, https://doi.org/10.1306/212F7F9A-2B24-11D7-8648000102C1865D.","productDescription":"9 p.","startPage":"537","endPage":"545","numberOfPages":"9","costCenters":[],"links":[{"id":221188,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5ca1e4b0c8380cd6fe37","contributors":{"authors":[{"text":"Nelson, C.H.","contributorId":88346,"corporation":false,"usgs":true,"family":"Nelson","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":361582,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011536,"text":"70011536 - 1982 - Application of automated image analysis to coal petrography","interactions":[],"lastModifiedDate":"2024-02-24T01:39:00.168408","indexId":"70011536","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Application of automated image analysis to coal petrography","docAbstract":"

The coal petrologist seeks to determine the petrographic characteristics of organic and inorganic coal constituents and their lateral and vertical variations within a single coal bed or different coal beds of a particular coal field. Definitive descriptions of coal characteristics and coal facies provide the basis for interpretation of depositional environments, diagenetic changes, and burial history and determination of the degree of coalification or metamorphism. Numerous coal core or columnar samples must be studied in detail in order to adequately describe and define coal microlithotypes, lithotypes, and lithologic facies and their variations. The large amount of petrographic information required can be obtained rapidly and quantitatively by use of an automated image-analysis system (AIAS).

An AIAS can be used to generate quantitative megascopic and microscopic modal analyses for the lithologic units of an entire columnar section of a coal bed. In our scheme for megascopic analysis, distinctive bands 2 mm or more thick are first demarcated by visual inspection. These bands consist of either nearly pure microlithotypes or lithotypes such as vitrite/vitrain or fusite/fusain, or assemblages of microlithotypes. Megascopic analysis with the aid of the AIAS is next performed to determine volume percentages of vitrite, inertite, minerals, and microlithotype mixtures in bands 0.5 to 2 mm thick. The microlithotype mixtures are analyzed microscopically by use of the AIAS to determine their modal composition in terms of maceral and optically observable mineral components. Megascopic and microscopic data are combined to describe the coal unit quantitatively in terms of (V) for vitrite, (E) for liptite, (I) for inertite or fusite, (M) for mineral components other than iron sulfide, (S) for iron sulfide, and (VEIM) for the composition of the mixed phases (Xi) i = 1,2, etc. in terms of the maceral groups vitrinite V, exinite E, inertinite I, and optically observable mineral content M. The volume percentage of each component present is indicated by a subscript. For example, a lithologic unit was determined megascopically to have the composition (V)13(I)1(S)1(X1)83(X2)2. After microscopic analysis of the mixed phases, this composition was expressed as (V)13(I)1(S)1(V63E19I14M4)83(V67E11I13M9)2. Finally, these data were combined in a description of the bulk composition as V67E16I13M3S1. An AIAS can also analyze textural characteristics and can be used for quick and reliable determination of rank (reflectance).

Our AIAS is completely software based and incorporates a television (TV) camera that has optimum response characteristics in the range of reflectance less than 5%, making it particularly suitable for coal studies. Analysis of the digitized signal from the TV camera is controlled by a microprocessor having a resolution of 64 gray levels between full illumination and dark current. The processed image is reconverted for display on a TV monitor screen, on which selection of phases or features to be analyzed is readily controlled and edited by the operator through use of a lightpen.

We expect that automated image analysis, because it can rapidly provide a large amount of pertinent information, will play a major role in the advancement of coal petrography.

","language":"English","publisher":"Elsevier","doi":"10.1016/0166-5162(82)90002-7","issn":"01665162","usgsCitation":"Chao, E.C., Minkin, J., and Thompson, C., 1982, Application of automated image analysis to coal petrography: International Journal of Coal Geology, v. 2, no. 2, p. 113-150, https://doi.org/10.1016/0166-5162(82)90002-7.","productDescription":"38 p.","startPage":"113","endPage":"150","numberOfPages":"38","costCenters":[],"links":[{"id":220777,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec96e4b0c8380cd49376","contributors":{"authors":[{"text":"Chao, E. C. T.","contributorId":96713,"corporation":false,"usgs":true,"family":"Chao","given":"E.","email":"","middleInitial":"C. T.","affiliations":[],"preferred":false,"id":361350,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Minkin, J.A.","contributorId":38588,"corporation":false,"usgs":true,"family":"Minkin","given":"J.A.","affiliations":[],"preferred":false,"id":361349,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, C.L.","contributorId":12189,"corporation":false,"usgs":true,"family":"Thompson","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":361348,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011653,"text":"70011653 - 1982 - Photogrammetry of the Viking-Lander imagery.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:31","indexId":"70011653","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Photogrammetry of the Viking-Lander imagery.","docAbstract":"We have solved the problem of photogrammetric mapping from the Viking Lander photography in two ways: 1) by converting the azimuth and elevation scanning imagery to the equivalent of a frame picture by means of computerized rectification; and 2) by interfacing a high-speed, general-purpose computer to the AS-11A analytical plotter so that all computations of corrections can be performed in real time during the process of model orientation and map compilation. Examples are presented of photographs and maps of Earth and Mars. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00991112","usgsCitation":"Wu, S., and Schafer, F., 1982, Photogrammetry of the Viking-Lander imagery.: Photogrammetric Engineering and Remote Sensing, v. 48, no. 5, p. 803-816.","startPage":"803","endPage":"816","numberOfPages":"14","costCenters":[],"links":[{"id":221457,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7a1ee4b0c8380cd78d3d","contributors":{"authors":[{"text":"Wu, S.S.C.","contributorId":10421,"corporation":false,"usgs":true,"family":"Wu","given":"S.S.C.","email":"","affiliations":[],"preferred":false,"id":361624,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schafer, F.J.","contributorId":76465,"corporation":false,"usgs":true,"family":"Schafer","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":361625,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70186707,"text":"70186707 - 1982 - Deep structure and evolution of the Carolina Trough","interactions":[],"lastModifiedDate":"2018-03-05T15:15:43","indexId":"70186707","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Deep structure and evolution of the Carolina Trough","docAbstract":"

Multichannel seismic-reflection data together with two-dimensional gravity and magnetic models suggest that the crustal structure off North Carolina consists of normal continental crust landward of the Brunswick magnetic anomaly (BMA), rift-stage crust in the 80-km-wide zone between the BMA and the East Coast magnetic anomaly (ECMA), and normal oceanic crust seaward of the ECMA.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Studies in continental margin geology","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"American Association of Petroleum Geologists","usgsCitation":"Hutchinson, D.R., Grow, J.A., Klitgord, K.D., and Swift, B., 1982, Deep structure and evolution of the Carolina Trough, chap. of Studies in continental margin geology, p. 129-152.","productDescription":"24 p. ","startPage":"129","endPage":"152","costCenters":[],"links":[{"id":339424,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":339423,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://archives.datapages.com/data/specpubs/history2/data/a110/a110/0001/0100/0129.htm"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58e8a556e4b09da6799d642e","contributors":{"authors":[{"text":"Hutchinson, D. R.","contributorId":31770,"corporation":false,"usgs":true,"family":"Hutchinson","given":"D.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":690322,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grow, J. A.","contributorId":27858,"corporation":false,"usgs":true,"family":"Grow","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":690323,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klitgord, Kim D.","contributorId":82307,"corporation":false,"usgs":true,"family":"Klitgord","given":"Kim","email":"","middleInitial":"D.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":690324,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swift, B.A.","contributorId":32937,"corporation":false,"usgs":true,"family":"Swift","given":"B.A.","affiliations":[],"preferred":false,"id":690325,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70195658,"text":"70195658 - 1982 - Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis","interactions":[{"subject":{"id":70195658,"text":"70195658 - 1982 - Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis","indexId":"70195658","publicationYear":"1982","noYear":false,"title":" Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis"},"predicate":"IS_PART_OF","object":{"id":70190672,"text":"70190672 - 1982 - The dynamic environment of the ocean floor","indexId":"70190672","publicationYear":"1982","noYear":false,"title":"The dynamic environment of the ocean floor"},"id":1}],"isPartOf":{"id":70190672,"text":"70190672 - 1982 - The dynamic environment of the ocean floor","indexId":"70190672","publicationYear":"1982","noYear":false,"title":"The dynamic environment of the ocean floor"},"lastModifiedDate":"2018-02-26T11:54:39","indexId":"70195658","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":" Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis","docAbstract":"

No abstract available.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The dynamic environment of the ocean floor","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Lexington Books","isbn":"9780669028096","usgsCitation":"Patterson, P., and Lowell, R., 1982, Numerical models of hydrothermal circulation for the intrusion zone at an ocean ridge axis, chap. of The dynamic environment of the ocean floor, p. 471-492.","productDescription":"22 p.","startPage":"471","endPage":"492","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":352008,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff4242e4b0da30c1bfdad5","contributors":{"editors":[{"text":"Fanning, Kent A.","contributorId":138529,"corporation":false,"usgs":false,"family":"Fanning","given":"Kent","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":729588,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Manheim, Frank T.","contributorId":26991,"corporation":false,"usgs":true,"family":"Manheim","given":"Frank","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":729589,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Patterson, P.L.","contributorId":71656,"corporation":false,"usgs":false,"family":"Patterson","given":"P.L.","email":"","affiliations":[],"preferred":false,"id":729586,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lowell, R.P.","contributorId":167006,"corporation":false,"usgs":false,"family":"Lowell","given":"R.P.","email":"","affiliations":[{"id":12694,"text":"Virginia Tech","active":true,"usgs":false}],"preferred":false,"id":729587,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011669,"text":"70011669 - 1982 - Contemporary block tectonics: California and Nevada","interactions":[],"lastModifiedDate":"2024-07-16T14:58:19.264656","indexId":"70011669","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Contemporary block tectonics: California and Nevada","docAbstract":"

Well-determined fault plane solution and the gross pattern of late-Cenozoic faulting in California and Nevada show a systematic relation between the orientation of fault planes and slip directions. In general, normal faults have northerly strikes, reverse faults have easterly strikes, and dextral and sinstral strike slip faults have northwesterly and northeasterly strikes, respectively. Kinematically, this relation is consistent with the response of clusters of fault-bounded crustal blocks to a regional stress field generated by the relative motion between the Pacific and North American plates. In this stress field, the greatest and least principal (compressive) stresses are restricted to northerly and easterly striking vertical planes, respectively. Clusters of crustal blocks bound by faults having the above attitudes form three basic regimes: (1) a spreading regime with a combination of normal and conjugate, strike slip faults, (2) a converging regime with a combination of reverse and conjugate, strike slip faults, and (3) a wrench regime with sets of subparallel, throughgoing, northwest striking (dextral) faults or northeast striking (sinstral) faults. These three regimes are typified by faulting patterns in the Basin and Range province (spreading), the Transverse Ranges (converging), and the San Andreas-Garlock fault systems (wrench), respectively. The gross deformation of each regime resulting from relative displacements between individual blocks is characterized by north-south shortening and east-west extension with the ratio of extensional to shortening strains (and the areal dilitation) decreasing systematically from spreading to wrench to compressional regimes. The wrench regime involves a component of net rotational deformation (clockwise for dextral slip and counter-clockwise for sinstral slip), while deformation of the spreading and converging regimes is irrotational. Local deviations from regional kinematic directions are concentrated along the boundaries between regimes reflecting the mismatch in gross deformation fields between regimes. Maximum principal and shear stress magnitudes will increase systematically from spreading to wrench to converging regimes provided that fault slip is controlled by frictional strength (Byerlee's law) along preexisting fractures and that pore pressure in the brittle crust is laterally uniform. A minimum strength difference between active, block-bounding faults and block interiors is 15–30%. Simple arrangements of such block clusters mimic the gross kinematic pattern of Quaternary faulting in California and Nevada. Some implications for contemporary tectonics emphasized by this model involve the westward displacement of the Sierra Nevada block.with respect to the stable interior of the North American plates, oblique thrusting of the Salinian block over the Pacific plate, and a progressive increase in the offset of the San Andreas fault represented by the ‘big bend’ through the Transverse Ranges.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB07p05433","issn":"01480227","usgsCitation":"Hill, D., 1982, Contemporary block tectonics: California and Nevada: Journal of Geophysical Research Solid Earth, v. 87, no. B7, p. 5433-5450, https://doi.org/10.1029/JB087iB07p05433.","productDescription":"18 p.","startPage":"5433","endPage":"5450","numberOfPages":"18","costCenters":[],"links":[{"id":221768,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B7","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059fa4be4b0c8380cd4da18","contributors":{"authors":[{"text":"Hill, D.P.","contributorId":27432,"corporation":false,"usgs":true,"family":"Hill","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":361669,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70142603,"text":"70142603 - 1982 - Implications of the Precambrian lineaments on the Red Sea tectonics based on Landsat study of northeast Sudan","interactions":[],"lastModifiedDate":"2023-11-29T16:34:32.716763","indexId":"70142603","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1843,"text":"Global Tectonics and Metallogeny","active":true,"publicationSubtype":{"id":10}},"title":"Implications of the Precambrian lineaments on the Red Sea tectonics based on Landsat study of northeast Sudan","docAbstract":"

Lineament analysis of a Landsat Imagery mosaic (scale 1:1,000,000) of northeast Sugdan indicate significant curvilinear as well as rectilinear fracture patterns of possible Precambrian age.  Rectilinear features trend dominantly in N-S (± 10°), NNW and ENE, and less commonly in NW and EW directions.  The Precambrian fractures closely match, and have possibly accommodated the Tertiary structures of the Red Sea rift.

\n

Projection of the ENE continental fractures offshore on the basis of a modified trend due to rift movements, and \"principle of equidistances,\" corresponds with apparently more precise locations of possible transverse faults.  Projections of the proposed transverse faults generally conform with breaks in bathymetric contours, and azimuth trend of the axial trough.  Hot brine pools, shallow focus epicenters and anomalous heat flow measurements, all tend to lie at or close to the intersection of the transverse faults and axis of the deep waters.  The transverse faults exhibit a general N35-50°E trend as compared with the N60-70_Etrend of the ancestor continental fractures. Deflection in trend caused by faults coinciding with the presnet shore line, may indicate lateral displacement prior to the initial hase of rifting in Miocene times.  It also supports the hypothesis of a \"two-phase rifting\" of the Red Sea.  Spreading movements proposed along transverse faults with trend values exceeding N50°E may not be applicable, at least for the more recent separation movements.

","language":"English","publisher":"Schweizerbart Science Publishers","doi":"10.1127/gtm/1/1982/326","usgsCitation":"Ahmed, F., 1982, Implications of the Precambrian lineaments on the Red Sea tectonics based on Landsat study of northeast Sudan: Global Tectonics and Metallogeny, v. 1, no. 4, p. 326-335, https://doi.org/10.1127/gtm/1/1982/326.","productDescription":"10 p.","startPage":"326","endPage":"335","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":298357,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Sudan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 22.0166015625,\n 9.44906182688142\n ],\n [\n 22.0166015625,\n 21.90227796666864\n ],\n [\n 37.9248046875,\n 21.90227796666864\n ],\n [\n 37.9248046875,\n 9.44906182688142\n ],\n [\n 22.0166015625,\n 9.44906182688142\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54fec432e4b02419550debc2","contributors":{"authors":[{"text":"Ahmed, F.","contributorId":139599,"corporation":false,"usgs":false,"family":"Ahmed","given":"F.","email":"","affiliations":[],"preferred":false,"id":541997,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":27713,"text":"wri8253 - 1982 - Ground-water temperature of the with application to ground-water-source heat pumps","interactions":[],"lastModifiedDate":"2023-07-14T15:22:08.941467","indexId":"wri8253","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"82-53","title":"Ground-water temperature of the with application to ground-water-source heat pumps","docAbstract":"Ground-water temperature was measured during a one-year period (1980-81) in 20 wells in the Wyoming Quadrangle in central Delaware. Data from thermistors set at fixed depths in two wells were collected twice each week, and vertical temperature profiles of the remaining 18 wells were made monthly. Ground-water temperature at 8 feet below land surface in well Jc55-1 ranged from 45.0 degrees F in February to 70.1 degrees F in September. Temperature at 35 feet below land surface in the same well reached a minimum of 56.0 degrees F in August, and a maximum of 57.8 degrees F in February. Average annual temperature of ground water at 25 feet below land surface in all wells ranged from 54.6 degrees F to 57.8 degrees F. Variations of average temperature probably reflect the presence or absence of forestation in the recharge areas of the wells. Ground-water-source heat pumps supplied with water from wells 30 or more feet below land surface will operate more efficiently in both heating and cooling modes than those supplied with water from shallower depths. (USGS)","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri8253","usgsCitation":"Hodges, A.L., 1982, Ground-water temperature of the with application to ground-water-source heat pumps: U.S. Geological Survey Water-Resources Investigations Report 82-53, vi, 29 p., https://doi.org/10.3133/wri8253.","productDescription":"vi, 29 p.","costCenters":[],"links":[{"id":366225,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1982/0053/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":158501,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1982/0053/report-thumb.jpg"}],"country":"United States","state":"Delaware","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.7562255859375,\n 38.839707613545144\n ],\n [\n -75.2288818359375,\n 38.839707613545144\n ],\n [\n -75.2288818359375,\n 39.2407625100131\n ],\n [\n -75.7562255859375,\n 39.2407625100131\n ],\n [\n -75.7562255859375,\n 38.839707613545144\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65a38e","contributors":{"authors":[{"text":"Hodges, Arthur L. Jr.","contributorId":62075,"corporation":false,"usgs":true,"family":"Hodges","given":"Arthur","suffix":"Jr.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":198576,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":85369,"text":"85369 - 1982 - Population modeling for furbearer management","interactions":[],"lastModifiedDate":"2012-02-02T00:04:01","indexId":"85369","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Population modeling for furbearer management","docAbstract":"The management of furbearers has become increasingly complex as greater demands are placed on their populations. Correspondingly, needs for information to use in management have increased. Inadequate information leads the manager to err on the conservative side; unless the size of the 'harvestable surplus' is known, the population cannot be fully exploited. Conversely, information beyond what is needed becomes an unaffordable luxury. Population modeling has proven useful for organizing information on numerous game animals. Modeling serves to determine if information of the right kind and proper amount is being gathered; systematizes data collection, data interpretation, and decision making; and permits more effective management and better utilization of game populations. This report briefly reviews the principles of population modeling, describes what has been learned from previous modeling efforts on furbearers, and outlines the potential role of population modeling in furbearer management.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Midwest Furbearer Management. N. Central Sec., Central Mountains and Plains Sec., and KS.","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"The Wildlife Society","publisherLocation":"Bethesda, MD","usgsCitation":"Johnson, D.H., 1982, Population modeling for furbearer management, chap. of Midwest Furbearer Management. N. Central Sec., Central Mountains and Plains Sec., and KS., p. 25-37.","productDescription":"p. 25-37","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":127973,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad6e4b07f02db683e8d","contributors":{"editors":[{"text":"Sanderson, G.C.","contributorId":65573,"corporation":false,"usgs":true,"family":"Sanderson","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":504440,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Johnson, Douglas H. 0000-0002-7778-6641","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":70327,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":295962,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}