A minor earthquake occurred in western Nevada on January 9 at 6:59 a.m. PST. The magnitude 3.8 earthquake was located about 16 miles west of Carson City. MM IV effects were noted at Minden.
\nOn February 16 at 12:21 a.m. and February 23 at 3:10 a.m. PST, minor earthquakes occurred in southern most part of the States; they had magnitudes of 3.0 and 3.9, respectively, and were located in the Lake Mead area near Boulder City. The quakes were felt at Boulder City and Henderson, Nevada, and at Temple Bar, Arizona.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1983, Earthquakes; January-February 1983: Earthquake Information Bulletin (USGS), v. 15, no. 4, p. 150-156.","productDescription":"7 p.","startPage":"150","endPage":"156","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319196,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be3be4b0f59b85e02e29","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":623268,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70169280,"text":"70169280 - 1983 - A natural earthquake laboratory in Arkansas","interactions":[],"lastModifiedDate":"2016-03-23T16:06:03","indexId":"70169280","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"A natural earthquake laboratory in Arkansas","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Johnston, A.C., 1983, A natural earthquake laboratory in Arkansas: Earthquake Information Bulletin (USGS), v. 15, no. 6, p. 210-215.","productDescription":"6 p.","startPage":"210","endPage":"215","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319240,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be2ae4b0f59b85e02d92","contributors":{"authors":[{"text":"Johnston, A. C.","contributorId":85574,"corporation":false,"usgs":true,"family":"Johnston","given":"A.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":623442,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70169272,"text":"70169272 - 1983 - Seismology in Chile","interactions":[],"lastModifiedDate":"2016-04-07T16:10:27","indexId":"70169272","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Seismology in Chile","docAbstract":"The Department of Geology and Geophysics, which is under the faculties of Mathematics and Physical Sciences of the University of Chile, is the organization that is responsible for the Seismological Service of Chile and for installing,operating, and maintaining the seismological stations as well as all the strong-motion stations in Chile.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Kausel, E., 1983, Seismology in Chile: Earthquake Information Bulletin (USGS), v. 15, no. 1, p. 16-22.","productDescription":"7 p.","startPage":"16","endPage":"22","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319248,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Chile","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.4443359375,\n -18.396230138028812\n ],\n [\n -69.4775390625,\n -17.518344187852218\n ],\n [\n -68.994140625,\n -18.521283325496277\n ],\n [\n -68.466796875,\n -19.683970235888456\n ],\n [\n -68.5107421875,\n -20.509354588714576\n ],\n [\n -67.939453125,\n -22.024545601240327\n ],\n [\n -67.8515625,\n -22.836945920943844\n ],\n [\n -67.1044921875,\n -22.71539001933593\n ],\n [\n -67.060546875,\n -23.40276490540795\n ],\n [\n -67.412109375,\n -24.126701958681668\n ],\n [\n -68.5107421875,\n -24.56710835257599\n ],\n [\n -68.466796875,\n -25.40358497318669\n ],\n [\n -68.3349609375,\n -26.902476886279807\n ],\n [\n -68.8623046875,\n -27.29368922485238\n ],\n [\n -69.3017578125,\n -28.033197847676366\n ],\n [\n -69.9609375,\n -29.267232865200878\n ],\n [\n -69.9169921875,\n -30.600093873550072\n ],\n [\n -70.400390625,\n -31.01527898171125\n ],\n [\n -70.48828125,\n -32.10118973232094\n ],\n [\n -69.8291015625,\n -33.50475906922606\n ],\n [\n -70.0048828125,\n -34.34343606848294\n ],\n [\n -70.4443359375,\n -35.532226227703376\n ],\n [\n -70.7958984375,\n -36.42128244364947\n ],\n [\n -71.05957031249999,\n -36.949891786813275\n ],\n [\n -71.103515625,\n -37.71859032558814\n ],\n [\n -70.751953125,\n -38.58252615935329\n ],\n [\n -71.3671875,\n -38.925229047140526\n ],\n [\n -71.71875,\n -39.842286020743394\n ],\n [\n -71.7626953125,\n -40.68063802521456\n ],\n [\n -71.806640625,\n -41.96765920367816\n ],\n [\n -72.2021484375,\n -42.52069952914966\n ],\n [\n -71.630859375,\n -43.357138222110535\n ],\n [\n -71.630859375,\n -44.02442151965934\n ],\n [\n -71.4990234375,\n -44.49650533109346\n ],\n [\n -71.2353515625,\n -44.59046718130884\n ],\n [\n -71.9384765625,\n -44.809121700077355\n ],\n [\n -71.4111328125,\n -45.30580259943577\n ],\n [\n -71.6748046875,\n -46.25584681848032\n ],\n [\n -72.1142578125,\n -47.338822694822\n ],\n [\n -72.5537109375,\n -48.45835188280864\n ],\n [\n -73.125,\n -49.066668395581154\n ],\n [\n -73.4326171875,\n -49.86631672953867\n ],\n [\n -73.1689453125,\n -50.68079714532164\n ],\n [\n -72.4658203125,\n -50.65294336725709\n ],\n [\n -72.2900390625,\n -51.31688050404586\n ],\n [\n -72.1142578125,\n -51.97134580885172\n ],\n [\n -70.0048828125,\n -51.99841038239032\n ],\n [\n -68.5107421875,\n -52.29504228453733\n ],\n [\n -68.64257812499999,\n -54.97761367069625\n ],\n [\n -68.37890625,\n -55.60317816902704\n ],\n [\n -69.2138671875,\n -55.70235509327092\n ],\n [\n -73.6962890625,\n -54.342148864483406\n ],\n [\n -75.89355468749999,\n -50.541362965221616\n ],\n [\n -75.89355468749999,\n -46.13417004624325\n ],\n [\n -74.267578125,\n -39.436192999314066\n ],\n [\n -73.125,\n -33.28461996888768\n ],\n [\n -71.19140625,\n -24.206889622398023\n ],\n [\n -70.927734375,\n -18.729501999072138\n ],\n [\n -70.4443359375,\n -18.396230138028812\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"15","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be4ee4b0f59b85e02ef5","contributors":{"authors":[{"text":"Kausel, E.","contributorId":167761,"corporation":false,"usgs":false,"family":"Kausel","given":"E.","affiliations":[],"preferred":false,"id":623422,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70164341,"text":"70164341 - 1983 - Research in seismology and earthquake engineering in Venezuela","interactions":[],"lastModifiedDate":"2016-03-21T15:03:55","indexId":"70164341","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Research in seismology and earthquake engineering in Venezuela","docAbstract":"Venezuela has been affected by destructive earthquakes for the past four centuries. According to entries in the national seismic catalog, there have been about 180 earthquakes which have caused some type of damage to the country. The most catastrophic earthquake occurred on March 26, 1812, on the Bocono fault system and caused widespread destruction in the cities of Merida and Caracas and claimed an estimated 30,000 lives.
\nAfter the July 29, 1967, damaging earthquake (with a moderate magnitude of 6.3) caused widespread damage to the northern coastal area of Venezuela and to the Caracas Valley, the Venezuelan Government decided to establish a Presidential Earthquake Commission. This commission undertook the task of coordinating the efforts to study the after-effects of the earthquake. The July 1967 earthquake claimed numerous lives and caused extensive damage to the capital of Venezuela. In 1968, the U.S Geological Survey conducted a seismological field study in the northern coastal area and in the Caracas Valley of Venezuela. the objective was to study the area that sustained severe, moderate, and no damage to structures. A reported entitled Ground Amplification Studies in Earthquake Damage Areas: The Caracas Earthquake of 1967 documented, for the first time, short-period seismic wave ground-motion amplifications in the Caracas Valley. Figure 1 shows the area of severe damage in the Los Palos Grantes suburb and the correlation with depth of alluvium and the arabic numbers denote the ground amplification factor at each site in the area. the Venezuelan Government initiated many programs to study in detail the damage sustained and to investigate the ongoing construction practices. These actions motivated professionals in the academic, private, and Government sectors to develops further capabilities and self-sufficiency in the fields of engineering and seismology. Allocation of funds was made to assist in training professionals and technicians and in developing new seismological stations and new programs at the national level in earthquake engineering and seismology. A brief description of the ongoing programs in Venezuela is listed below. these programs are being performed by FUNVISIS and by other national organizations listed at the end of this article.
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During a 23-hour period on August 26 and 17, 1883, more than 4 cubic miles of volcanic debris exploded upward from Krakatau, resulting in the death of more than 36,000 people and producing catastrophic devastation. The 1883 events at Krakatau caused phenomena that were recorded around the world that lingered for several years after the main eruption.
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\nThe United States experienced a number of earthquakes during this reporting period, but only slight damage was reported from some of the earthquakes.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1983, Earthquakes, March-April 1983: Earthquake Information Bulletin (USGS), v. 15, no. 5, p. 189-194.","productDescription":"6 p.","startPage":"189","endPage":"194","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318613,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56dd62bde4b015c306fa4b4d","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":622018,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70168866,"text":"70168866 - 1983 - Earthquakes; July-August 1982","interactions":[],"lastModifiedDate":"2016-03-24T16:11:18","indexId":"70168866","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Earthquakes; July-August 1982","docAbstract":"During this reporting period, there were three major (7.0-7.9) earthquakes all in unpopulated areas. The quakes occurred north of Macquarie Island on July 7, in the Santa Cruz Islands on August 5, and south of Panama on August 19. In the United Stats, a number of earthquakes occurred, but no damage was reported.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1983, Earthquakes; July-August 1982: Earthquake Information Bulletin (USGS), v. 15, no. 1, p. 39-41.","productDescription":"3 p.","startPage":"39","endPage":"41","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318614,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56dd62c5e4b015c306fa4b83","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":622020,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70164354,"text":"70164354 - 1983 - Active submarine volcano sampled","interactions":[],"lastModifiedDate":"2019-11-13T15:52:48","indexId":"70164354","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Active submarine volcano sampled","docAbstract":"On June 4, 1982, two full dredge hauls of fresh lava were recovered from the upper flanks of Kavachi submarine volcano, Solomon Islands, in the western Pacific Ocean, from the water depths of 1,200 and 2,700 feet. the shallower dredge site was within 0.5 mile of the active submarine vent shown at the surface by an area of slick water, probably caused by gas emissions. Kavachi is a composite stratovolcano that has been observed to erupt every year or two for at least the last 30 years (see photographs). An island formed in 1952, 1961, 1965, and 1978; but, in each case, it rapidly eroded below sea level. The latest eruption was observed by Solair pilots during the several weeks up to and including May 18, 1982.
","language":"English","publisher":"U.S Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Taylor, B., 1983, Active submarine volcano sampled: Earthquake Information Bulletin (USGS), v. 15, no. 4, p. 148-149.","productDescription":"2 p.","startPage":"148","endPage":"149","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":316431,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Soloman Islands","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 154.62158203125,\n -4.806364708499984\n ],\n [\n 154.31396484375,\n -5.025282908609298\n ],\n [\n 156.81884765625,\n -9.037002898469408\n ],\n [\n 159.76318359375,\n -10.055402736564224\n ],\n [\n 162.79541015624997,\n -10.984335146101955\n ],\n [\n 162.66357421875,\n -10.206813072484595\n ],\n [\n 154.62158203125,\n -4.806364708499984\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"15","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56b08fbbe4b010e2af2a5d2b","contributors":{"authors":[{"text":"Taylor, B.","contributorId":36683,"corporation":false,"usgs":true,"family":"Taylor","given":"B.","email":"","affiliations":[],"preferred":false,"id":597097,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70162502,"text":"70162502 - 1983 - Tangshan, six years later","interactions":[],"lastModifiedDate":"2024-05-21T15:00:13.758262","indexId":"70162502","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Tangshan, six years later","docAbstract":"At 3:42 a.m on July 28, 1976, the now infamous Tangshan earthquake struck that heavily industrialized city in eastern China killing, by official count, 240,000 people. During the first 2 years after the earthquake, estimates of casualties ranged from 650,000 to 800,000. Almost certainly the exact number will never be known. The earthquake was measured at magntiude 7.8, and intensities that registered XI on teh Modified Mercalli Intensity Scale occurred throughout the city of Tangshan.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Wallace, R.E., 1983, Tangshan, six years later: Earthquake Information Bulletin (USGS), v. 15, no. 3, p. 102-107.","productDescription":"6 p.","startPage":"102","endPage":"107","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314827,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"China","otherGeospatial":"Tangshan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 117.92724609375,\n 39.11301365149975\n ],\n [\n 118.24584960937499,\n 38.77978137804918\n ],\n [\n 118.98193359375,\n 38.53097889440024\n ],\n [\n 119.37744140625,\n 38.976492485539396\n ],\n [\n 119.7509765625,\n 39.58875727696545\n ],\n [\n 119.761962890625,\n 40.371658891506094\n ],\n [\n 118.93798828125,\n 40.82212357516945\n ],\n [\n 118.311767578125,\n 41.02964338716638\n ],\n [\n 117.27905273437499,\n 40.75557964275589\n ],\n [\n 116.78466796875,\n 40.98819156349393\n ],\n [\n 117.103271484375,\n 39.605688178320804\n ],\n [\n 117.92724609375,\n 39.11301365149975\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"15","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a7556ce4b0b28f1184d88e","contributors":{"authors":[{"text":"Wallace, R. E.","contributorId":6823,"corporation":false,"usgs":true,"family":"Wallace","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":589698,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70142182,"text":"70142182 - 1983 - The role of remotely sensed and other special data for predictive modeling: the Umatilla, Oregon example","interactions":[],"lastModifiedDate":"2017-01-18T14:44:47","indexId":"70142182","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"The role of remotely sensed and other special data for predictive modeling: the Umatilla, Oregon example","docAbstract":"Landsat data and 1:24 000-scale aerial photographs were initially used to map the expansion of irrigation from 1973 to 1979 and to identify crops under irrigation in 1979. The crop data were then used with historical water requirement figures and digital topographic and hydrographic data to estimate water and power use for the 1979 irrigation season. The final project task involved production of a composite map of land suitability for irrigation development based on land cover (from Landsat), landownership, soil irrigability, slope gradient, and potential energy costs.
","language":"English","publisher":"American Society for Photogrammetry and Remote Sensing","usgsCitation":"Loveland, T., and Johnson, G., 1983, The role of remotely sensed and other special data for predictive modeling: the Umatilla, Oregon example: Photogrammetric Engineering and Remote Sensing, v. 49, no. 8, p. 1183-1192.","productDescription":"10 p.","startPage":"1183","endPage":"1192","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":298225,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","city":"Umatilla","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119.42413330078125,\n 45.87471224890479\n ],\n [\n -119.42413330078125,\n 45.954968795113395\n ],\n [\n -119.26071166992186,\n 45.954968795113395\n ],\n [\n -119.26071166992186,\n 45.87471224890479\n ],\n [\n -119.42413330078125,\n 45.87471224890479\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"49","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54f597cee4b02419550d2f55","contributors":{"authors":[{"text":"Loveland, Thomas R. 0000-0003-3114-6646 loveland@usgs.gov","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":3005,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas R.","email":"loveland@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":541700,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Gary E.","contributorId":65007,"corporation":false,"usgs":true,"family":"Johnson","given":"Gary E.","affiliations":[],"preferred":false,"id":541701,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70140556,"text":"70140556 - 1983 - Synthesis of geophysical data with space-acquired imagery: a review","interactions":[],"lastModifiedDate":"2017-12-14T16:41:05","indexId":"70140556","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":661,"text":"Advances in Space Research","active":true,"publicationSubtype":{"id":10}},"title":"Synthesis of geophysical data with space-acquired imagery: a review","docAbstract":"Geophysical data obtained from ground and airborne platforms have been used in the development of regional geologic models for many years. Space-acquired data and imagery have a shorter but similar history of applications. All these data may be synthesized either manually or digitally. Manual synthesis methods consist of overlaying and comparing maps, whereas digital synthesis methods consist of computer storage and analysis of registered digital data sets.
\nA data base may include topographic, geologic, soils, aeromagnetic, gravity, radiometric, electromagnetic and geochemical data, and Landsat, Seasat, and Heat Capacity Mapping Mission (HCMM) images, all of which can be evaluated individually or compared in multiple layers (overlays).
\nStereographic models, useful in the correlation and interpretation of geophysical data, have been created from Landsat images by using aeromagnetic, gravity, geochemical, or topographic values to offset Landsat pixels, thus introducing parallax and permitting stereoscopic viewing.
\nStatistical correlation has been used to determine the applicability of specific data sets to the development of geologic or exploration models. Various arithmetic functions have proven useful in developing models from such data sets.
","language":"English","publisher":"Elsevier","doi":"10.1016/0273-1177(83)90116-3","usgsCitation":"Hastings, D.A., 1983, Synthesis of geophysical data with space-acquired imagery: a review: Advances in Space Research, v. 3, no. 2, p. 157-168, https://doi.org/10.1016/0273-1177(83)90116-3.","productDescription":"12 p.","startPage":"157","endPage":"168","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":297837,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54dd2c67e4b08de9379b379a","contributors":{"authors":[{"text":"Hastings, David A.","contributorId":138985,"corporation":false,"usgs":true,"family":"Hastings","given":"David","email":"","middleInitial":"A.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":540071,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70135747,"text":"70135747 - 1983 - Furrowed outcrops of Eocene chalk on the lower continental slop offshore New Jersey","interactions":[],"lastModifiedDate":"2017-08-31T10:53:08","indexId":"70135747","displayToPublicDate":"1983-01-01T00:00:00","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":"Furrowed outcrops of Eocene chalk on the lower continental slop offshore New Jersey","docAbstract":"A sea bottom of middle Eocene calcareous claystone cut by downslope-trending furrows was observed during an Alvin dive to the mouth of Berkeley Canyon on the continental slope off New Jersey. The furrows are 10 to 50 m apart, 4 to 13 m deep, linear, and nearly parallel in water depths of 2,000 m. They have steep walls and flat floors 3 to 5 m wide, of fine-grained sediment. Mid-range sidescan-sonar images show that similarly furrowed surfaces are found on nearby areas of the lower continental slope, not associated with canyons. The furrows are overlain in places by Pleistocene sediments. Although they show evidence of erosional origin, they do not appear to be related to observed structures, and their straight, parallel pattern is not well understood. A general cover of flocky unconsolidated sediments implies that bottom-current erosion is not active now.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1983)11<182:FOOECO>2.0.CO;2","usgsCitation":"Robb, J.M., Kirby, J., Hampson, J.C., Gibson, P.R., and Hecker, B., 1983, Furrowed outcrops of Eocene chalk on the lower continental slop offshore New Jersey: Geology, v. 11, no. 3, p. 182-186, https://doi.org/10.1130/0091-7613(1983)11<182:FOOECO>2.0.CO;2.","productDescription":"5 p.","startPage":"182","endPage":"186","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":296711,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Jersey","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.234375,\n 38.28993659801203\n ],\n [\n -71.12548828125,\n 38.28993659801203\n ],\n [\n -71.12548828125,\n 39.90973623453719\n ],\n [\n -75.234375,\n 39.90973623453719\n ],\n [\n -75.234375,\n 38.28993659801203\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"11","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"549165c3e4b0d0759afaad84","contributors":{"authors":[{"text":"Robb, James M.","contributorId":73272,"corporation":false,"usgs":true,"family":"Robb","given":"James","email":"","middleInitial":"M.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536801,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirby, John R.","contributorId":91826,"corporation":false,"usgs":true,"family":"Kirby","given":"John R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536802,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hampson, John C.","contributorId":90735,"corporation":false,"usgs":true,"family":"Hampson","given":"John","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536803,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gibson, Patricia R.","contributorId":11539,"corporation":false,"usgs":false,"family":"Gibson","given":"Patricia","email":"","middleInitial":"R.","affiliations":[{"id":7135,"text":"Lamont Doherty Earth Observatory, Columbia University, Palisades, NY","active":true,"usgs":false}],"preferred":false,"id":536804,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hecker, Barbara","contributorId":33843,"corporation":false,"usgs":false,"family":"Hecker","given":"Barbara","email":"","affiliations":[{"id":7135,"text":"Lamont Doherty Earth Observatory, Columbia University, Palisades, NY","active":true,"usgs":false}],"preferred":false,"id":536805,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70135755,"text":"70135755 - 1983 - Sedimentology of Southwestern Roads region, U.S. Virgin Islands: origin and rate of sediment accumulation","interactions":[],"lastModifiedDate":"2017-12-14T17:12:00","indexId":"70135755","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2451,"text":"Journal of Sedimentary Research","onlineIssn":"1938-3681","printIssn":"1527-1404","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentology of Southwestern Roads region, U.S. Virgin Islands: origin and rate of sediment accumulation","docAbstract":"Sand deposits on southern insular shelf of St. Thomas, U.S. Virgin Islands, were investigated to determine their origin, environmental processes and accumulation rates. Sea-floor samples show that the sand has been derived (in situ) mainly from calcareous algae and molluscs. Zonation of the dominant sand producers is related to the present environmental setting; water depth has the greatest influence. Carbon-14 data (bulk sample) of cores indicate accumulation rates of slightly less than 1 mm/year for the last 5,000 years. Faunal studies show that the climate has remained constant over the past 5,000 years. The only changes in environmental conditions appear to have been an increase in water depth, changes in the patterns of water movement, and an increase in water temperature.
","language":"English","publisher":"American Geological Institute","doi":"10.1306/212F8201-2B24-11D7-8648000102C1865D","usgsCitation":"Kindinger, J.L., Miller, R.J., and Holmes, C.W., 1983, Sedimentology of Southwestern Roads region, U.S. Virgin Islands: origin and rate of sediment accumulation: Journal of Sedimentary Research, v. 53, no. 2, p. 439-447, https://doi.org/10.1306/212F8201-2B24-11D7-8648000102C1865D.","productDescription":"9 p.","startPage":"439","endPage":"447","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":296717,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Virgin Islands","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -65.00335693359375,\n 17.89250058043452\n ],\n [\n -64.53369140625,\n 17.921249418623304\n ],\n [\n -64.5172119140625,\n 17.612610761099077\n ],\n [\n -65.00335693359375,\n 17.602139123350852\n ],\n [\n -65.00335693359375,\n 17.89250058043452\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"53","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"549165d1e4b0d0759afaad97","contributors":{"authors":[{"text":"Kindinger, Jack L. jkindinger@usgs.gov","contributorId":815,"corporation":false,"usgs":true,"family":"Kindinger","given":"Jack","email":"jkindinger@usgs.gov","middleInitial":"L.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Ronald J.","contributorId":42213,"corporation":false,"usgs":true,"family":"Miller","given":"Ronald","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":536829,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Holmes, Charles W.","contributorId":31071,"corporation":false,"usgs":true,"family":"Holmes","given":"Charles","email":"","middleInitial":"W.","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":536830,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70135752,"text":"70135752 - 1983 - Talc in the suspended matter of the northwestern Atlantic","interactions":[],"lastModifiedDate":"2017-10-04T13:51:07","indexId":"70135752","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1245,"text":"Clays and Clay Minerals","onlineIssn":"1552-8367","printIssn":"0009-8604","active":true,"publicationSubtype":{"id":10}},"title":"Talc in the suspended matter of the northwestern Atlantic","docAbstract":"Knowledge of the distribution, concentration, and composition of suspended particulate matter in seawater is important to the understanding of sedimentation processes on the Continental Shelf. Because the surfaces of both organic and inorganic particles have high affinities for pollutants, such as certain trace metals, chlorinated hydrocarbons, and petroleum (Bothner et al., 1981a), suspended matter plays a major role in the transport and fate of pollutants introduced into shelf and coastal waters. Although the composition of bottom sediments on the shelf off the northeastern United States is reasonably well known, the mineralogical composition and distribution of inorganic suspended matter is less well studied.
","language":"English","publisher":"Clay Minerals Society","doi":"10.1346/CCMN.1983.0310110","usgsCitation":"Poppe, L., Hathaway, J.C., and Parmenter, C.M., 1983, Talc in the suspended matter of the northwestern Atlantic: Clays and Clay Minerals, v. 31, no. 1, p. 60-64, https://doi.org/10.1346/CCMN.1983.0310110.","productDescription":"5 p.","startPage":"60","endPage":"64","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":296715,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Northwestern Atlantic","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.89453125,\n 44.15068115978091\n ],\n [\n -78.837890625,\n 37.26530995561875\n ],\n [\n -72.4658203125,\n 34.66935854524543\n ],\n [\n -67.0166015625,\n 42.90816007196054\n ],\n [\n -71.89453125,\n 44.15068115978091\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"31","issue":"1","noUsgsAuthors":false,"publicationDate":"2024-04-02","publicationStatus":"PW","scienceBaseUri":"549165d7e4b0d0759afaada2","contributors":{"authors":[{"text":"Poppe, Lawrence J. lpoppe@usgs.gov","contributorId":2149,"corporation":false,"usgs":true,"family":"Poppe","given":"Lawrence J.","email":"lpoppe@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hathaway, John C.","contributorId":21542,"corporation":false,"usgs":true,"family":"Hathaway","given":"John","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parmenter, Carol M.","contributorId":9284,"corporation":false,"usgs":true,"family":"Parmenter","given":"Carol","email":"","middleInitial":"M.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536814,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70135760,"text":"70135760 - 1983 - High-porosity Cenozoic carbonate rocks of South Florida: Progressive loss of porosity with depth","interactions":[],"lastModifiedDate":"2017-11-29T13:46:46","indexId":"70135760","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":605,"text":"AAPG Bulletin","printIssn":"0149-1423","active":true,"publicationSubtype":{"id":10}},"title":"High-porosity Cenozoic carbonate rocks of South Florida: Progressive loss of porosity with depth","docAbstract":"Porosity measurements by borehole gravity meter in subsurface Cenozoic carbonates of south Florida reveal an extremely porous mass of limestone and dolomite which is transitional in total pore volume between typical porosity values for modern carbonate sediments and ancient carbonate rocks. A persistent decrease of porosity with depth, similar to that of chalks of the Gulf Coast, occurs in these rocks. We make no attempt to differentiate depositional or diagenetic facies which produce scatter in the porosity-depth relationship; the dominant data trends thus are functions of carbonate rocks in general rather than of particular carbonate facies. Carbonate strata with less than 20% porosity are absent from the rocks studied here.
Aquifers and aquicludes cannot be distinguished on the basis of porosity. Although aquifers are characterized by great permeability and well-developed vuggy and even cavernous porosity in some intervals, they are not exceptionally porous when compared to other Tertiary carbonate rocks in south Florida. Permeability in these strata is governed more by the spacial distribution of pore space and matrix than by the total volume of porosity present.
Dolomite is as porous as, or slightly less porous than, limestones in these rocks. This observation places limits on any model proposed for dolomitization and suggests that dolomitization does not take place by a simple ion-for-ion replacement of magnesium for calcium. Dolomitization may be selective for less porous limestone, or it may involve the incorporation of significant amounts of carbonate as well as magnesium into the rock.
The great volume of pore space in these rocks serves to highlight the inefficiency of early diagenesis in reducing carbonate porosity and to emphasize the importance of later porosity reduction which occurs during the burial or late near-surface history of limestones and dolomites.
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\"}}]}","volume":"67","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"549165c7e4b0d0759afaad87","contributors":{"authors":[{"text":"Halley, Robert B.","contributorId":45692,"corporation":false,"usgs":true,"family":"Halley","given":"Robert B.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536835,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmoker, James W.","contributorId":52171,"corporation":false,"usgs":true,"family":"Schmoker","given":"James","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":536836,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70135746,"text":"70135746 - 1983 - Sea-floor-mounted rotating side-scan sonar for making time-lapse sonographs","interactions":[],"lastModifiedDate":"2014-12-16T11:50:38","indexId":"70135746","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Sea-floor-mounted rotating side-scan sonar for making time-lapse sonographs","docAbstract":"A rotating side-scan sonar system was designed to make time-lapse sonographs of a circular area of the sea floor. To construct the system, the transducers of a commercial side-scan system (frequency 105 kHz; pulse length 0.1 ms; horizontal beam width 1°; vertical beam width 20°; beam depressed 10° with respect to horizontal) were mounted 2 m above the sea floor on a vertical shaft that had a rotation speed of 0.5 rpm.
\n\n
The radially collected sonar images are recorded linearly on a standard side-scan recorder. To convert the linear record to a radial record, the original moving record is photographed through a slit by a rotating camera, exposing a circular image on film.
\n\n
Records that are collected with this system offer several advantages over records that are collected with towed systems. Bottom features are presented in nearly true plan geometry, and transducer yaw, pitch, and roll are eliminated. Most importantly, repeated observations can be made from a single point, and bedform movements of <50 cm can be measured. In quiet seas the maximum useful range of the system varies from 30 m (for mapping ripples) to 200 m (for mapping 10-m wavelength sand waves) to 450 m or more (for mapping gravel patches).
","language":"English","publisher":"Elsevier","doi":"10.1016/0278-4343(83)90029-8","usgsCitation":"Rubin, D.M., McCulloch, D.S., and Hill, H.R., 1983, Sea-floor-mounted rotating side-scan sonar for making time-lapse sonographs: Continental Shelf Research, v. 1, no. 3, p. 295-301, https://doi.org/10.1016/0278-4343(83)90029-8.","productDescription":"7 p.","startPage":"295","endPage":"301","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":296709,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"549165d1e4b0d0759afaad95","contributors":{"authors":[{"text":"Rubin, David M. 0000-0003-1169-1452 drubin@usgs.gov","orcid":"https://orcid.org/0000-0003-1169-1452","contributorId":3159,"corporation":false,"usgs":true,"family":"Rubin","given":"David","email":"drubin@usgs.gov","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":536798,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCulloch, David S. dmccullo@usgs.gov","contributorId":3100,"corporation":false,"usgs":true,"family":"McCulloch","given":"David","email":"dmccullo@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":536799,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hill, Harry R.","contributorId":20745,"corporation":false,"usgs":true,"family":"Hill","given":"Harry","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":536800,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}