Measurements made once or twice a year from 1977 through 1982 show large correlated changes in gravity, elevation, and strain in several southern California networks. Precise gravity surveys indicate changes of as much as 25 microgals between surveys 6 months apart. Repeated surveys show that annual elevation changes as large as 100 millimeters occur along baselines 40 to 100 kilometers long. Laser-ranging surveys reveal coherent changes in areal strain of 1 to 2 parts per million occurred over much of southern California during 1978 and 1979. Although the precision of these measuring systems has been questioned, the rather good agreement among them suggests that the observed changes reflect true crustal deformation.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.219.4589.1215","issn":"00368075","usgsCitation":"Jachens, R., Thatcher, W., Roberts, C.W., and Stein, R., 1983, Correlation of changes in gravity, elevation, and strain in southern California: Science, v. 219, no. 4589, p. 1215-1217, https://doi.org/10.1126/science.219.4589.1215.","productDescription":"3 p.","startPage":"1215","endPage":"1217","costCenters":[],"links":[{"id":221519,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"southern California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -120.81728538128881,\n 35.74255876034496\n ],\n [\n -120.81728538128881,\n 32.59549660827203\n ],\n [\n -114.20893312623092,\n 32.59549660827203\n ],\n [\n -114.20893312623092,\n 35.74255876034496\n ],\n [\n -120.81728538128881,\n 35.74255876034496\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"219","issue":"4589","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc36e4b0c8380cd4e19d","contributors":{"authors":[{"text":"Jachens, R.C.","contributorId":55433,"corporation":false,"usgs":true,"family":"Jachens","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":360805,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thatcher, W.","contributorId":32669,"corporation":false,"usgs":true,"family":"Thatcher","given":"W.","email":"","affiliations":[],"preferred":false,"id":360804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roberts, C. W.","contributorId":61816,"corporation":false,"usgs":true,"family":"Roberts","given":"C.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":360806,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stein, R.S.","contributorId":8875,"corporation":false,"usgs":true,"family":"Stein","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":360803,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70208964,"text":"70208964 - 1983 - Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY","interactions":[],"lastModifiedDate":"2020-03-09T13:42:26","indexId":"70208964","displayToPublicDate":"1983-03-09T13:39:53","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY","docAbstract":"No abstract available.
","language":"English","publisher":"GSA","doi":"10.1130/0091-7613(1983)11<618a:CAROMA>2.0.CO;2","usgsCitation":"Ketner, K.B., 1983, Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY: Geology, v. 11, no. 10, p. 618-618, https://doi.org/10.1130/0091-7613(1983)11<618a:CAROMA>2.0.CO;2.","productDescription":"1 p.","startPage":"618","endPage":"618","costCenters":[],"links":[{"id":373018,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ketner, Keith B.","contributorId":957,"corporation":false,"usgs":true,"family":"Ketner","given":"Keith","email":"","middleInitial":"B.","affiliations":[],"preferred":true,"id":784210,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208963,"text":"70208963 - 1983 - Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY","interactions":[],"lastModifiedDate":"2020-03-09T13:29:32","indexId":"70208963","displayToPublicDate":"1983-03-09T13:27:19","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY","docAbstract":"No abstract available.
","language":"English","publisher":"GSA","doi":"10.1130/0091-7613(1983)11<61:CAROMA>2.0.CO;2","usgsCitation":"Ketner, K.B., 1983, Comment and Reply on ‘Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada’: REPLY: Geology, v. 11, no. 1, p. 61-62, https://doi.org/10.1130/0091-7613(1983)11<61:CAROMA>2.0.CO;2.","productDescription":"2 p.","startPage":"61","endPage":"62","costCenters":[],"links":[{"id":373017,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ketner, Keith B.","contributorId":957,"corporation":false,"usgs":true,"family":"Ketner","given":"Keith","email":"","middleInitial":"B.","affiliations":[],"preferred":true,"id":784209,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011236,"text":"70011236 - 1983 - The Giles County, Virginia, seismic zone","interactions":[],"lastModifiedDate":"2025-12-10T19:50:37.434361","indexId":"70011236","displayToPublicDate":"1983-03-04T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"The Giles County, Virginia, seismic zone","docAbstract":"A well-defined seismic zone recently detected in Virginia has an orientation that is not related to the surrounding geologic structures. The orientation of the zone appears to be related to features below the Appalachian overthrust belt. A damaging earthquake that is important in evaluating seismic hazard in the southeastern United States may have occurred in the zone in 1897.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.219.4588.1063","issn":"00368075","usgsCitation":"Bollinger, G.A., and Wheeler, R.L., 1983, The Giles County, Virginia, seismic zone: Science, v. 219, no. 4588, p. 1063-1065, https://doi.org/10.1126/science.219.4588.1063.","productDescription":"3 p.","startPage":"1063","endPage":"1065","costCenters":[],"links":[{"id":221099,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia","county":"Giles County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-80.4761,37.4269],[-80.4506,37.3704],[-80.4417,37.3506],[-80.428,37.3194],[-80.4481,37.3088],[-80.4756,37.2905],[-80.4912,37.2822],[-80.5049,37.273],[-80.5147,37.2688],[-80.5302,37.2633],[-80.5551,37.2608],[-80.5787,37.2542],[-80.6075,37.2467],[-80.6219,37.2425],[-80.6724,37.2239],[-80.6828,37.2197],[-80.7051,37.209],[-80.7218,37.2039],[-80.7794,37.1888],[-80.804,37.1786],[-80.8286,37.1615],[-80.856,37.1476],[-80.8678,37.157],[-80.8824,37.1686],[-80.8624,37.1797],[-80.8725,37.1928],[-80.8947,37.1798],[-81.0099,37.2746],[-80.9785,37.294],[-80.9777,37.2934],[-80.9772,37.2932],[-80.9756,37.2931],[-80.9686,37.2927],[-80.9651,37.2932],[-80.9595,37.294],[-80.9566,37.2948],[-80.949,37.2971],[-80.9394,37.2999],[-80.9347,37.3015],[-80.9209,37.307],[-80.9111,37.3107],[-80.8985,37.3171],[-80.8916,37.3218],[-80.8859,37.3264],[-80.8813,37.33],[-80.8795,37.3312],[-80.8767,37.3332],[-80.8735,37.3352],[-80.8709,37.3368],[-80.8646,37.3401],[-80.8627,37.3411],[-80.859,37.3434],[-80.8544,37.3453],[-80.8516,37.3476],[-80.8504,37.3495],[-80.8532,37.3533],[-80.8705,37.371],[-80.8736,37.3737],[-80.8782,37.3777],[-80.8817,37.3817],[-80.8824,37.3848],[-80.8808,37.3889],[-80.8778,37.3926],[-80.8643,37.4096],[-80.8655,37.4132],[-80.8661,37.4159],[-80.8662,37.4184],[-80.8661,37.4189],[-80.8633,37.423],[-80.8627,37.4239],[-80.8575,37.4304],[-80.853,37.4278],[-80.8484,37.4256],[-80.8451,37.4257],[-80.842,37.4257],[-80.8367,37.4248],[-80.8321,37.4222],[-80.8244,37.4168],[-80.8157,37.4115],[-80.8097,37.4062],[-80.8051,37.4012],[-80.8021,37.3981],[-80.8004,37.3963],[-80.7986,37.3954],[-80.7968,37.395],[-80.7963,37.3948],[-80.7939,37.3946],[-80.7934,37.3945],[-80.7899,37.3945],[-80.7864,37.3936],[-80.7834,37.3923],[-80.7793,37.3878],[-80.7757,37.382],[-80.7709,37.3729],[-80.7629,37.3748],[-80.7531,37.3776],[-80.7507,37.3784],[-80.7423,37.3812],[-80.7307,37.3849],[-80.7248,37.3874],[-80.7198,37.3895],[-80.7052,37.3958],[-80.7048,37.396],[-80.684,37.4056],[-80.6696,37.4116],[-80.6518,37.4199],[-80.6363,37.4282],[-80.6276,37.4328],[-80.6219,37.4361],[-80.6176,37.4385],[-80.613,37.4404],[-80.6077,37.4427],[-80.6052,37.4439],[-80.603,37.445],[-80.5986,37.4473],[-80.5899,37.4523],[-80.5807,37.4583],[-80.5732,37.4628],[-80.5673,37.4661],[-80.5563,37.4707],[-80.55,37.4729],[-80.5407,37.4752],[-80.5309,37.4768],[-80.5182,37.4796],[-80.5156,37.48],[-80.5124,37.4806],[-80.5083,37.481],[-80.5054,37.4802],[-80.5026,37.4789],[-80.5002,37.4761],[-80.4984,37.473],[-80.4954,37.4666],[-80.4932,37.4596],[-80.4931,37.4528],[-80.4937,37.4487],[-80.4939,37.4467],[-80.4942,37.4446],[-80.4936,37.4419],[-80.4919,37.4396],[-80.4905,37.4379],[-80.4901,37.4374],[-80.4884,37.4356],[-80.486,37.4333],[-80.4831,37.4319],[-80.4802,37.4283],[-80.4761,37.4269]]]},\"properties\":{\"name\":\"Giles\",\"state\":\"VA\"}}]}","volume":"219","issue":"4588","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba758e4b08c986b3214f3","contributors":{"authors":[{"text":"Bollinger, G. A.","contributorId":55809,"corporation":false,"usgs":true,"family":"Bollinger","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":360634,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wheeler, R. L.","contributorId":34916,"corporation":false,"usgs":true,"family":"Wheeler","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":360633,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":5223598,"text":"5223598 - 1983 - Nutritional value of the aril of Trichilia cuneata, a bird-dispersed fruit","interactions":[],"lastModifiedDate":"2023-08-29T15:56:01.487883","indexId":"5223598","displayToPublicDate":"1983-03-01T12:19:34","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1045,"text":"Biotropica","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Nutritional value of the aril of Trichilia cuneata, a bird-dispersed fruit","title":"Nutritional value of the aril of Trichilia cuneata, a bird-dispersed fruit","docAbstract":"Organochlorine pesticide residues were determined in 168 shorebirds of three species collected at approximate bimonthly intervals during the fall and winter months of 1979–80 near Port Mansfield on the south Texas coast. The study was conducted to determine if shorebirds wintering on mudflats at the outlets of agricultural drains in Texas accumulated pesticides during this period. The predominant Organochlorine residues detected in shorebirds were DDE, dieldrin, and toxaphene. Ninety-five % of the skinned carcasses analyzed contained detectable levels of DDE, 13% contained dieldrin, and 22% contained toxaphene. DDE significantly increased in all species of shorebirds from October to December, with potentially dangerous levels accumulating in some long-billed dowitchers (Limnodromus scolopaceus) and American avocets (Recurvirostra americana), but DDE residues seldom exceeded 0.5 ppm in carcasses of western sandpipers (Calidris mauri). After about two months on the study area, no further residue increases were documented. The high levels of DDE detected in a large proportion of the dowitchers, and to a lesser extent in the avocets, are near or within the range known to inhibit reproduction in some avian species. This study demonstrates that certain aquatic areas near agricultural lands on the south Texas coast may be potential threats to waterbirds eight years after the use of DDT was banned in the United States.
","language":"English","publisher":"Springer","doi":"10.1007/BF01059587","usgsCitation":"White, D.H., Mitchell, C.A., and Kaiser, T.E., 1983, Temporal accumulation of organochlorine pesticides in shorebirds wintering on the south Texas coast, 1979-80: Archives of Environmental Contamination and Toxicology, v. 12, no. 2, p. 241-245, https://doi.org/10.1007/BF01059587.","productDescription":"5 p.","startPage":"241","endPage":"245","numberOfPages":"5","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":197767,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -97.49160157419985,\n 26.576048278948377\n ],\n [\n -97.49160157419985,\n 26.277932257567784\n ],\n [\n -97.19624831300968,\n 26.277932257567784\n ],\n [\n -97.19624831300968,\n 26.576048278948377\n ],\n [\n -97.49160157419985,\n 26.576048278948377\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"12","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4adae4b07f02db685603","contributors":{"authors":[{"text":"White, Donald H.","contributorId":21728,"corporation":false,"usgs":true,"family":"White","given":"Donald","email":"","middleInitial":"H.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":335427,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitchell, Christine A.","contributorId":35849,"corporation":false,"usgs":true,"family":"Mitchell","given":"Christine","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":335425,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kaiser, T. Earl","contributorId":84826,"corporation":false,"usgs":true,"family":"Kaiser","given":"T.","email":"","middleInitial":"Earl","affiliations":[],"preferred":false,"id":335426,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5221837,"text":"5221837 - 1983 - Breeding success of barn owls (Tyto alba) fed low levels of DDE and dieldrin","interactions":[],"lastModifiedDate":"2023-12-12T17:06:03.812459","indexId":"5221837","displayToPublicDate":"1983-03-01T12:18:58","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Breeding success of barn owls (Tyto alba) fed low levels of DDE and dieldrin","title":"Breeding success of barn owls (Tyto alba) fed low levels of DDE and dieldrin","docAbstract":"The relative importance of two organochlorine pesticides in the recent reproductive failure of raptors was investigated. Captive barn owls were fed 3.0 ppm DDE and 0.5 ppm dieldrin; doses were given separately and in combination for two years. Breeding success was followed from the laying of eggs through natural incubation and rearing of young. DDE was associated with significant eggshell thinning, egg breakage, embryo mortality, and reduced production per pair. Dieldrin alone was associated with slight but significant eggshell thinning, but not with reduction of breeding success. Ecological implications of the results are discussed; it is suggested that DDE had a much more severe effect on reproduction in wild raptors than dieldrin, which contributed to their decline primarily through adult mortality.
","language":"English","publisher":"Springer","doi":"10.1007/BF01059586","usgsCitation":"Mendenhall, V.M., Klaas, E.E., and McLane, M.A., 1983, Breeding success of barn owls (Tyto alba) fed low levels of DDE and dieldrin: Archives of Environmental Contamination and Toxicology, v. 12, no. 2, p. 235-240, https://doi.org/10.1007/BF01059586.","productDescription":"6 p.","startPage":"235","endPage":"240","numberOfPages":"6","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":196920,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a02e4b07f02db5f805e","contributors":{"authors":[{"text":"Mendenhall, Vivian M.","contributorId":98405,"corporation":false,"usgs":true,"family":"Mendenhall","given":"Vivian","email":"","middleInitial":"M.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":334798,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaas, Erwin E.","contributorId":101219,"corporation":false,"usgs":true,"family":"Klaas","given":"Erwin","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":334797,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McLane, M. Anne Ross","contributorId":107799,"corporation":false,"usgs":true,"family":"McLane","given":"M.","email":"","middleInitial":"Anne Ross","affiliations":[],"preferred":false,"id":334799,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70120412,"text":"70120412 - 1983 - Platte River Forum for the Future: workshop model documentation","interactions":[],"lastModifiedDate":"2014-08-14T11:13:29","indexId":"70120412","displayToPublicDate":"1983-03-01T11:12:11","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Platte River Forum for the Future: workshop model documentation","docAbstract":"The Platte River Forum for the Future (PRFF) is an effort by the Nebraska Natural Resources Commission (NNRC) to bring together representatives of interests and agencies concerned with management of the Platte River and, assisted by various computer technologies, to reach some degree of agreement on the “best uses” of the remaining waters of the Platte. Simulation modeling is being used in this effort as a focal point for developing a common understanding of the behavior of the Platte River system, synthesizing existing information, identifying additional needed information, and analyzing the potential consequences of various management alternatives.
\nThe NNRC initiated the project in August 1982 by convening a workshop for interested parties in Grand Island, Nebraska. This workshop was devoted to construction of a preliminary simulation model describing the Platte River system. A group of facilitators/modelers from the U.S. Fish and Wildlife Service (FWS) assisted participants in translating their understanding of the Platte River into the framework of the model. In October 1982, FWS personnel began a process of training several people from Nebraska in the use of the model. At that time, minor revisions and corrections were made in the model and various development scenarios were prepared for discussion with participants at a second workshop, which was held in early November 1982.
\nThe purpose of this report is to document the status of the PRFF simulation model as of the end of the November 1982 meeting. We emphasize that the intent is not to describe a final product. Except for minor revisions and correction of obvious errors, the model described herein is that which existed at the end of the August workshop. The model contains the foundation for a comprehensive aid to decisionmakers, but at this time it is preliminary in nature, needing refinement and verification before it can be truly useful in analyzing management alternatives. The purpose of this report is to provide a solid foundation for that important future work.
\nThe report is divided into three basic parts. The first is a brief overview of the various components of the model and how they fit together. It is intended for those who are not particularly interested in the details of model formulation. The second is a detailed discussion of the logic, assumptions, equations, and data used in constructing the model. This detailed description is also referenced to specific sections of the third part, which is a set of appendices containing listings of the computer code as it presently exists.
","language":"English","publisher":"U.S. Fish and Wildlife Service, Western Energy and Land Use Team","publisherLocation":"Fort Collins, CO","usgsCitation":"U.S. Fish and Wildlife Service, Western Energy and Land Use Team, 1983, Platte River Forum for the Future: workshop model documentation, 251 p.","productDescription":"251 p.","numberOfPages":"251","costCenters":[],"links":[{"id":292184,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nebraska","otherGeospatial":"Platte River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -100.6762,40.6541 ], [ -100.6762,41.4623 ], [ -95.8807,41.4623 ], [ -95.8807,40.6541 ], [ -100.6762,40.6541 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53edcd4ee4b0f61b386d243d"} ,{"id":70120405,"text":"70120405 - 1983 - Evaluating environmental and economic consequences of alternative pest management strategies: results of modeling workshops","interactions":[],"lastModifiedDate":"2014-08-14T10:47:29","indexId":"70120405","displayToPublicDate":"1983-03-01T10:32:03","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Evaluating environmental and economic consequences of alternative pest management strategies: results of modeling workshops","docAbstract":"The U.S. Environmental Protection Agency (EPA) needs a comprehensive method to evaluate the human health and environmental effects of alternative agricultural pest management strategies. This project explored the utility of Adaptive Environmental Assessment (AEA) techniques for meeting this need. The project objectives were to produce models for environmental impact analysis, improve communications, identify research needs and data requirements, and demonstrate a process for resolving conflicts. The project was structured around the construction (in an initial 2 1/2-day workshop) and examination (in a second 2 1/2-day workshop) of a simulation model of a corn agroecosystem.
\nWhile the model developed in the project is not yet accurate enough to be used for real-world decisions about the use of pesticides on corn, it does contain the basic structure upon which such a model could be built. More importantly at this stage of development, the project has shown that very complex systems can be modeled in short periods of time and that the process of building such models increases understanding among disciplinary specialists and between diverse institutional interests. This process can be useful to EPA as the agency cooperates with other institutions to meet its responsibilities in less costly ways.
\nActivities at the second 2 1/2-day workshop included a review of the model, incorporation of necessary corrections, simulation of policy scenarios, and examination of techniques to address remaining institutional conflicts. Participants were divided into three groups representing environmental, production or industry, and regulatory interests. Each group developed scenarios that would be most appealing to their particular interest and the scenarios were simulated by the agroecosystem computer model. Negotiators from each of the interest groups decided whether a hypothetical herbicide should be relabeled and if certain restrictions should be imposed on its use. Other participants functioned as experts and consultants on caucus teams. A solution to the hypothetical problem was successfully negotiated.
\nWorkshop participants and project staff agreed that the model and processes developed during the project should be used in training students, extension specialists, farmers, researchers, and chemical producers in collaborative problem solving methods. More productive research can be planned, and more realistic models of complex systems can be built in this way. More importantly, greater trust of decisionmakers in computer models, better understanding by technical experts about disciplines other than their own, and improved cooperation between institutional interests can be achieved. This trust, understanding, and cooperation are critical ingredients in solving problems that are too complex to be resolved by independent disciplinary activity and unilateral decision authority.
","language":"English","publisher":"U.S. Fish and Wildlife Service, Western Energy and Land Use Team","publisherLocation":"Fort Collins, CO","usgsCitation":"Johnson, R.L., Andrews, A.K., Auble, G.T., Ellison, R.A., Hamilton, D.B., Roelle, J.E., and McNamee, P.J., 1983, Evaluating environmental and economic consequences of alternative pest management strategies: results of modeling workshops, 38 p.","productDescription":"38 p.","numberOfPages":"38","costCenters":[],"links":[{"id":292177,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53edcd4ae4b0f61b386d23e5","contributors":{"authors":[{"text":"Johnson, Richard L.","contributorId":32626,"corporation":false,"usgs":true,"family":"Johnson","given":"Richard","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":498160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Andrews, Austin K.","contributorId":85516,"corporation":false,"usgs":true,"family":"Andrews","given":"Austin","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":498162,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Auble, Gregor T.L.","contributorId":43681,"corporation":false,"usgs":true,"family":"Auble","given":"Gregor","email":"","middleInitial":"T.L.","affiliations":[],"preferred":false,"id":498161,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ellison, Richard A.","contributorId":19087,"corporation":false,"usgs":true,"family":"Ellison","given":"Richard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":498159,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hamilton, David B. hamiltond@usgs.gov","contributorId":193,"corporation":false,"usgs":true,"family":"Hamilton","given":"David","email":"hamiltond@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":498156,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Roelle, James E. roelleb@usgs.gov","contributorId":2330,"corporation":false,"usgs":true,"family":"Roelle","given":"James","email":"roelleb@usgs.gov","middleInitial":"E.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":498157,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"McNamee, Peter J.","contributorId":16760,"corporation":false,"usgs":true,"family":"McNamee","given":"Peter","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":498158,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70011276,"text":"70011276 - 1983 - Groundwater observation network design for the Kansas groundwater management districts, U.S.A.","interactions":[],"lastModifiedDate":"2025-04-11T16:18:41.907517","indexId":"70011276","displayToPublicDate":"1983-03-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater observation network design for the Kansas groundwater management districts, U.S.A.","docAbstract":"Concerns about the efficiency and economic soundness of the Kansas groundwater monitoring program led to a systematic redesign of this network, a tentative phase of which is presented in this study. The objectives of this paper include monitoring of major aquifers within each groundwater management district at a spatially more uniform level of accuracy, elimination of redundant measurements and optimization of the information gained from each observation well. The theory of regionalized variables is employed to estimate the amount of spatial variability of the water table, on which the network design is based. This study shows that it is not practical to attempt to reduce the already existing level of uncertainty uniformly throughout the various districts; to do so would tremendously increase the cost of well monitoring, which is already very high. Assuming that the currently existing network is satisfactory for the State's objectives, a reduced network consisting of one well every 6.4 km is equally satisfactory. The reduced network yields district-wide maps that do not differ significantly from those produced using the present network and at the same time it reduces the already-existing network by 18–47%. Therefore, adoption of a rearranged square well network is recommended, which is reduced to a 6.4-km spacing to achieve both a uniform level of information about the water table and a minimum required accuracy.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(83)90002-1","issn":"00221694","usgsCitation":"Sophocleous, M., 1983, Groundwater observation network design for the Kansas groundwater management districts, U.S.A.: Journal of Hydrology, v. 61, no. 4, p. 371-389, https://doi.org/10.1016/0022-1694(83)90002-1.","productDescription":"19 p.","startPage":"371","endPage":"389","costCenters":[],"links":[{"id":220969,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"61","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2dade4b0c8380cd5bfa3","contributors":{"authors":[{"text":"Sophocleous, M.","contributorId":13373,"corporation":false,"usgs":true,"family":"Sophocleous","given":"M.","email":"","affiliations":[],"preferred":false,"id":360730,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1003096,"text":"1003096 - 1983 - Distribution of larval fishes related to potential navigation impacts on the upper Mississippi River, pool 7","interactions":[],"lastModifiedDate":"2026-04-10T16:38:13.156073","indexId":"1003096","displayToPublicDate":"1983-03-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Distribution of larval fishes related to potential navigation impacts on the upper Mississippi River, pool 7","docAbstract":"Ichthyoplankton samples were collected twice monthly during spring and summer 1981 from a variety of habitats in Navigation Pool 7 of the upper Mississippi River. Larval‐fish distributions in the pool and variations in those distributions were analyzed relative to potential impacts of increased commercial navigation. Although as many as 66 species of adults have been found in the area (33 considered common), only 17 taxa were identified from our collections. In April and May, most larvae were collected in main‐channel and main‐channel‐border areas next to major expanses of shallow backwaters. White bass Morone chrysops, yellow perch Perca flavescens, and crappies Pomoxis spp. were predominant. Numerous catostomids also were taken. In June and July, most larvae were taken in the lower pool. Freshwater drum Aplodinotus grunniens and gizzard shad Dorosoma cepedianum predominated in these samples, which also included many cyprinids and centrarchids. Diel patterns of abundance varied with species and sampling location. Freshwater drums were more abundant near the surface at midnight than during the day. Common carp Cyprinus carpio were most abundant in collections at dusk, whereas all other cyprinids were most abundant at dusk and dawn. Numbers of gizzard shad also increased slightly at dusk. Total numbers of larvae collected were greatest at dusk in main‐channel and main‐channel‐border samples; backwater areas produced the greatest catches at midnight and dawn. Seasonal, spatial, diel, and species‐specific variations in larval fish abundances significantly influenced the proportion of the community potentially vulnerable to increased boat traffic through Pool 7.
","language":"English","publisher":"American Fisheries Society","doi":"10.1577/1548-8659(1983)112<293:DOLFRT>2.0.CO;2","usgsCitation":"Holland, L.E., and Sylvester, J., 1983, Distribution of larval fishes related to potential navigation impacts on the upper Mississippi River, pool 7: Transactions of the American Fisheries Society, v. 112, no. 2b, p. 293-301, https://doi.org/10.1577/1548-8659(1983)112<293:DOLFRT>2.0.CO;2.","productDescription":"9 p.","startPage":"293","endPage":"301","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":134490,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"upper Mississippi River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -92.92004535993226,\n 44.99687380497292\n ],\n [\n -90.79146526297228,\n 41.82007926884964\n ],\n [\n -91.57946666962061,\n 40.74634299625933\n ],\n [\n -91.5819487416074,\n 39.73860346909468\n ],\n [\n -89.4247105077819,\n 36.43482663374351\n ],\n [\n -89.02477297503157,\n 36.69940171446078\n ],\n [\n -90.72503627561406,\n 40.08698553320538\n ],\n [\n -90.70014192661544,\n 40.61261371918002\n ],\n [\n -89.78323289588835,\n 42.06896573901448\n ],\n [\n -91.84460959802443,\n 45.05608914566284\n ],\n [\n -92.92004535993226,\n 44.99687380497292\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"112","issue":"2b","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6fe4b07f02db640cbc","contributors":{"authors":[{"text":"Holland, L. E.","contributorId":104853,"corporation":false,"usgs":true,"family":"Holland","given":"L.","middleInitial":"E.","affiliations":[],"preferred":false,"id":312747,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sylvester, J.R.","contributorId":95857,"corporation":false,"usgs":true,"family":"Sylvester","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":312746,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70208678,"text":"70208678 - 1983 - Upper Cenozoic silicoflagellates from offshore Ecuador, Deep Sea Drilling Project Site 504","interactions":[],"lastModifiedDate":"2020-02-24T14:15:18","indexId":"70208678","displayToPublicDate":"1983-02-24T14:06:18","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"title":"Upper Cenozoic silicoflagellates from offshore Ecuador, Deep Sea Drilling Project Site 504","docAbstract":"Diverse and abundant late Miocene to Pleistocene silicoflagellates at DSDP Site 504 can be correlated by tropical biostratigraphic zones and relative paleotemperature values to eastern tropical Pacific reference site DSDP 503A farther to the west. Early Pliocene assemblages, which were poorly known until now, are present and can be correlated locally between DSDP Holes 504, 503A, and 495, using species events associated with the new Dictyocha pulchella Subzone and Dictyocha angulata Subzone. Silicoflagellate relative paleotemperature values show major warming at 4.7 to 5.0 Ma (Cores 45-48), 3.4 to 3.8 Ma (Cores 32-33), 1.5 to 1.7 Ma (Cores 12-16), and 0.5 to 0.8 Ma (Cores 3-6). Major coolings occurred at 5.0 to 5.1 Ma (Core 51), 3.9 to 4.4 Ma (Cores 38-44), and 1.0 to 1.3 Ma (Cores 8-10). The appearance of Dictyocha longa is proposed to replace the asperoid/fibuloid ratio reversal as the bottom of the Dictyocha fibula Zone, because the non-evolutionary ratio reverses several times in the upper Miocene of Hole 5O3A, and at least once in Hole 504. Three new Pliocene silicoflagellates are defined: Dictyocha concinna Bukry, n. sp., D. helix Bukry, n. sp., and D. tamarae Bukry, n. sp.
","language":"English","publisher":"Texas A&M","doi":"10.2973/dsdp.proc.69.113.1983","usgsCitation":"Bukry, D., 1983, Upper Cenozoic silicoflagellates from offshore Ecuador, Deep Sea Drilling Project Site 504: Initial Reports of the D.S.D.P., v. 69, p. 321-342, https://doi.org/10.2973/dsdp.proc.69.113.1983.","productDescription":"22 p.","startPage":"321","endPage":"342","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":488898,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/dsdp.proc.69.113.1983","text":"Publisher Index Page"},{"id":372573,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"69","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bukry, David 0000-0003-4540-890X dbukry@usgs.gov","orcid":"https://orcid.org/0000-0003-4540-890X","contributorId":3550,"corporation":false,"usgs":true,"family":"Bukry","given":"David","email":"dbukry@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":782973,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208371,"text":"70208371 - 1983 - Molecular and isotopic compositions of hydrocarbons at Site 533, Deep Sea Drilling Project Leg 76","interactions":[],"lastModifiedDate":"2020-02-05T13:48:16","indexId":"70208371","displayToPublicDate":"1983-02-05T13:41:16","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"title":"Molecular and isotopic compositions of hydrocarbons at Site 533, Deep Sea Drilling Project Leg 76","docAbstract":"In an investigation of gas hydrates in deep ocean sediments, gas samples from Deep Sea Drilling Project Site 533 on the Blake Outer Ridge in the northwest Atlantic were obtained for molecular and isotopic analyses. Gas samples were collected from the first successful deployment of a pressure core barrel (PCB) in a hydrate region. The pressure decline curves from two of the four PCB retrievals at in situ pressures suggested the presence of small amounts of gas hydrates. Compositional and isotopic measurements of gases from several points along the pressure decline curve indicated that (1) biogenic methane (δ13C = -68‰; CJ/CJ = 5000) was the dominant gas (>90%); (2) little fractionation in the C,/ C2 ratio or the C carbon isotopic composition occurred as gas hydrates decomposed during pressure decline experi ments; (3) the percent of C3 , i-C4 , and CO2 degassed increased as the pressure declined, indicating that these molecules may help stabilize the hydrate structure; (4) excess nitrogen was present during initial degassing; and (5) Cj/Q ratios and isotopic ratios of C gases were similar to those obtained from conventional core sampling. The PCB gas also con tained trace amounts of saturated, acyclic, cyclic, and aromatic C5 -C14 hydrocarbons, as well as alkenes and tetrahydrothiophenes. Gas from a decomposed specimen of gas hydrate had similar molecular and isotopic ratios to the PCB gas (δ13C of -68% for methane and a q/ Q ratio of -6000). Regular trends in the δ 13C of methane ( 95 60%) and C{ /C2 ratios (-25000 — 2000) were observed with depth. Capillary gas chromatography (GC) and total scanning fluorescence measurements of extracted organic material were characteristic of hydrocarbons dominated by a marine source, though significant amounts of perylene were also present.
","language":"English","publisher":"Texas A&M","doi":"10.2973/dsdp.proc.76.108.1983","usgsCitation":"Brooks, J., Barnard, L., Wiesenburg, D., Kennicutt, M., and Kvenvolden, K.A., 1983, Molecular and isotopic compositions of hydrocarbons at Site 533, Deep Sea Drilling Project Leg 76: Initial Reports of the D.S.D.P., v. 76, p. 377-389, https://doi.org/10.2973/dsdp.proc.76.108.1983.","productDescription":"13 p.","startPage":"377","endPage":"389","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":488896,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/dsdp.proc.76.108.1983","text":"Publisher Index Page"},{"id":372077,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Brooks, J.M.","contributorId":76469,"corporation":false,"usgs":true,"family":"Brooks","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":781638,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barnard, L.A.","contributorId":190882,"corporation":false,"usgs":false,"family":"Barnard","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":781639,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wiesenburg, D.A.","contributorId":222245,"corporation":false,"usgs":false,"family":"Wiesenburg","given":"D.A.","email":"","affiliations":[{"id":34980,"text":"Department of Oceanography, Texas A&M University","active":true,"usgs":false}],"preferred":false,"id":781640,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kennicutt, M.C. II","contributorId":67665,"corporation":false,"usgs":true,"family":"Kennicutt","given":"M.C.","suffix":"II","affiliations":[],"preferred":false,"id":781641,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":781642,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70208370,"text":"70208370 - 1983 - Pressure core barrel; application to the study of gas hydrates, Deep Sea Drilling Project Site 533, Leg 76","interactions":[],"lastModifiedDate":"2020-02-05T13:31:31","indexId":"70208370","displayToPublicDate":"1983-02-05T13:17:53","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"title":"Pressure core barrel; application to the study of gas hydrates, Deep Sea Drilling Project Site 533, Leg 76","docAbstract":"A pressure core barrel (PCB), developed by the Deep Sea Drilling Project, was used successfully to recover, at in situ pressure, sediments of the Blake Outer Ridge, offshore the southeastern United States. The PCB is a unique, wire-line tool, 10.4 m long, capable of recovering 5.8 m of core (5.8 cm in diameter), maintained at or below in situ pressures of 34.4 million Pascals (MPa), and 1.8 m of unpressurized core (5.8 cm in diameter). All excess internal pressure above the operating pressure of 34.4 MPa is automatically vented off as the barrel is retrieved. The PCB was deployed five times at DSDP Site 533 where geophysical evidence suggests the presence of gas hydrates in the upper 600 m of sediment. Three cores were obtained holding average in situ pressures of 30 MPa. Two other cores did not maintain in situ pressures. Three of the five cores were intermittently degassed at varying intervals of time, and portions of the vented gas were collected for analysis. Pressure decline followed paths indicative of gas hydrates and/or dissolved gas. The released gas was dominantly methane (usually greater than 90%), along with higher molecular-weight hydrocarbon gases and carbon dioxide. During degassing the ratio of methane to ethane did not vary significantly. On the other hand, concentrations of higher molecular-weight hydrocarbon gases increased, as did carbon dioxide concentrations. The results from the PCB experiments provide tentative but equivocal evidence for the presence of .gas hydrates at Site 533. The amount of gas hydrate indicated is small. Nevertheless, this work represents the first successful study of marine gas hydrates utilizing the PCB.
","language":"English","publisher":"Texas A&M","doi":"10.2973/dsdp.proc.76.107.1983","usgsCitation":"Kvenvolden, K.A., and Cameron, D., 1983, Pressure core barrel; application to the study of gas hydrates, Deep Sea Drilling Project Site 533, Leg 76: Initial Reports of the D.S.D.P., v. 76, p. 367-375, https://doi.org/10.2973/dsdp.proc.76.107.1983.","productDescription":"9 p.","startPage":"367","endPage":"375","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":488885,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/dsdp.proc.76.107.1983","text":"Publisher Index Page"},{"id":372076,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":781634,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cameron, D.","contributorId":95018,"corporation":false,"usgs":true,"family":"Cameron","given":"D.","affiliations":[],"preferred":false,"id":781635,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70208368,"text":"70208368 - 1983 - Methane and other hydrocarbon gases in marine sediment","interactions":[],"lastModifiedDate":"2020-02-06T06:48:21","indexId":"70208368","displayToPublicDate":"1983-02-05T13:05:06","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":806,"text":"Annual Review of Earth and Planetary Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Methane and other hydrocarbon gases in marine sediment","docAbstract":"No abstract available.
","language":"English","publisher":"Annual Reviews","doi":"10.1146/annurev.ea.11.050183.001503","usgsCitation":"Claypool, G., and Kvenvolden, K.A., 1983, Methane and other hydrocarbon gases in marine sediment: Annual Review of Earth and Planetary Sciences, v. 11, p. 299-327, https://doi.org/10.1146/annurev.ea.11.050183.001503.","productDescription":"29 p.","startPage":"299","endPage":"327","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":372075,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Claypool, George E.","contributorId":8475,"corporation":false,"usgs":true,"family":"Claypool","given":"George E.","affiliations":[],"preferred":false,"id":781618,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":781619,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70208367,"text":"70208367 - 1983 - Concentrations and carbon isotopic compositions of CH4 and CO2 in gas from sediments of the Blake Outer Ridge, Deep Sea Drilling Project Leg 76","interactions":[],"lastModifiedDate":"2020-02-06T06:49:01","indexId":"70208367","displayToPublicDate":"1983-02-05T12:54:01","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Concentrations and carbon isotopic compositions of CH4 and CO2 in gas from sediments of the Blake Outer Ridge, Deep Sea Drilling Project Leg 76","title":"Concentrations and carbon isotopic compositions of CH4 and CO2 in gas from sediments of the Blake Outer Ridge, Deep Sea Drilling Project Leg 76","docAbstract":"The principal gaseous carbon-containing components identified in the first 400 m of sediment at Deep Sea Drilling Project Site 533, Leg 76, are methane (CH4 ) and carbon dioxide (CO2 ). Below a sub-bottom depth of about 25 m, sedi ment cores commonly contained pockets caused by the expansion of gas upon core recovery. The carbon isotopic com position (δ13C %0 relative to PDB standard) of CH4 and CO2 in these gas pockets has been measured, resulting in the following observations: (1) δ 1 3CC H 4 values increase with depth from approximately -94% in the uppermost sediment to about -66% in the deepest sediment, reflecting a systematic but nonlinear depletion of 12C with depth. (2) δ 1 3Cc θ 2 values also increase with depth of sediment from about - 25% to about - 4%, snowing a depletion of 12C that closely parallels the trend of the isotopic composition of CH4 . The magnitude and parallel distribution of δ 13C values for both CH4 and CO2 are consistent with the concept that the formation of the CH4 resulted from the microbiological reduction of CO2 from organic substances. These results imply that CH4 and CO2 incorporated in gas hydrates at this site are biogenic.
The karstic Edwards Limestone within the Balcones Fault Zone of south-central Texas forms a productive confined aquifer that consists predominately of dense carbonate rocks and contains several layers of highly permeable and porous honeycombed rocks that have been produced by the leaching of evaporitic, tidal flat or reefal deposits. Fractures have hydraulically interconnected these layers at some places. Faults, however, commonly place rocks of very high-permeability opposite rocks of very low permeability, thus creating a lateral discontinuity and a flow barrier. At places, fault barriers probably cause partial to almost complete blockage of groundwater flow normal to the fault.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(83)90239-1","issn":"00221694","usgsCitation":"Maclay, R., and Small, T.A., 1983, Hydrostratigraphic subdivisions and fault barriers of the Edwards aquifer, south-central Texas, U.S.A.: Journal of Hydrology, v. 61, no. 1-3, p. 127-146, https://doi.org/10.1016/0022-1694(83)90239-1.","productDescription":"20 p.","startPage":"127","endPage":"146","costCenters":[],"links":[{"id":221379,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","otherGeospatial":"south-central Texas","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -102.86685054584636,\n 31.871003782226552\n ],\n [\n -102.86685054584636,\n 29.566869570350406\n ],\n [\n -97.93837372022465,\n 29.566869570350406\n ],\n [\n -97.93837372022465,\n 31.871003782226552\n ],\n [\n -102.86685054584636,\n 31.871003782226552\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"61","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a378ee4b0c8380cd60f87","contributors":{"authors":[{"text":"Maclay, R.W.","contributorId":72804,"corporation":false,"usgs":true,"family":"Maclay","given":"R.W.","affiliations":[],"preferred":false,"id":361612,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Small, T. A.","contributorId":105731,"corporation":false,"usgs":true,"family":"Small","given":"T.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":361613,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011598,"text":"70011598 - 1983 - A system for measuring bottom profile, waves and currents in the high-energy nearshore environment","interactions":[],"lastModifiedDate":"2024-10-16T16:37:20.035726","indexId":"70011598","displayToPublicDate":"1983-02-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"A system for measuring bottom profile, waves and currents in the high-energy nearshore environment","docAbstract":"A new data-acquisition system capable of measuring waves, currents and the nearshore profile in breaking waves as high as 5 m has been developed and successfully field-tested. Components of the mechanical system are a sled carrying a vertical mast, a double-drum winch placed landward of the beach, and a line that runs from one drum of the winch around three blocks, which are the corners of a right triangle, to the other drum of the winch. The sled is attached to the shore-normal side of the triangular line arrangement and is pulled offshore by one drum of the winch and onshore by the other. The profile is measured as the sled is towed along the shore-normal transect using an infrared rangefinder mounted landward of the winch and optical prisms mounted on top of the sled's mast. A pressure sensor and two-axis electromagnetic current meter are mounted on the frame of the sled. These data are encoded on the sled and telemetered to a receiving/recording station onshore. Preliminary results suggest that near-bottom offshore-flowing currents during periods of high-energy swell are important in forcing changes to the configuration of the nearshore profile.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(83)90089-0","usgsCitation":"Sallenger, A., Howard, P., Fletcher, C., and Howd, P., 1983, A system for measuring bottom profile, waves and currents in the high-energy nearshore environment: Marine Geology, v. 51, no. 1-2, p. 63-76, https://doi.org/10.1016/0025-3227(83)90089-0.","productDescription":"14 p.","startPage":"63","endPage":"76","costCenters":[],"links":[{"id":221765,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e5e7e4b0c8380cd47010","contributors":{"authors":[{"text":"Sallenger, Asbury H. Jr.","contributorId":27458,"corporation":false,"usgs":true,"family":"Sallenger","given":"Asbury H.","suffix":"Jr.","affiliations":[],"preferred":false,"id":361511,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Howard, P.C.","contributorId":8994,"corporation":false,"usgs":true,"family":"Howard","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":361512,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fletcher, C.H. III","contributorId":85721,"corporation":false,"usgs":true,"family":"Fletcher","given":"C.H.","suffix":"III","email":"","affiliations":[],"preferred":false,"id":361513,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Howd, P.A.","contributorId":103793,"corporation":false,"usgs":true,"family":"Howd","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":361514,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011599,"text":"70011599 - 1983 - Relation of concealed faults to water quality and the formation of solution features in the Floridan aquifer, northeastern Florida, U.S.A.","interactions":[],"lastModifiedDate":"2025-04-11T16:36:07.500302","indexId":"70011599","displayToPublicDate":"1983-02-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Relation of concealed faults to water quality and the formation of solution features in the Floridan aquifer, northeastern Florida, U.S.A.","docAbstract":"Geological and hydrological information on the Floridan aquifer in northeastern Florida indicates that isolated occurrences of water having relatively high chloride concentration in the upper part of the aquifer may be associated with buried faults. Water having chloride concentrations of more than 700 mg l−1 occurs in the deeper zone of the aquifer at depths below ∼ 600 m below sea level in the coastal and east-central part of the study area. This deep salty water is under higher artesian pressure than water in the shallower, generally freshwater zones, but it is restricted from moving upward by relatively impermeable dolomite beds. Two buried faults with vertical displacements of 30–45 m are in areas where relatively high concentrations of chloride have been detected in water in the upper part of the aquifer. Geochemical, artesian pressure, and water temperature data show that the source of the relatively high concentrations of chloride in water in the upper part of the aquifer is from the deeper zone. This indicates that the faults may have breached the dolomite confining beds and allowed the upward movement of salty water from the deeper zone.
The upward movement of mineralized water along the faults may also have formed some of the solution features found in the aquifer near the faults. In this area, freshwater in the upper part of the aquifer is normally saturated with respect to calcite and dolomite. However, water from wells tapping the upper part of the aquifer near the faults is not fully saturated suggesting that the mixing of deep mineralized water with shallower freshwater produces a mixture that is not saturated with respect to these minerals and allows for the dissolution of limestone in the aquifer near the faults. Dissolution of limestone may also be occurring at the freshwater-saltwater interface in the deeper zones of the aquifer.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(83)90252-4","issn":"00221694","usgsCitation":"Leve, G., 1983, Relation of concealed faults to water quality and the formation of solution features in the Floridan aquifer, northeastern Florida, U.S.A.: Journal of Hydrology, v. 61, no. 1-3, p. 251-264, https://doi.org/10.1016/0022-1694(83)90252-4.","productDescription":"13 p.","startPage":"251","endPage":"264","costCenters":[],"links":[{"id":221766,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"northeastern Florida","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -82.49895094186574,\n 30.906206797439737\n ],\n [\n -82.49895094186574,\n 29.80296540535703\n ],\n [\n -81.27672743461723,\n 29.80296540535703\n ],\n [\n -81.27672743461723,\n 30.906206797439737\n ],\n [\n -82.49895094186574,\n 30.906206797439737\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"61","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a67ee4b0e8fec6cdc1c2","contributors":{"authors":[{"text":"Leve, G.W.","contributorId":64294,"corporation":false,"usgs":true,"family":"Leve","given":"G.W.","affiliations":[],"preferred":false,"id":361515,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70010341,"text":"70010341 - 1983 - Pressure solution and hydrothermal recrystallization of carbonate sediments — an experimental study — reply","interactions":[],"lastModifiedDate":"2024-10-16T16:17:05.17571","indexId":"70010341","displayToPublicDate":"1983-02-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Pressure solution and hydrothermal recrystallization of carbonate sediments — an experimental study — reply","docAbstract":"No abstract available.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(83)90097-X","usgsCitation":"Baker, P., Kastner, M., Byerlee, J., and Lockner, D., 1983, Pressure solution and hydrothermal recrystallization of carbonate sediments — an experimental study — reply: Marine Geology, v. 51, no. 1-2, p. 179-181, https://doi.org/10.1016/0025-3227(83)90097-X.","productDescription":"3 p.","startPage":"179","endPage":"181","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":218940,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8b5de4b0c8380cd7e21f","contributors":{"authors":[{"text":"Baker, P.A.","contributorId":55148,"corporation":false,"usgs":true,"family":"Baker","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":358674,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kastner, M.","contributorId":21276,"corporation":false,"usgs":true,"family":"Kastner","given":"M.","email":"","affiliations":[],"preferred":false,"id":358673,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Byerlee, J.D.","contributorId":69982,"corporation":false,"usgs":true,"family":"Byerlee","given":"J.D.","affiliations":[],"preferred":false,"id":358675,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lockner, D.A. 0000-0001-8630-6833","orcid":"https://orcid.org/0000-0001-8630-6833","contributorId":85603,"corporation":false,"usgs":true,"family":"Lockner","given":"D.A.","affiliations":[],"preferred":false,"id":358676,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70208232,"text":"70208232 - 1983 - Late Wisconsin mountain glaciation in the western United States","interactions":[],"lastModifiedDate":"2020-02-03T06:51:17","indexId":"70208232","displayToPublicDate":"1983-01-31T10:57:25","publicationYear":"1983","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Late Wisconsin mountain glaciation in the western United States","docAbstract":"No abstract available.
","language":"English","publisher":"Longman","usgsCitation":"Porter, S., Pierce, K.L., and Hamilton, T.D., 1983, Late Wisconsin mountain glaciation in the western United States, v. 1, p. 71-111.","productDescription":"41 p.","startPage":"71","endPage":"111","costCenters":[],"links":[{"id":371809,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":" Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington, Wyomng,","otherGeospatial":"Western United States","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-104.053249,41.001406],[-102.124972,41.002338],[-102.051292,40.749591],[-102.04192,37.035083],[-102.979613,36.998549],[-103.002247,36.911587],[-103.064423,32.000518],[-106.565142,32.000736],[-106.577244,31.810406],[-106.750547,31.783706],[-108.208394,31.783599],[-108.208573,31.333395],[-111.000643,31.332177],[-114.813613,32.494277],[-114.722746,32.713071],[-117.118868,32.534706],[-117.50565,33.334063],[-118.088896,33.729817],[-118.428407,33.774715],[-118.519514,34.027509],[-119.159554,34.119653],[-119.616862,34.420995],[-120.441975,34.451512],[-120.608355,34.556656],[-120.644311,35.139616],[-120.873046,35.225688],[-120.884757,35.430196],[-121.851967,36.277831],[-121.932508,36.559935],[-121.788278,36.803994],[-121.880167,36.950151],[-122.140578,36.97495],[-122.419113,37.24147],[-122.511983,37.77113],[-122.425942,37.810979],[-122.168449,37.504143],[-122.144396,37.581866],[-122.385908,37.908136],[-122.301804,38.105142],[-122.484411,38.11496],[-122.492474,37.82484],[-122.972378,38.020247],[-123.103706,38.415541],[-123.725367,38.917438],[-123.851714,39.832041],[-124.373599,40.392923],[-124.063076,41.439579],[-124.536073,42.814175],[-124.150267,43.91085],[-123.962887,45.280218],[-123.996766,46.20399],[-123.548194,46.248245],[-124.029924,46.308312],[-124.06842,46.601397],[-123.97083,46.47537],[-123.84621,46.716795],[-124.022413,46.708973],[-124.108078,46.836388],[-123.86018,46.948556],[-124.138035,46.970959],[-124.425195,47.738434],[-124.672427,47.964414],[-124.727022,48.371101],[-123.981032,48.164761],[-122.748911,48.117026],[-122.637425,47.889945],[-123.15598,47.355745],[-122.527593,47.905882],[-122.578211,47.254804],[-122.725738,47.33047],[-122.691771,47.141958],[-122.796646,47.341654],[-122.863732,47.270221],[-122.67813,47.103866],[-122.364168,47.335953],[-122.429841,47.658919],[-122.230046,47.970917],[-122.425572,48.232887],[-122.358375,48.056133],[-122.512031,48.133931],[-122.424102,48.334346],[-122.689121,48.476849],[-122.425271,48.599522],[-122.796887,48.975026],[-104.048736,48.999877],[-104.053249,41.001406]]],[[[-119.789798,34.05726],[-119.5667,34.053452],[-119.795938,33.962929],[-119.916216,34.058351],[-119.789798,34.05726]]],[[[-118.524531,32.895488],[-118.573522,32.969183],[-118.369984,32.839273],[-118.524531,32.895488]]],[[[-118.500212,33.449592],[-118.32446,33.348782],[-118.593969,33.467198],[-118.500212,33.449592]]],[[[-122.519535,48.288314],[-122.66921,48.240614],[-122.400628,48.036563],[-122.419274,47.912125],[-122.744612,48.20965],[-122.664928,48.374823],[-122.519535,48.288314]]],[[[-122.800217,48.60169],[-122.883759,48.418793],[-123.173061,48.579086],[-122.949116,48.693398],[-122.743049,48.661991],[-122.800217,48.60169]]]]},\"properties\":{\"name\":\"Arizona\",\"nation\":\"USA \"}}]}","volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Porter, S.C.","contributorId":35066,"corporation":false,"usgs":true,"family":"Porter","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":781100,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pierce, K. L.","contributorId":12404,"corporation":false,"usgs":true,"family":"Pierce","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":781101,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hamilton, T. D.","contributorId":36921,"corporation":false,"usgs":true,"family":"Hamilton","given":"T.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":781102,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70208231,"text":"70208231 - 1983 - The Cordilleran ice sheet in Alaska","interactions":[],"lastModifiedDate":"2020-02-03T06:51:49","indexId":"70208231","displayToPublicDate":"1983-01-31T10:52:18","publicationYear":"1983","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"chapter":"2","title":"The Cordilleran ice sheet in Alaska","docAbstract":"No abstract available.
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