{"pageNumber":"4545","pageRowStart":"113600","pageSize":"25","recordCount":165626,"records":[{"id":70013064,"text":"70013064 - 1985 - Lacustrine-humate model for primary uranium ore deposits, Grants uranium region, New Mexico","interactions":[],"lastModifiedDate":"2023-01-12T17:04:16.864261","indexId":"70013064","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Lacustrine-humate model for primary uranium ore deposits, Grants uranium region, New Mexico","docAbstract":"<p>Two generations of uranium ore, primary and redistributed, occur in fluvial sandstones of the Upper Jurassic Morrison Formation in the San Juan basin; the two stages of ore formation can be related to the hydrologic history of the basin. Primary ore formed soon after Morrison deposition, in the Late Jurassic to Early Cretaceous, and a model, the lacustrine-humate model, is offered that views primary mineralization as a diagenetic event related to early pore fluid evolution. The basic premise is that the humate, a pore-filling organic material closely associated with primary ore, originated as humic acids dissolved in pore waters of greenish-gray lacustrine mudstones deposited in the mud-flat facies of the Brushy Basin Member and similar \"K\" shale beds in the Westwater Can on Member. During compaction associated with early burial, formation water expelled from lacustrine mudstone units carried these humic acids into adjacent sandstone beds where the organics precipitated, forming the humate deposits that concentrated uranium.</p><p>During the Tertiary, much later in the hydrologic history of the basin, when Jurassic sediments were largely compacted, oxygenated ground water flowed basinward from uplifted basin margins. This invasion of Morrison sandstone beds by oxidizing ground waters redistributed uranium from primary ores along redox boundaries, forming ore deposits that resemble roll-front-type uranium ores.</p>","language":"English","publisher":"American Association of Petroleum Geologists (AAPG)","doi":"10.1306/94885589-1704-11D7-8645000102C1865D","usgsCitation":"Turner-Peterson, C., 1985, Lacustrine-humate model for primary uranium ore deposits, Grants uranium region, New Mexico: American Association of Petroleum Geologists Bulletin, v. 69, no. 11, p. 1990-2020, https://doi.org/10.1306/94885589-1704-11D7-8645000102C1865D.","productDescription":"31 p.","startPage":"1990","endPage":"2020","numberOfPages":"31","costCenters":[],"links":[{"id":220347,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Mexico","otherGeospatial":"Grants uranium region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -108.64038174995106,\n              36.04693775500846\n            ],\n            [\n              -108.64038174995106,\n              34.70563438153877\n            ],\n            [\n              -106.912022747075,\n              34.70563438153877\n            ],\n            [\n              -106.912022747075,\n              36.04693775500846\n            ],\n            [\n              -108.64038174995106,\n              36.04693775500846\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"69","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4130e4b0c8380cd6537f","contributors":{"authors":[{"text":"Turner-Peterson, C. E.","contributorId":53958,"corporation":false,"usgs":true,"family":"Turner-Peterson","given":"C. E.","affiliations":[],"preferred":false,"id":365203,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013065,"text":"70013065 - 1985 - Drainage development of the Green River Basin in southwestern Wyoming and its bearing on fish biogeography, neotectonics, and paleoclimates.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:38","indexId":"70013065","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2789,"text":"Mountain Geologist","active":true,"publicationSubtype":{"id":10}},"title":"Drainage development of the Green River Basin in southwestern Wyoming and its bearing on fish biogeography, neotectonics, and paleoclimates.","docAbstract":"The Upper Green River flows southward out of the Green River Basin through a series of deep canyons across the Uinta Mountains in a course that post-dates the deposition of the Bishop Conglomerate (Oligocene). After the Eocene lakes disappeared, drainage was generally eastward across the present Continental Divide, until the Green River was captured near Green River, Wyo. by south-flowing drainage in middle Pleistocene time, ca., 600 kyr ago. Capture of the Upper Green River as recently as middle Pleistocene time, if a valid hypothesis, must take into account the marked differences between the endemic and indigenous fish fauna of the Green River and that of the North Platte. -from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mountain Geologist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0027254X","usgsCitation":"Hansen, W.R., 1985, Drainage development of the Green River Basin in southwestern Wyoming and its bearing on fish biogeography, neotectonics, and paleoclimates.: Mountain Geologist, v. 22, no. 4, p. 192-204.","startPage":"192","endPage":"204","numberOfPages":"13","costCenters":[],"links":[{"id":220348,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a03cee4b0c8380cd50662","contributors":{"authors":[{"text":"Hansen, W. R.","contributorId":59378,"corporation":false,"usgs":true,"family":"Hansen","given":"W.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":365204,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013066,"text":"70013066 - 1985 - Absolute calibration of Landsat instruments using the moon.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:38","indexId":"70013066","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Absolute calibration of Landsat instruments using the moon.","docAbstract":"A lunar observation by Landsat could provide improved radiometric and geometric calibration of both the Thematic Mapper and the Multispectral Scanner in terms of absolute radiometry, determination of the modulation transfer function, and sensitivity to scattered light. A pitch of the spacecraft would be required. -Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Kieffer, H.H., and Wildey, R., 1985, Absolute calibration of Landsat instruments using the moon.: Photogrammetric Engineering and Remote Sensing, v. 51, no. 9, p. 1391-1393.","startPage":"1391","endPage":"1393","numberOfPages":"3","costCenters":[],"links":[{"id":220349,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e64ae4b0c8380cd47308","contributors":{"authors":[{"text":"Kieffer, H. H.","contributorId":40725,"corporation":false,"usgs":false,"family":"Kieffer","given":"H.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":365206,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wildey, R.L.","contributorId":9700,"corporation":false,"usgs":true,"family":"Wildey","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":365205,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013063,"text":"70013063 - 1985 - Saprolite formation beneath Coastal Plain sediments near Washington, D.C.","interactions":[],"lastModifiedDate":"2023-12-28T21:40:05.43964","indexId":"70013063","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Saprolite formation beneath Coastal Plain sediments near Washington, D.C.","docAbstract":"<p>Crystalline rocks buried beneath Atlantic Coastal Plain sediments in the Washington, D.C., area commonly have weathering profiles that resemble exposed saprolite of the Piedmont. Cuts along the Washington Metropolitan Area Transit Authority (WMATA) route in northern Virginia show a bedrock weathering profile beneath Cretaceous and younger sediments.</p><p>Three lines of evidence indicate that this buried weathering profile (saprolite) has formed in the subsurface and is post-Miocene in age:</p><ol class=\"number\"><li><p>The thickness of the profile, ranging from 2 to 15 m, is thinner beneath clays and thicker beneath sands, apparently a function of the permeability of the overlying material.</p></li><li><p>The buried profile shows no evidence of soil formation at its upper surface and, therefore, no evidence of ever having been sub-aerially exposed.</p></li><li><p>Consolidation tests on the cohesive clayey silts in the samples of the weathering profile indicate mechanical equilibrium with the present overburden, whereas consolidation tests on superjacent Cretaceous clays indicate over-consolidation resulting from a thicker pre-upper Miocene overburden.</p></li></ol><p><br></p><p>The post-Miocene age for the subsurface saprolite profile shows that not all saprolite beneath Cretaceous sediment is pre-Cretaceous in age. These observations have important implications for the interpretation of age of the exposed Piedmont saprolite.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1985)96<886:SFBCPS>2.0.CO;2","usgsCitation":"Pavich, M., and Obermeier, S., 1985, Saprolite formation beneath Coastal Plain sediments near Washington, D.C.: Geological Society of America Bulletin, v. 96, no. 7, p. 886-900, https://doi.org/10.1130/0016-7606(1985)96<886:SFBCPS>2.0.CO;2.","productDescription":"15 p.","startPage":"886","endPage":"900","numberOfPages":"15","costCenters":[],"links":[{"id":220346,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Washington, D.C.","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -77.81620998525524,\n              39.373216950063465\n            ],\n            [\n              -77.81620998525524,\n              38.4155630828767\n            ],\n            [\n              -76.37700100088063,\n              38.4155630828767\n            ],\n            [\n              -76.37700100088063,\n              39.373216950063465\n            ],\n            [\n              -77.81620998525524,\n              39.373216950063465\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"96","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b86bfe4b08c986b3160ee","contributors":{"authors":[{"text":"Pavich, M.J.","contributorId":70788,"corporation":false,"usgs":true,"family":"Pavich","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":365202,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Obermeier, S. F.","contributorId":17602,"corporation":false,"usgs":true,"family":"Obermeier","given":"S. F.","affiliations":[],"preferred":false,"id":365201,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":28497,"text":"wri844351 - 1985 - A preliminary evaluation of hydrology and water quality near the Tacoma landfill, Pierce County, Washington","interactions":[],"lastModifiedDate":"2023-04-06T18:37:41.574409","indexId":"wri844351","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"84-4351","title":"A preliminary evaluation of hydrology and water quality near the Tacoma landfill, Pierce County, Washington","docAbstract":"<p>The Tacoma landfill, located in western Pierce County, Washington, has been used for the disposal of waste since about 1960. Disposal operations are planned to continue at this site until at least 1990. Data were compiled and interpreted to help understand the possible effects of the landfill on water quality in the surrounding area. Data were collected from published and unpublished reports of the U.S. Geological Survey, and from predominantly unpublished data in the files of other government agencies. The Tacoma landfill is underlain by unconsolidated, glacially derived deposits that consist of a wide variety of mixtures of clay to boulder-sized materials. Ground water is mostly the result of rainfall on the land surface, and moves through artesian aquifers (under the landfill) that are tapped for both domestic and municipal use. Hazardous liquid and dissolved wastes are probably present in the landfill, and potential flow paths for waste migration exist. An undetermined number of single-family domestic wells and 18 public-supply wells are within 3 miles of the landfill, three as close as 0.2 miles. There is only limited evidence indicating ground- and surface-water contamination. Further investigations of the geology, hydrology and water quality are needed to characterize the impact the landfill has on ground- and surface-water of the surrounding area.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri844351","usgsCitation":"Lum, W., and Turney, G.L., 1985, A preliminary evaluation of hydrology and water quality near the Tacoma landfill, Pierce County, Washington: U.S. Geological Survey Water-Resources Investigations Report 84-4351, v, 35 p., https://doi.org/10.3133/wri844351.","productDescription":"v, 35 p.","costCenters":[],"links":[{"id":57299,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1984/4351/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":122670,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1984/4351/report-thumb.jpg"},{"id":415365,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36184.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Washington","city":"Tacoma","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -122.543,\n              47.239\n            ],\n            [\n              -122.543,\n              47.185\n            ],\n            [\n              -122.457,\n              47.185\n            ],\n            [\n              -122.457,\n              47.239\n            ],\n            [\n              -122.543,\n              47.239\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4964e4b0b290850ef1eb","contributors":{"authors":[{"text":"Lum, W. E.","contributorId":57847,"corporation":false,"usgs":true,"family":"Lum","given":"W. E.","affiliations":[],"preferred":false,"id":199913,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turney, G. L.","contributorId":95070,"corporation":false,"usgs":true,"family":"Turney","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":199914,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":28183,"text":"wri854039 - 1985 - Water quality in the Blue Creek arm of Lake Eufaula and Blue Creek, Oklahoma, March-October 1978","interactions":[],"lastModifiedDate":"2023-04-05T20:14:39.064405","indexId":"wri854039","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"85-4039","title":"Water quality in the Blue Creek arm of Lake Eufaula and Blue Creek, Oklahoma, March-October 1978","docAbstract":"Based on samples collected bimonthly for major inorganic and trace elements and monthly for biota and bacteria, water from the Blue Creek arm of Lake Eufaula and Blue Creek is suitable for most uses when compared to water-quality standards or criteria. Concentrations of most chemical constituents gradually increased from spring to fall. The concentrations generally were within established drinking-water standards, with the exception of iron and manganese.\r\nUsing water-quality determinations and biologic indicators, the water from Blue Creek arm of Lake Eufaula and Blue Creek is: (1) Soft and acidic with little mineral content and conductivity; (2) calm or very slowly moving; and (3) warm and enriched with organic matter.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri854039","usgsCitation":"Kurklin, J., 1985, Water quality in the Blue Creek arm of Lake Eufaula and Blue Creek, Oklahoma, March-October 1978: U.S. Geological Survey Water-Resources Investigations Report 85-4039, v, 91 p., https://doi.org/10.3133/wri854039.","productDescription":"v, 91 p.","costCenters":[],"links":[{"id":415295,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36223.htm","linkFileType":{"id":5,"text":"html"}},{"id":57021,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1985/4039/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":159239,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1985/4039/report-thumb.jpg"}],"country":"United States","state":"Oklahoma","otherGeospatial":"Blue Creek, Lake Eufaula","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -95.64,\n              35.083\n            ],\n            [\n              -95.64,\n              35\n            ],\n            [\n              -95.539,\n              35\n            ],\n            [\n              -95.539,\n              35.083\n            ],\n            [\n              -95.64,\n              35.083\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a07e4b07f02db5f9ae5","contributors":{"authors":[{"text":"Kurklin, J. K.","contributorId":59032,"corporation":false,"usgs":true,"family":"Kurklin","given":"J. K.","affiliations":[],"preferred":false,"id":199348,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70045312,"text":"70045312 - 1985 - Notes on sedimentation activities calendar year 1984","interactions":[],"lastModifiedDate":"2013-05-23T11:23:44","indexId":"70045312","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"title":"Notes on sedimentation activities calendar year 1984","docAbstract":"This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagency River Basin Committee, Subcommittee on Ground Water. The Subcommittee approved the proposal and agreed to issue this report as a means of effecting better coordination of the work of various Federal agencies in the field of sedimentation. From 1946 to 1947 the report was issued on a quarterly basis, from 1948 to 1953 reports were issued every 6 months, and from 1954 to the present the report has been issued annually.","language":"English","publisher":"U.S. Geological Survey, Office of Water Data Coordination","publisherLocation":"Reston, VA","usgsCitation":"U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation, 1985, Notes on sedimentation activities calendar year 1984, xxiii, 219 p.","productDescription":"xxiii, 219 p.","endPage":"246","additionalOnlineFiles":"N","temporalStart":"1984-01-01","temporalEnd":"1984-12-31","costCenters":[],"links":[{"id":270688,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70045312/report-thumb.jpg"},{"id":272711,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70045312/report.pdf"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5165386fe4b077fa94dadfe5","contributors":{"authors":[{"text":"U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation","contributorId":127893,"corporation":true,"usgs":false,"organization":"U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation","id":535470,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012710,"text":"70012710 - 1985 - Ice-lubricated gravity spreading of the Olympus Mons aureole deposits","interactions":[],"lastModifiedDate":"2025-02-28T17:04:04.35969","indexId":"70012710","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1963,"text":"Icarus","active":true,"publicationSubtype":{"id":10}},"title":"Ice-lubricated gravity spreading of the Olympus Mons aureole deposits","docAbstract":"<p><span>Gravity sliding and spreading at low strain rates can account for the general morphology and structure of the aureoles and basal scarp of Olympus Mons. Detachment sliding could have occurred around the volcano if either pore-fluid pressures were exceptionally high (greater than 90%) or the rocks had very low resistance to shear (about 1 × 10</span><sup>5</sup><span>&nbsp;Pa or 1 bar). Because of the vast areal extent and probable shallow depth of the detachment zone, development of ubiquitous, high pore-fluid pressures beneath aureole-forming material was unlikely. However, a zone of sufficiently weak material consisting of about 10% interstitial or interbedded ice could have been present. If so, a simple rheologic model for the aureole deposits can be applied that consists of a thin ductile layer overlain by a thicker brittle layer. According to this model, extensional deformation would have occurred near the shield and compressional deformation in its distal parts. Proximal grabens and distal corrugations on aureole surfaces support this model. A submarine slide at Kitimat Arm, British Columbia, is a valid qualitative analogy for the observed features and inferred emplacement style of the aureole deposits. Ground-ice processes have been considered the cause of many geologic features on Mars; a 3% average concentration of ground ice in the regolith is predicted by theoretical models for the ice budget and cryosphere. Ice may have been deposited in higher concentrations below the aureole-forming material; the source of the ice could have been juvenile water circulated hydrothermally by Olympus Mons volcanism. The basal scarp of Olympus Mons apparently demarcates the transition between the upper, stable part of the shield and its lower part that decoupled and formed the aureole deposits. This transition may reflect a change in the bulk shear strength of the shield, caused either by a radial dependence in the abundance of ice or fluid in the shield materials or by the concentration of intrusive dikes within the volcano. Other Martian volcanoes exhibit virtually no evidence of similar large-scale gravity spreading and basal scarps. Perhaps such evidence, if it existed, has been buried by lava flows, or perhaps the smaller size of other volcanoes did not permit the development of these features.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0019-1035(85)90117-4","issn":"00191035","usgsCitation":"Tanaka, K.L., 1985, Ice-lubricated gravity spreading of the Olympus Mons aureole deposits: Icarus, v. 62, no. 2, p. 191-206, https://doi.org/10.1016/0019-1035(85)90117-4.","productDescription":"16 p.","startPage":"191","endPage":"206","numberOfPages":"16","costCenters":[],"links":[{"id":221966,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"62","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a37fae4b0c8380cd61324","contributors":{"authors":[{"text":"Tanaka, K. L.","contributorId":31394,"corporation":false,"usgs":false,"family":"Tanaka","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":364292,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70169293,"text":"70169293 - 1985 - Kinds of damage that could result from a great earthquake in the central United States","interactions":[],"lastModifiedDate":"2016-04-12T15:03:30","indexId":"70169293","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Kinds of damage that could result from a great earthquake in the central United States","docAbstract":"<p>In the winter of 1811-12 a series of three great earthquakes occurred in the New Madrid, Missouri seismic zone in the central United States. In addition to the three principal shocks, at least 15 other earthquakes of intensity VIII or more occurred within a year of the first large earthquake on December 16, 1811. The three main shocks were felt over the entire eastern United States. They were strong enough to cause minor damage cause minor damage as far away as Indiana and Ohio on the north, the Carolinas on the east, and southern Mississippi to the south. They were strong enough to cause severe or structural damage in parts of Missouri, Illinois, Indiana, Kentucky, Tennessee, Mississippi, and Arkansas. A later section in this article describes what happened in the epicentral region. Fortunately, few people lived in the severely shaken area in 1811; that is not the case today. What would happen if a series of earthquakes as large and numerous as the \"New Madrid\" earthquakes were to occur in the New Madrid seismic zone today?</p>\n<p>The photographs accompanying this article show some typical structural damage that occurred during various earthquakes in the United States. Structural damage to buildings beings at intensity VIII in the Modified Mercalli intensity scale, a scale used for assigning numbers to earthquake effects. Minor or architectural damage (cracked plaster, windows, and chimneys) occurs at intensities VI and VII, and effects on people and small objects predominate at intensities below VI (earthquake felt, direction and duration noted, dishes broken and so forth).</p>\n<p>The first four photographs show damage caused by intensity VIII and above. None of the damage shown in the photographs in this report occurred in earthquakes larger than the 1811-12 New Madrid shocks, and most of the examples are from considerably smaller shocks. The first two photos show damage to masonry buildings, mostly old and unreinforced, none designed to be earthquake resistant. How many such buildings are in use in your community? The second pair of photos show damage to modern structures close to the epicenter of a magnitude 6.5 earthquake, a small shock compared to the magnitudes (8.4-8.7) of the New Madrid earthquakes.&nbsp;</p>","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Hooper, M.G., and Algermissen, S.T., 1985, Kinds of damage that could result from a great earthquake in the central United States: Earthquake Information Bulletin (USGS), v. 17, no. 3, p. 84-97.","productDescription":"14 p.","startPage":"84","endPage":"97","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319231,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Mississippi Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -90.81298828125,\n              37.97018468810549\n            ],\n            [\n              -87.95654296875,\n              37.94419750075404\n            ],\n            [\n              -88.2861328125,\n              34.876918445772084\n            ],\n            [\n              -90.758056640625,\n              34.89494244739732\n            ],\n            [\n              -90.81298828125,\n              37.97018468810549\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"17","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be43e4b0f59b85e02ea0","contributors":{"authors":[{"text":"Hooper, M. G.","contributorId":167776,"corporation":false,"usgs":false,"family":"Hooper","given":"M.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":623464,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Algermissen, S. T.","contributorId":39790,"corporation":false,"usgs":true,"family":"Algermissen","given":"S.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":623465,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012864,"text":"70012864 - 1985 - Correlation of the Rockland ash bed, a 400,000-year-old stratigraphic marker in northern California and western Nevada, and implications for middle Pleistocene paleogeography of central California","interactions":[],"lastModifiedDate":"2013-01-26T15:35:40","indexId":"70012864","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Correlation of the Rockland ash bed, a 400,000-year-old stratigraphic marker in northern California and western Nevada, and implications for middle Pleistocene paleogeography of central California","docAbstract":"Outcrops of an ash bed at several localities in northern California and western Nevada belong to a single air-fall ash layer, the informally named Rockland ash bed, dated at about 400,000 yr B.P. The informal Rockland pumice tuff breccia, a thick, coarse, compound tephra deposit southwest of Lassen Peak in northeastern California, is the near-source equivalent of the Rockland ash bed. Relations between initial thickness of the Rockland ash bed and distances to eruptive source suggest that the eruption was at least as great as that of the Mazama ash from Crater Lake, Oregon. Identification of the Rockland tephra allows temporal correlation of associated middle Pleistocene strata of diverse facies in separate depositional basins. Specifically, marine, littoral, estuarine, and fluvial strata of the Hookton and type Merced formations correlate with fluvial strata of the Santa Clara Formation and unnamed alluvium of Willits Valley and the Hollister area, in northwestern and west-central California, and with lacustrine beds of Mohawk Valley, fluvial deposits of the Red Bluff Formation of the eastern Sacramento Valley, and fluvial and glaciofluvial deposits of Fales Hot Spring, Carson City, and Washoe Valley areas in northeastern California and western Nevada. Stratigraphic relations of the Rockland ash bed and older tephra layers in the Great Valley and near San Francisco suggest that the southern Great Valley emerged above sea level about 2 my ago, that its southerly outlet to the ocean was closed sometime after about 2 my ago, and that drainage from the Great Valley to the ocean was established near the present, northerly outlet in the vicinity of San Francisco Bay about 0.6 my ago. ?? 1985.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0033-5894(85)90031-6","issn":"00335894","usgsCitation":"Sarna-Wojcicki, A., Meyer, C., Bowman, H.R., Timothy, H.N., Russell, P., Woodward, M., and Slate, J.L., 1985, Correlation of the Rockland ash bed, a 400,000-year-old stratigraphic marker in northern California and western Nevada, and implications for middle Pleistocene paleogeography of central California: Quaternary Research, v. 23, no. 2, p. 236-257, https://doi.org/10.1016/0033-5894(85)90031-6.","startPage":"236","endPage":"257","numberOfPages":"22","costCenters":[],"links":[{"id":487075,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1016/0033-5894(85)90031-6","text":"External Repository"},{"id":266545,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0033-5894(85)90031-6"},{"id":222447,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059fc47e4b0c8380cd4e1e7","contributors":{"authors":[{"text":"Sarna-Wojcicki, A.M. 0000-0002-0244-9149","orcid":"https://orcid.org/0000-0002-0244-9149","contributorId":104022,"corporation":false,"usgs":true,"family":"Sarna-Wojcicki","given":"A.M.","affiliations":[],"preferred":false,"id":364708,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meyer, C.E.","contributorId":104023,"corporation":false,"usgs":true,"family":"Meyer","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":364709,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowman, H. R.","contributorId":101626,"corporation":false,"usgs":true,"family":"Bowman","given":"H.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":364706,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Timothy, Hall N.","contributorId":63170,"corporation":false,"usgs":true,"family":"Timothy","given":"Hall","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":364704,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Russell, P.C.","contributorId":102856,"corporation":false,"usgs":true,"family":"Russell","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":364707,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Woodward, M.J.","contributorId":57434,"corporation":false,"usgs":true,"family":"Woodward","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":364703,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Slate, J. L.","contributorId":97039,"corporation":false,"usgs":true,"family":"Slate","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":364705,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70012774,"text":"70012774 - 1985 - A seismic-refraction profile across the San Andreas, Sargent, and Calaveras faults, west-central California","interactions":[],"lastModifiedDate":"2023-10-29T15:27:51.981468","indexId":"70012774","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"A seismic-refraction profile across the San Andreas, Sargent, and Calaveras faults, west-central California","docAbstract":"<p>In 1981, the United States Geological Survey recorded a seismic-refraction profile across the southern Santa Cruz Mountains in west-central California to examine the shallow velocity structure of this seismogenic region. This 40-km-long profile, which consisted of three shotpoints, extended northeastward from near Watsonville, California, to Coyote Lake, crossing the San Andreas, Sargent, and Calaveras faults. This entire region is characterized by a highly heterogeneous upper crust. West of Watsonville, 1 km of alluvium with a velocity of 2.12 km/sec overlies a basement with a velocity 5.45 km/sec. The abrupt deepening of basement by 1.5 km just east of Watsonville at a subsurface fault suggests that the Zayante fault to the north and the Vergeles fault to the south are connected. The Tertiary sediment at the San Andreas fault is 2.5 km thick and has a velocity of 3.34 km/sec. The San Andreas fault is not marked by any distinctive seismic velocity features, whereas a 1-km-wide low velocity zone is found at both the Sargent and Calaveras faults. East of the Sargent fault, the basement surface forms a broad anticlinal structure, with velocities ranging from 5.4 to 6.0 km/sec. From the anticlinal crest, basement dips to the east beneath the Santa Clara Valley and reaches a maximum depth of 1 km on the east side; the overlying alluvium has a velocity of 2.7 km/sec. At the crest of the basement anticlinal structure, a vertical low-velocity zone coincident with exposed serpentine provides strong evidence of faulting.</p>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0750010175","issn":"00371106","usgsCitation":"Mooney, W.D., and Colburn, R.H., 1985, A seismic-refraction profile across the San Andreas, Sargent, and Calaveras faults, west-central California: Bulletin of the Seismological Society of America, v. 75, no. 1, p. 175-191, https://doi.org/10.1785/BSSA0750010175.","productDescription":"17 p.","startPage":"175","endPage":"191","numberOfPages":"17","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":374998,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.geoscienceworld.org/ssa/bssa/article/75/1/175/118661/A-seismic-refract"},{"id":221971,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.34924316406251,\n              36.40359962073253\n            ],\n            [\n              -120.41839599609375,\n              36.40359962073253\n            ],\n            [\n              -120.41839599609375,\n              37.17126017626408\n            ],\n            [\n              -122.34924316406251,\n              37.17126017626408\n            ],\n            [\n              -122.34924316406251,\n              36.40359962073253\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"75","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaf2be4b0c8380cd8740e","contributors":{"authors":[{"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":364494,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Colburn, Robert H.","contributorId":75275,"corporation":false,"usgs":true,"family":"Colburn","given":"Robert","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":364495,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012793,"text":"70012793 - 1985 - Chemistry of thermal and nonthermal springs in the vicinity of Lassen Volcanic National Park","interactions":[],"lastModifiedDate":"2012-03-12T17:19:01","indexId":"70012793","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Chemistry of thermal and nonthermal springs in the vicinity of Lassen Volcanic National Park","docAbstract":"Meaningful applications of water geothermometry to thermal springs in and around Lassen Volcanic National Park (LVNP) are limited to Growler Hot Spring and Morgan Hot Springs. Most hot springs located within LVNP are low-chloride, acid-sulfate waters associated with nearby steam vents. This type of hot-spring activity is characteristically found above vapor-dominated hydrothermal systems. These acid-sulfate waters are not generally useful for liquid chemical geothermometry, however, because their chemical compositions result from water-rock interaction at relatively shallow depths. Thermal waters at Drakesbad and in Little Hot Springs Valley have neutral-pH, low-Cl concentrations and have estimated Na-K-Ca and Na-Li geothermometer temperatures close to measured spring temperatures of 65 to 95??C. Hot-spring waters located south of LVNP at Growler Hot Spring, Morgan Hot Springs, and in the south-central part of LVNP in the Walker \"O\" No. 1 well at Terminal Geyser are rich in chloride and yield calculated geothermometer temperatures between 220 and 230??C. These thermal waters probably originate within a zone of upflow of high-enthalpy fluid inside LVNP and cool conductively during lateral flow to the south and southeast. ?? 1985.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03770273","usgsCitation":"Thompson, J., 1985, Chemistry of thermal and nonthermal springs in the vicinity of Lassen Volcanic National Park: Journal of Volcanology and Geothermal Research, v. 25, no. 1-2, p. 81-104.","startPage":"81","endPage":"104","numberOfPages":"24","costCenters":[],"links":[{"id":222379,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5ade4b0c8380cd4c369","contributors":{"authors":[{"text":"Thompson, J. M.","contributorId":77142,"corporation":false,"usgs":true,"family":"Thompson","given":"J. M.","affiliations":[],"preferred":false,"id":364542,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012844,"text":"70012844 - 1985 - Crustal refraction profile of the Long Valley caldera, California, from the January 1983 Mammoth Lakes earthquake swarm","interactions":[],"lastModifiedDate":"2023-10-28T16:06:54.832392","indexId":"70012844","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Crustal refraction profile of the Long Valley caldera, California, from the January 1983 Mammoth Lakes earthquake swarm","docAbstract":"<p>Seismic-refraction profiles recorded north of Mammoth Lakes, California, using earthquake sources from the January 1983 swarm complement earlier explosion refraction profiles and provide velocity information from deeper in the crust in the area of the Long Valley caldera. Eight earthquakes from a depth range of 4.9 to 8.0 km confirm the observation of basement rocks with seismic velocities ranging from 5.8 to 6.4 km/sec extending at least to depths of 20 km. The data provide further evidence for the existence of a partial melt zone beneath Long Valley caldera and constrain its geometry. This evidence is in the form of pronounced secondary arrivals, which we interpret as waves that have propagated through a volume with low Q (the magma chamber) and reflected from the lower boundary of the southern edge of this volume at depths of 18 to 20 km.</p>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0750010211","issn":"00371106","usgsCitation":"Luetgert, J.H., and Mooney, W.D., 1985, Crustal refraction profile of the Long Valley caldera, California, from the January 1983 Mammoth Lakes earthquake swarm: Bulletin of the Seismological Society of America, v. 75, no. 1, p. 211-221, https://doi.org/10.1785/BSSA0750010211.","productDescription":"11 p.","startPage":"211","endPage":"221","numberOfPages":"11","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":422236,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.geoscienceworld.org/ssa/bssa/article/75/1/211/118669/Crustal-refraction-profile-of-the-Long-Valley"},{"id":222171,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mammoth Lakes","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.01763916015625,\n              37.61858263247881\n            ],\n            [\n              -118.93592834472656,\n              37.61858263247881\n            ],\n            [\n              -118.93592834472656,\n              37.665342132088284\n            ],\n            [\n              -119.01763916015625,\n              37.665342132088284\n            ],\n            [\n              -119.01763916015625,\n              37.61858263247881\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"75","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2e6e4b0c8380cd4b487","contributors":{"authors":[{"text":"Luetgert, James H. luetgert@usgs.gov","contributorId":4203,"corporation":false,"usgs":true,"family":"Luetgert","given":"James","email":"luetgert@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":364657,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":364656,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012809,"text":"70012809 - 1985 - COMPARISON OF RECORDING CURRENT METERS USED FOR MEASURING VELOCITIES IN SHALLOW WATERS OF SAN FRANCISCO BAY, CALIFORNIA.","interactions":[],"lastModifiedDate":"2016-07-27T10:41:50","indexId":"70012809","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"COMPARISON OF RECORDING CURRENT METERS USED FOR MEASURING VELOCITIES IN SHALLOW WATERS OF SAN FRANCISCO BAY, CALIFORNIA.","docAbstract":"<p>The authors determine the feasibility of collecting reliable current-meter data in shallow water under natural conditions. The study involved field testing four types of recording current meters (different speed sensors) and comparing data recorded by the meters under different field conditions. Speeds recorded by the current meters at slack water and during maximum flows were compared during calm and windy conditions at various tide levels.</p>","largerWorkTitle":"Oceans Conference Record (IEEE)","conferenceTitle":"Ocean Engineering and the Environment - Conference Record.","conferenceLocation":"San Diego, CA, USA","language":"English","publisher":"IEEE","publisherLocation":"New York, NY, USA","issn":"01977385","usgsCitation":"Gartner, J.W., and Oltmann, R.N., 1985, COMPARISON OF RECORDING CURRENT METERS USED FOR MEASURING VELOCITIES IN SHALLOW WATERS OF SAN FRANCISCO BAY, CALIFORNIA., <i>in</i> Oceans Conference Record (IEEE), San Diego, CA, USA, p. 731-737.","startPage":"731","endPage":"737","numberOfPages":"7","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true}],"links":[{"id":222618,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2dae4b0c8380cd4b429","contributors":{"authors":[{"text":"Gartner, Jeffrey W.","contributorId":77524,"corporation":false,"usgs":true,"family":"Gartner","given":"Jeffrey","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":364585,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oltmann, Richard N.","contributorId":63377,"corporation":false,"usgs":true,"family":"Oltmann","given":"Richard","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":364584,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012776,"text":"70012776 - 1985 - PROCEDURES FOR ACCURATE PRODUCTION OF COLOR IMAGES FROM SATELLITE OR AIRCRAFT MULTISPECTRAL DIGITAL DATA.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:01","indexId":"70012776","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2348,"text":"Journal of Imaging Technology","active":true,"publicationSubtype":{"id":10}},"title":"PROCEDURES FOR ACCURATE PRODUCTION OF COLOR IMAGES FROM SATELLITE OR AIRCRAFT MULTISPECTRAL DIGITAL DATA.","docAbstract":"Because the display and interpretation of satellite and aircraft remote-sensing data make extensive use of color film products, accurate reproduction of the color images is important. To achieve accurate color reproduction, the exposure and chemical processing of the film must be monitored and controlled. By using a combination of sensitometry, densitometry, and transfer functions that control film response curves, all of the different steps in the making of film images can be monitored and controlled. Because a sensitometer produces a calibrated exposure, the resulting step wedge can be used to monitor the chemical processing of the film. Step wedges put on film by image recording machines provide a means of monitoring the film exposure and color balance of the machines.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Imaging Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"07473583","usgsCitation":"Duval, J.S., 1985, PROCEDURES FOR ACCURATE PRODUCTION OF COLOR IMAGES FROM SATELLITE OR AIRCRAFT MULTISPECTRAL DIGITAL DATA.: Journal of Imaging Technology, v. 10, no. 1, p. 16-22.","startPage":"16","endPage":"22","numberOfPages":"7","costCenters":[],"links":[{"id":222036,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a737ce4b0c8380cd77077","contributors":{"authors":[{"text":"Duval, Joseph S.","contributorId":22314,"corporation":false,"usgs":true,"family":"Duval","given":"Joseph","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":364499,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012808,"text":"70012808 - 1985 - Movement of volatile organics through a fractured rock aquifer","interactions":[],"lastModifiedDate":"2024-03-20T23:10:37.395579","indexId":"70012808","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Movement of volatile organics through a fractured rock aquifer","docAbstract":"<div class=\"abstract-group \"><div class=\"article-section__content en main\"><p>In response to the detection of contaminants in several municipal water supply wells in a northern New Jersey community, the New Jersey Department of Environmental Protection (NJDEP) undertook a detailed assessment of the movement of volatile organics through the Brunswick fractured rock aquifer. Understanding the directional or anisotropic behavior of ground-water flow within the aquifer proved to be a crucial factor for identification of the sources of contamination. Since the ground-water flow occurs in a direction predominantly parallel to the strike of the aquifer, the resulting distribution of contaminants allowed the differentiation of two overlapping plumes, each over 4,000 feet in length and each emerging from discrete adjacent sources.</p><p>The investigations and subsequent cleanup agreements between the NJDEP and the responsible parties allowed savings of several million dollars for the U.S. EPA's Super-fund Program which otherwise would have been used for cleanup of the site. The privately funded cleanup program includes treatment of the affected municipal wells and on-site remedial actions designed to fully restore the aquifer within 10 years.</p></div></div>","language":"English","publisher":"National Groundwater Association","doi":"10.1111/j.1745-6584.1985.tb01499.x","issn":"0017467X","usgsCitation":"Spayd, S., 1985, Movement of volatile organics through a fractured rock aquifer: Groundwater, v. 23, no. 4, p. 496-502, https://doi.org/10.1111/j.1745-6584.1985.tb01499.x.","productDescription":"7 p.","startPage":"496","endPage":"502","numberOfPages":"7","costCenters":[],"links":[{"id":222617,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-03-21","publicationStatus":"PW","scienceBaseUri":"505a5f25e4b0c8380cd70dc8","contributors":{"authors":[{"text":"Spayd, S.E.","contributorId":54347,"corporation":false,"usgs":true,"family":"Spayd","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":364583,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012909,"text":"70012909 - 1985 - A comparative study of stream water and stream sediment as geochemical exploration media in the Rio Tanama porphyry copper district, Puerto Rico","interactions":[],"lastModifiedDate":"2025-03-07T16:15:29.678761","indexId":"70012909","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"A comparative study of stream water and stream sediment as geochemical exploration media in the Rio Tanama porphyry copper district, Puerto Rico","docAbstract":"<div class=\"u-margin-s-bottom\">To test the relative effectiveness of stream water and sediment as geochemical exploration media in the Rio Tanama porphyry copper district of Puerto Rico, we collected and subsequently analyzed samples of water and sediment from 29 sites in the rivers and tributaries of the district. Copper, Mo, Pb, Zn,<span>&nbsp;</span><i>SO</i><sub>4</sub><sup>2−</sup>, and pH were determined in the waters; Cu, Mo, Pb, and Zn were determined in the sediments. In addition, copper in five partial extractions from the sediments was determined. Geochemical contrast (anomaly-to-background quotient) was the principal criterion by which the effectiveness of the two media and the five extractions were judged.</div><div class=\"u-margin-s-bottom\">Among the distribution patterns of metals in stream water, that of copper most clearly delineates the known porphyry copper deposits and yields the longest discernable dispersion train. The distribution patterns of Mo, Pb, and Zn in water show little relationship to the known mineralization. The distribution of<span>&nbsp;</span><i>SO</i><sub>4</sub><sup>2−</sup><span>&nbsp;</span>in water delineates the copper deposits and also the more extensive pyrite alteration in the district; its recognizable downstream dispersion train is substantially longer than those of the metals, either in water or sediment. Low pH values in small tributaries delineate areas of known sulfide mineralization.</div><div class=\"u-margin-s-bottom\">The distribution patterns of copper in sediments clearly delineate the known deposits, and the dispersion trains are longer than those of copper in water.</div><div class=\"u-margin-s-bottom\">The partial determinations of copper related to secondary iron and manganese oxides yield the strongest geochemical contrasts and longest recognizable dispersion trains. Significantly high concentrations of molybdenum in sediments were found at only three sites, all within one-half km downstream of the known copper deposits. The distribution patterns of lead and zinc in sediments are clearly related to the known primary lead-zinc haloes around the copper deposits. The recognizable downstream dispersion trains of lead and zinc are shorter than those of copper.</div>","language":"English","publisher":"Elsevier","doi":"10.1016/0375-6742(85)90044-5","issn":"03756742","usgsCitation":"Learned, R.E., Chao, T.T., and Sanzolone, R.F., 1985, A comparative study of stream water and stream sediment as geochemical exploration media in the Rio Tanama porphyry copper district, Puerto Rico: Journal of Geochemical Exploration, v. 24, no. 2, p. 175-195, https://doi.org/10.1016/0375-6742(85)90044-5.","productDescription":"21 p.","startPage":"175","endPage":"195","numberOfPages":"21","costCenters":[],"links":[{"id":222232,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e351e4b0c8380cd45f78","contributors":{"authors":[{"text":"Learned, R. E.","contributorId":9638,"corporation":false,"usgs":true,"family":"Learned","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":364810,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chao, T. T.","contributorId":31900,"corporation":false,"usgs":true,"family":"Chao","given":"T.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":364811,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanzolone, R. F.","contributorId":64199,"corporation":false,"usgs":true,"family":"Sanzolone","given":"R.","middleInitial":"F.","affiliations":[],"preferred":false,"id":364812,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70012865,"text":"70012865 - 1985 - Calaveras reversed: Westward younging is indicated","interactions":[],"lastModifiedDate":"2024-01-30T12:21:51.92203","indexId":"70012865","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Calaveras reversed: Westward younging is indicated","docAbstract":"<div id=\"15569308\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>Samples of limestone collected from strata in the southern part of the western metamorphic belt of the Sierra Nevada, which traditionally have been assigned to the Calaveras Formation, have yielded Early Triassic conodonts, and samples of metavolcanic rock indicate an Early Jurassic Rb-Sr age. These ages, together with previously published fossil and isotopic data, are consistent with general westward younging of units rather than with eastward younging as has been assumed until recently by many workers, chiefly on the basis of sparse observations of bedding facings. The rocks are strongly deformed, and the possibility that tectonism rather than stratigraphic succession accounts for the age pattern cannot be dismissed.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1985)13<338:CRWYII>2.0.CO;2","issn":"00917613","usgsCitation":"Bateman, P.C., Harris, A., Kistler, R.W., and Krauskopf, K., 1985, Calaveras reversed: Westward younging is indicated: Geology, v. 13, no. 5, p. 338-341, https://doi.org/10.1130/0091-7613(1985)13<338:CRWYII>2.0.CO;2.","productDescription":"4 p.","startPage":"338","endPage":"341","numberOfPages":"4","costCenters":[],"links":[{"id":222502,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2f1e4b0c8380cd4b4cc","contributors":{"authors":[{"text":"Bateman, P. C.","contributorId":27851,"corporation":false,"usgs":true,"family":"Bateman","given":"P.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":364710,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harris, A. G.","contributorId":39791,"corporation":false,"usgs":true,"family":"Harris","given":"A. G.","affiliations":[],"preferred":false,"id":364713,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kistler, R. W.","contributorId":36112,"corporation":false,"usgs":true,"family":"Kistler","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":364712,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Krauskopf, K.B.","contributorId":28943,"corporation":false,"usgs":true,"family":"Krauskopf","given":"K.B.","email":"","affiliations":[],"preferred":false,"id":364711,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70012777,"text":"70012777 - 1985 - Linear inversion of transmitted acoustic wave fields for three-dimensional modulus and density perturbations using a born-type approximation","interactions":[],"lastModifiedDate":"2023-10-29T15:20:05.802651","indexId":"70012777","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Linear inversion of transmitted acoustic wave fields for three-dimensional modulus and density perturbations using a born-type approximation","docAbstract":"<p>A Born approximation is used to linearize the relationship, in the horizontal-wavenumber and frequency domains, between lateral perturbations of modulus and density in a layered half-space and the acoustic wave field observed at the surface when a plane wave is incident from below. The resulting equations can be used to perform a linear inversion of observed acoustic wave fields to obtain lateral perturbations in modulus and density. Since modulus and density effects are separated, gravity observations can be included in the inversion procedure without any assumptions about the relationship between density and acoustic velocity. Tests with synthetic data sets reveal that the inversion method gives useful results when the spatial scales of the inhomogeneities are smaller than several acoustic wavelengths. The inclusion of gravity observations in the inversion reduces the strong negative tradeoff between modulus and density perturbations.</p>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0750010093","issn":"00371106","usgsCitation":"Stauber, D.A., 1985, Linear inversion of transmitted acoustic wave fields for three-dimensional modulus and density perturbations using a born-type approximation: Bulletin of the Seismological Society of America, v. 75, no. 1, p. 93-114, https://doi.org/10.1785/BSSA0750010093.","productDescription":"22 p.","startPage":"93","endPage":"114","numberOfPages":"22","costCenters":[],"links":[{"id":222037,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"1","noUsgsAuthors":false,"publicationDate":"1985-02-01","publicationStatus":"PW","scienceBaseUri":"505a40e6e4b0c8380cd65118","contributors":{"authors":[{"text":"Stauber, Douglas A.","contributorId":90870,"corporation":false,"usgs":true,"family":"Stauber","given":"Douglas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":364500,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012866,"text":"70012866 - 1985 - FLUORINE IN COLORADO OIL SHALE.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:09","indexId":"70012866","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"FLUORINE IN COLORADO OIL SHALE.","docAbstract":"Oil shale from the lower part of the Eocene Green River Formation in the Piceance Creek Basin, Colorado, averages 0. 13 weight percent fluorine, which is about twice that found in common shales, but is the same as the average amount found in some oil shales from other parts of the world. Some fluorine may reside in fluorapatite; however, limited data suggest that cryolite may be quantitatively more important. To gain a better understanding of the detailed distribution of fluorine in the deeper nahcolite-bearing oil shales, cores were selected for study from two exploratory holes drilled in the northern part of the Piceance Creek Basin where the oil shales reach their maximum thickness and grade.","largerWorkTitle":"Oil Shale Symposium Proceedings","conferenceTitle":"Eighteenth Oil Shale Symposium Proceedings.","conferenceLocation":"Grand Junction, CO, USA","language":"English","publisher":"Colorado Sch of Mines","publisherLocation":"Golden, CO, USA","usgsCitation":"Dyni, J.R., 1985, FLUORINE IN COLORADO OIL SHALE., <i>in</i> Oil Shale Symposium Proceedings, Grand Junction, CO, USA, p. 9-20.","startPage":"9","endPage":"20","numberOfPages":"12","costCenters":[],"links":[{"id":222503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e7be4b0c8380cd53498","contributors":{"editors":[{"text":"Gary James H.","contributorId":128340,"corporation":true,"usgs":false,"organization":"Gary James H.","id":536256,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Dyni, John R. jdyni@usgs.gov","contributorId":756,"corporation":false,"usgs":true,"family":"Dyni","given":"John","email":"jdyni@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":364714,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012791,"text":"70012791 - 1985 - Determination of interstitial chloride in shales and consolidated rocks by a precision leaching technique","interactions":[],"lastModifiedDate":"2019-11-25T13:51:29","indexId":"70012791","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3411,"text":"Society of Petroleum Engineers journal","active":true,"publicationSubtype":{"id":10}},"title":"Determination of interstitial chloride in shales and consolidated rocks by a precision leaching technique","docAbstract":"<p><span>We have devised a technique for determining chloride in interstitial water of consolidated rocks. Samples of rocks ranging from 5 to 10 g are crushed and sieved under controlled conditions and then ground with distilled water to submicron size in a closed mechanical mill. After ultra-centrifugation, chloride content is determined by coulometric titration. The chloride concentrations and total pore-water concentrations, obtained earlier from the same pore-water concentrations, obtained earlier from the same samples by low-temperature vacuum desiccation, are used to arrive at the \"original\" pore-water chloride concentrations by a simple iteration procedure. Interstitial chlorinity results obtained from Cretaceous and Jurassic strata in the Gulf of Mexico coastal areas ranged from 20 to 100 g/kg Cl with reproducibility approaching +/- 1%. We have also applied the technique to igneous and metamorphic bedrocks as well as ocean basalts containing 1 % water or less. Chloride values ranging from 6.7 to 20 g/kg with a reproducibility of about 5% were obtained.</span></p>","language":"English","publisher":"Society of Petroleum Engineers","doi":"10.2118/12724-PA","issn":"01977520","usgsCitation":"Manheim, F., Peck, E., and Lane, C.M., 1985, Determination of interstitial chloride in shales and consolidated rocks by a precision leaching technique: Society of Petroleum Engineers journal, v. 25, no. 5, p. 704-710, https://doi.org/10.2118/12724-PA.","productDescription":"7 p.","startPage":"704","endPage":"710","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":222377,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"5","noUsgsAuthors":false,"publicationDate":"1985-10-01","publicationStatus":"PW","scienceBaseUri":"5059fd43e4b0c8380cd4e71a","contributors":{"authors":[{"text":"Manheim, Frank T. 0000-0003-4005-4524","orcid":"https://orcid.org/0000-0003-4005-4524","contributorId":45294,"corporation":false,"usgs":true,"family":"Manheim","given":"Frank T.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":364536,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peck, E.E.","contributorId":77302,"corporation":false,"usgs":true,"family":"Peck","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":364537,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lane, Candice M.","contributorId":80823,"corporation":false,"usgs":true,"family":"Lane","given":"Candice","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":364538,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70012740,"text":"70012740 - 1985 - Time scales and mechanisms of estuarine variability, a synthesis from studies of San Francisco Bay","interactions":[],"lastModifiedDate":"2018-09-13T15:39:50","indexId":"70012740","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Time scales and mechanisms of estuarine variability, a synthesis from studies of San Francisco Bay","docAbstract":"<p>This review of the preceding papers suggests that temporal variability in San Francisco Bay can be characterized by four time scales (hours, days-weeks, months, years) and associated with at least four mechanisms (variations in freshwater inflow, tides, wind, and exchange with coastal waters). The best understood component of temporal variability is the annual cycle, which is most obviously influenced by seasonal variations in freshwater inflow. The winter season of high river discharge is characterized by: large-scale redistribution of the salinity field (e.g. the upper estuary becomes a riverine system); enhanced density stratification and gravitational circulation with shortened residence times in the bay; decreased tissue concentrations of some contaminants (e.g. copper) in resident bivalves; increased estuarine inputs of river-borne materials such as dissolved inorganic nutrients (N, P, Si), suspended sediments, and humic materials; radical redistributions of pelagic organisms such as copepods and fish; low phutoplankton biomass and primary productivity in the upper estuary; and elimination of freshwater-intolerant species of macroalgae and benthic infauna from the upper estuary. Other mechanisms modulate this river-driven annual cycle: (1) wind speed is highly seasonal (strongest in summer) and causes seasonal variations in atmosphere-water column exchange of dissolved gases, resuspension, and the texture of surficial sediments; (2) seasonal variations in the coastal ocean (e.g. the spring-summer upwelling season) influence species composition of plankton and nutrient concentrations that are advected into the bay; and (3) the annual temperature cycle influences a few selected features (e.g. production and hatching of copepod resting eggs). Much of the interannual variability in San Francisco Bay is also correlated with freshwater inflow: wet years with persistently high river discharge are characterized by persistent winter-type conditions. Mechanisms of short-term variability are not as well understood, although some responses to storm events (pulses in residual currents from wind forcing, erosion of surficial sediments by wind waves, redistribution of fish populations) and the neap-spring tidal cycle (enhanced salinity stratification, gravitational circulation, and phytoplankton biomass during neap tides) have been quantified. In addition to these somewhat predictable features of variability are (1) largely unexplained episodic events (e.g. anomalous blooms of drift macroalgae), and (2) long-term trends directly attributable to human activities (e.g. introduction of exotic species that become permanent members of the biota). ?? 1985 Dr W. Junk Publishers.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00048697","issn":"00188158","usgsCitation":"Cloern, J., and Nichols, F., 1985, Time scales and mechanisms of estuarine variability, a synthesis from studies of San Francisco Bay: Hydrobiologia, v. 129, no. 1, p. 229-237, https://doi.org/10.1007/BF00048697.","startPage":"229","endPage":"237","numberOfPages":"9","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"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":205237,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00048697"},{"id":222438,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"129","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3abe4b08c986b325f24","contributors":{"authors":[{"text":"Cloern, J. E.","contributorId":59453,"corporation":false,"usgs":true,"family":"Cloern","given":"J. E.","affiliations":[],"preferred":false,"id":364401,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, F.H.","contributorId":88020,"corporation":false,"usgs":true,"family":"Nichols","given":"F.H.","affiliations":[],"preferred":false,"id":364402,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012261,"text":"70012261 - 1985 - Unit hydrograph approximations assuming linear flow through topologically random channel networks","interactions":[],"lastModifiedDate":"2020-03-05T20:03:23","indexId":"70012261","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Unit hydrograph approximations assuming linear flow through topologically random channel networks","docAbstract":"<p><span>The instantaneous unit Hydrograph (IUH) of a drainage basin is derived in terms of fundamental basin characteristics (</span><i>Z</i><span>, α, β), where α parameterizes the link (channel segment) length distribution, and β is a vector of hydraulic parameters,<span>&nbsp;</span></span><i>Z</i><span><span>&nbsp;</span>is one of three basin topological properties,<span>&nbsp;</span></span><i>N</i><span>, (</span><i>N</i><span>,<span>&nbsp;</span></span><i>D</i><span>), or (</span><i>N</i><span>,<span>&nbsp;</span></span><i>M</i><span>), where<span>&nbsp;</span></span><i>N</i><span><span>&nbsp;</span>is magnitude (number of first-order streams),<span>&nbsp;</span></span><i>D</i><span><span>&nbsp;</span>is diameter (mainstream length), and<span>&nbsp;</span></span><i>M</i><span><span>&nbsp;</span>is order. The IUH is derived based on assumptions that the links are independent and identically distributed random variables and that the network is a member of a topologically random population. Linear routing schemes, including translation, diffusion, and general linear routing are used, and constant drainage density is assumed. By using (</span><i>N</i><span>, α, β) as the fundamental basin characteristics, asymptotic (for large<span>&nbsp;</span></span><i>N</i><span>) considerations lead to a Weibull probability density function for the IUH, with time to peak given by<span>&nbsp;</span></span><i>t<sub>p</sub></i><span><span>&nbsp;</span>= (2</span><i>N</i><span>)</span><sup>½</sup><span><span>&nbsp;</span>α</span><sup>*</sup><span>/β</span><sup>*</sup><span><span>&nbsp;</span>where α</span><sup>*</sup><span><span>&nbsp;</span>is mean link length, and β</span><sup>*</sup><span><span>&nbsp;</span>is a scalar hydraulic parameter (usually average celerity). This asymptotic IUH is identical for all linear routing schemes.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR021i005p00743","usgsCitation":"Troutman, B.M., and Karlinger, M.R., 1985, Unit hydrograph approximations assuming linear flow through topologically random channel networks: Water Resources Research, v. 21, no. 5, p. 743-754, https://doi.org/10.1029/WR021i005p00743.","productDescription":"12 p.","startPage":"743","endPage":"754","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":222125,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"5","noUsgsAuthors":false,"publicationDate":"2008-01-08","publicationStatus":"PW","scienceBaseUri":"505bbc88e4b08c986b328cb1","contributors":{"authors":[{"text":"Troutman, Brent M.","contributorId":195329,"corporation":false,"usgs":false,"family":"Troutman","given":"Brent","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":363118,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karlinger, Michael R.","contributorId":10777,"corporation":false,"usgs":true,"family":"Karlinger","given":"Michael","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":363119,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013132,"text":"70013132 - 1985 - Time scales of change in the San Francisco Bay benthos","interactions":[],"lastModifiedDate":"2016-07-27T12:49:53","indexId":"70013132","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Time scales of change in the San Francisco Bay benthos","docAbstract":"<p>Results from multi-year investigations in the San Francisco Bay estuary show that large abundance fluctuations within benthic macroinvertebrate populations reflect both (1) within-year periodicity of reproduction, recruitment, and mortality that is not necessarily coincident with seasonal changes of the environment (e.g., the annual temperature cycle), and (2) aperiodic density changes (often larger than within-year fluctuations) following random perturbations of the environment. Density peaks of the small, short-lived estuarine invertebrates that comprise the vast majority of individuals in the bay's relatively homogeneous benthic community normally occur between spring and autumn depending on the species, in large part a reflection of reproductive periodicity. However, because mild winters permit reproductive activity in some of the common species throughout much of the year, other factors are important to within-year density fluctuations in the community. Seasonally predictable changes in freshwater inflow, wind and tidal mixing, microalgal biomass, and sediment erosion/deposition patterns all contribute to observed seasonal changes in abundance. For example, the commonly observed decline in abundance during winter reflects both short-lived species that die after reproducing and the stress of winter conditions (e.g., inundation by less saline, sediment-laden water and the decline in both planktonic and benthic algal biomass - a direct source of food for the shallow-water benthos). On the other hand, data from several studies suggest that observed 'recruitment' and 'mortality' may in fact be the migration of juveniles and adults to and from study sites. For example, the common amphipod Ampelisca abdita apparently moves from shallow to deep water, or from up-estuary to down-estuary locations, coincident with periods of high river runoff in winter. Growth of individuals within the few studied species populations is also highly seasonal, and appears to be coincident with seasonal increases in the abundance of planktonic and/or benthic microalgae. Two multi-year studies have shown that, in addition to within-year periodicity, major restructuring of the benthic community can occur as a result of anomalous (usually climate-related) perturbations of the benthic habitat. For example, during wet years freshwater-intolerant species disappear from the upper part of the estuary and from shallow areas of the bay. During a two-year drought these same species colonized the extreme upper end of the estuary in large numbers. Other aperiodic perturbations include localized instances of sediment erosion or deposition and algal mat accumulations that greatly depress abundance. Additionally, there is evidence (observations that the clam Macoma balthica establishes large populations only when the amphipod A. abdita is not abundant) that species interactions can contribute greatly to interannual variations. Thus, while community composition may change little over the long term, year-to-year predictability of species abundances is low. ?? 1985 Dr W. Junk Publishers.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00048691","issn":"00188158","usgsCitation":"Nichols, F., and Thompson, J., 1985, Time scales of change in the San Francisco Bay benthos: Hydrobiologia, v. 129, no. 1, p. 121-138, https://doi.org/10.1007/BF00048691.","startPage":"121","endPage":"138","numberOfPages":"18","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":220350,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205029,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00048691"}],"volume":"129","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3ace4b08c986b325f30","contributors":{"authors":[{"text":"Nichols, F.H.","contributorId":88020,"corporation":false,"usgs":true,"family":"Nichols","given":"F.H.","affiliations":[],"preferred":false,"id":365366,"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":365367,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012260,"text":"70012260 - 1985 - Wave energy saturation on a natural beach of variable slope","interactions":[],"lastModifiedDate":"2024-06-27T15:52:41.013736","indexId":"70012260","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":9107,"text":"Journal of Geophysical Research - Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Wave energy saturation on a natural beach of variable slope","docAbstract":"<p><span>Time series of flow were measured across the inner surf zone during a storm. These data were used to quantify the dependence of wave height (transformed from measured flow) and velocity on local slope and depth. Similar to previous studies, as incident waves broke and propagated into the surf zone, wave energy became saturated, and wave height was strongly dependent on depth. However, the ratio of rms wave height to local depth (γ</span><sub>rms</sub><span>) was found not to be constant but to vary between 0.29 and 0.55; γ</span><sub>rms</sub><span>&nbsp;increased with local slope and was independent of deepwater wave steepness. Thus the surf zone similarity parameter (the ratio of slope to the square root of steepness) did not adequately parameterize γ</span><sub>rms</sub><span>.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JC090iC06p11939","issn":"01480227","usgsCitation":"Sallenger, A.H., and Holman, R., 1985, Wave energy saturation on a natural beach of variable slope: Journal of Geophysical Research - Oceans, v. 90, no. C6, p. 11939-11944, https://doi.org/10.1029/JC090iC06p11939.","productDescription":"6 p.","startPage":"11939","endPage":"11944","costCenters":[],"links":[{"id":222124,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"C6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bcf91e4b08c986b32e998","contributors":{"authors":[{"text":"Sallenger, A. H. Jr.","contributorId":8818,"corporation":false,"usgs":true,"family":"Sallenger","given":"A.","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":363116,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holman, R.A.","contributorId":73751,"corporation":false,"usgs":true,"family":"Holman","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":363117,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}