This study examines the porosity of limestones and dolomites in the South Florida basin. Porosity data are derived from borehole-gravity measurements and from suites of acoustic, neutron, and density logs. Both types of wire-line measurements sample large volumes of rock relative to petrographic methods and can be examined at vertical scales approaching those of aquifers and hydrocarbon reservoirs. Investigation depths range from the surface to about 18,000 ft (5,500 m) and span the transition from high-porosity near-surface carbonate sediments of Pleistocene age to much denser Mesozoic carbonate rocks with porosities of only a few percent.
Carbonate porosity in the South Florida basin was affected by a variety of diagenetic processes. However, a number of factors that could complicate porosity-depth relations are of limited importance in southern Florida. The basin contains little clastic material; present depths of burial are about equal to maximum depths of burial; the influences of tectonism, geopressures, and hydrocarbon accumulations are minimal.
Curves of porosity versus depth, reflecting large-scale porosity-loss processes in the subsurface, are derived for a composite carbonate section and for carbonate strata of different ages and compositions. The decrease of porosity with depth for a composite carbonate section representing a wide range of depositional environments and subsequent diagenetic histories can be characterized by the exponential function ^phgr = 41.73e -z8197/ (ft) [^phgr = 41.73e-z2498/ (m)], where ^phgr is the porosity (%) and z is the depth below ground level (feet or meters). Average porosity is reduced by a factor of two in a depth interval of about 5,700 ft (1,740 m).
Carbonate strata of different ages that are buried to equal depths show no systematic porosity differences. This implies that the effect of time on porosity in these rocks is probably subordinate to that of burial depth. The data also show a faster than expected rate of porosity decrease with depth for rocks of Eocene age and younger. If it is assumed that the decrease in the volume of evaporites in these rocks indicates less saline pore fluids, porosity loss in shallow-water carbonates may be inversely related to the magnesium content of pore waters.
Dolomite porosity is lower than limestone porosity in the near surface, but does not decrease as rapidly with depth. Below about 5,600 ft (1,700 m), dolomite is more porous than limestone. It is hypothesized that most dolomitization occurred relatively early and either reduced original porosity or selectively favored lower-porosity limestones. With continued burial, dolomite was more resistant than limestone to associated porosity-reducing effects.
","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/03B5AC73-16D1-11D7-8645000102C1865D","issn":"01491423","usgsCitation":"Schmoker, J., and Halley, R.B., 1982, Carbonate porosity versus depth: A predictable relation for south Florida: American Association of Petroleum Geologists Bulletin, v. 66, no. 12, p. 2561-2570, https://doi.org/10.1306/03B5AC73-16D1-11D7-8645000102C1865D.","productDescription":"10 p.","startPage":"2561","endPage":"2570","numberOfPages":"10","costCenters":[],"links":[{"id":221371,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -82.85584315482981,\n 28.645612618327064\n ],\n [\n -82.85584315482981,\n 24.950972952443635\n ],\n [\n -79.77389632621926,\n 24.950972952443635\n ],\n [\n -79.77389632621926,\n 28.645612618327064\n ],\n [\n -82.85584315482981,\n 28.645612618327064\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"66","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f36fe4b0c8380cd4b7f3","contributors":{"authors":[{"text":"Schmoker, J. W.","contributorId":69964,"corporation":false,"usgs":true,"family":"Schmoker","given":"J. W.","affiliations":[],"preferred":false,"id":361296,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Halley, R. B.","contributorId":87941,"corporation":false,"usgs":true,"family":"Halley","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":361297,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011294,"text":"70011294 - 1982 - Age and petrology of the Kalaupapa Basalt, Molokai, Hawaii ( geochemistry, Sr isotopes).","interactions":[],"lastModifiedDate":"2012-03-12T17:18:30","indexId":"70011294","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2990,"text":"Pacific Science","active":true,"publicationSubtype":{"id":10}},"title":"Age and petrology of the Kalaupapa Basalt, Molokai, Hawaii ( geochemistry, Sr isotopes).","docAbstract":"The post-erosional Kalaupapa Basalt on East Molokai, Hawaii, erupted between 0.34 and 0.57 million years ago to form the Kalaupapa Peninsula. The Kalaupapa Basalt ranges in composition from basanite to lava transitional between alkalic and tholeiitic basalt. Rare-earth and other trace-element abundances suggest that the Kalaupapa Basalt could be generated by 11-17% partial melting of a light-REE-enriched source like that from which the post-erosional lavas of the Honolulu Group on Oahu were generated by 2-11% melting. The 87Sr/86Sr ratios of the lavas range from 0.70320 to 0.70332, suggesting that the variation in composition mainly reflects variation in the melting process rather than heterogeneity of sources. The length of the period of volcanic quiescence that preceded eruption of post-erosional lavas in the Hawaiian Islands decreased as volcanism progressed from Kauai toward Kilauea. - Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pacific Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00308870","usgsCitation":"Clague, D., 1982, Age and petrology of the Kalaupapa Basalt, Molokai, Hawaii ( geochemistry, Sr isotopes).: Pacific Science, v. 36, no. 4, p. 411-420.","startPage":"411","endPage":"420","numberOfPages":"10","costCenters":[],"links":[{"id":221225,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e8e1e4b0c8380cd47f38","contributors":{"authors":[{"text":"Clague, D.A.","contributorId":36129,"corporation":false,"usgs":true,"family":"Clague","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":360764,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011722,"text":"70011722 - 1982 - Biostratigraphy and structural setting of the Permian Coyote Butte Formation of central Oregon","interactions":[],"lastModifiedDate":"2024-01-31T12:13:47.456206","indexId":"70011722","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Biostratigraphy and structural setting of the Permian Coyote Butte Formation of central Oregon","docAbstract":"Larger isolated outcrops of the limestones of the Coyote Butte Formation consistently contain younger over older faunas that range through most of the Leonardian Series of the Early Permian. The outcrops of the Coyote Butte Formation are interpreted as right-side up blocks probably introduced into the area as one massive exotic unit. The Coyote Butte Formation is very similar to the Lower Permian limestone near Quinn River Crossing, Nevada, and both are suggested to have a similar origin. The Coyote Butte Formation was probably introduced during a late-stage event to deforming Mesozoic oceanic sediments in Mesozoic time.
The polar regions of Mars preserve, in both their layering and their topography, a record of recent climate changes. Because of the coincidence of the growth of the northern seasonal cap with global dust storms, dust may be currently accumulating on the northern cap, but conditions at the poles will alternate with the precessional cycle. Deposition is also modulated by changes in eccentricity and obliquity, which interact complexly, affecting initiation of global dust storms, the stability of volatiles at the surface, and global wind regimes. Formation of spiral valleys and low undulations on the surface of the layered deposits may result from prefential sublimation of volatiles on sunward-facing slopes and condensation on the adjacent flats, with the rates also modulated by astronomically caused insolation variations. Lack of impact craters on the surface and lack of interruption of the layers by impact scars suggest that the polar deposits are no more than a few million years old. Older deposits may have been periodically removed, as indicated by etch-pitted terrain at the south pole and by superposition relations around the periphery of the present layered deposits. Evidence of ancient periodic climate changes that occurred before formation of the present layered terrain is fragmentary but includes pedestal craters, parallel moraine-like ridges, and etched ground at high latitudes. Perturbation of the orbital motions also results in adsorption and desorption of volatiles in the regolith, which leads to variations in atmospheric pressure and partial dehydration of the equatorial near-surface materials.
A degradation model is applied in conjunction with different soil models and stress-strain relations to site response analyses during earthquakes. To evaluate the effects of degradation, computations on two clay deposits subjected to both high and low-level input excitations are conducted. In addition, modulus degradation with or without shear strength reduction is discussed. In terms of surface response, degradation has little effect in the case of low-level excitation. With high-level excitatfons, however, degradation causes lower surface spectral response in the shorter period range, and the difference is on the same order as that from different soil models. Where surface response differs, the use of degradation with strength reduction is less conservative when compared to the use of degradation without strength reduction.
","language":"English","publisher":"ASCE","doi":"10.1061/AJGEB6.0001347","usgsCitation":"Chen, A., 1982, Application of modulus degradation model of clays: Journal of the Geotechnical Engineering Division, ASCE, v. 108, no. GT10, p. 1203-1214, https://doi.org/10.1061/AJGEB6.0001347.","productDescription":"12 p.","startPage":"1203","endPage":"1214","numberOfPages":"12","costCenters":[],"links":[{"id":221053,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"GT10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eca8e4b0c8380cd493f4","contributors":{"authors":[{"text":"Chen, A.T.F.","contributorId":47523,"corporation":false,"usgs":true,"family":"Chen","given":"A.T.F.","email":"","affiliations":[],"preferred":false,"id":361561,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011230,"text":"70011230 - 1982 - Infiltration formulas by curve number procedure.","interactions":[],"lastModifiedDate":"2013-03-18T08:02:10","indexId":"70011230","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2550,"text":"Journal of the Hydraulics Division","active":true,"publicationSubtype":{"id":10}},"title":"Infiltration formulas by curve number procedure.","docAbstract":"The Soil Conservation Service (SCS) curve number procedure for estimating runoff volume is examined in terms of the validity and applicability of the derived infiltration equations. -from ASCE Publications Abstracts","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the Hydraulics Division","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"ASCE","doi":"10.1061/(ASCE)0733-9429(1984)110:3(347)","usgsCitation":"Chen, C., 1982, Infiltration formulas by curve number procedure.: Journal of the Hydraulics Division, v. 108, no. HY7, p. 823-829, https://doi.org/10.1061/(ASCE)0733-9429(1984)110:3(347).","startPage":"823","endPage":"829","numberOfPages":"7","costCenters":[],"links":[{"id":221033,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269587,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9429(1984)110:3(347)"}],"volume":"108","issue":"HY7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3af3e4b0c8380cd620df","contributors":{"authors":[{"text":"Chen, Chiu-Lan","contributorId":100979,"corporation":false,"usgs":true,"family":"Chen","given":"Chiu-Lan","email":"","affiliations":[],"preferred":false,"id":360620,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1013897,"text":"1013897 - 1982 - A review of pond zooplankton production and fertilization for the culture of larval and fingerling striped bass","interactions":[],"lastModifiedDate":"2023-08-09T14:55:10.472023","indexId":"1013897","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":853,"text":"Aquaculture","active":true,"publicationSubtype":{"id":10}},"title":"A review of pond zooplankton production and fertilization for the culture of larval and fingerling striped bass","docAbstract":"Successful culture of the planktivorous fry of warmwater fish species such as striped bass (Morone saxatilis) depends heavily upon the composition and density of zooplankton established in rearing ponds during the 4–6-week culture period. The paper reviews the growth, reproduction, and succession patterns of zooplankton in ponds, organic and inorganic pond fertilization, and predator—prey relationships as they relate to the culture of striped bass fingerlings. Based upon this information, a pond management strategy is proposed using combinations of organic and liquid inorganic fertilizers and crustacean zooplankton inoculation to develop and maintain the zooplankton forage base in striped bass rearing ponds.
Zooplankton production and survival of striped bass fry (Morone saxatilis) were examined in ponds treated either with organic fertilizer (in 1980) or with a combination of organic and liquid inorganic fertilizers and inoculated with Daphnia pulex (in 1981). In 1980, there were significant differences in water quality variables and chlorophyll α levels among treatments in three series of three ponds fertilized only with different amounts of ground hay. Production of crustacean zooplankton was low, and rotifer populations increased as the number of crustaceans was reduced by predation. Electron transport system (ETS) activity was low in all treatments. Survival of striped bass differed greatly within and between treatments, ranging from 1 to 64% and averaging 17%. In 1981, water quality variation was less among treatments in four series of three ponds inoculated with Daphnia and fertilized either with chicken litter-chicken manure in combination with liquid ammonium nitrate and phosphoric acid, or with ground hay. Rotifer species were less abundant and numbers of crustacean zooplankton, total protein, and ETS activity were higher than in 1980. Survival of striped bass in 1981 ranged from 1 to 96% and averaged 45% in the ponds fertilized and inoculated with Daphnia. Numbers of striped bass fingerlings produced per hectare and percent survival were significantly greater in 1981 (manure-fertilized ponds) than in 1980 (hay-fertilized ponds). Combinations of organic and liquid inorganic fertilizers and zooplankton inoculation are suggested to develop and maintain the zooplankton forage base in striped bass rearing ponds. Management effort (including the amounts and timing of organic and liquid inorganic fertilizers) should be shifted to maximize crustacean zooplankton foods during the period 2 weeks before and 2 weeks after the fish are stocked.
In a recent issue of this journal, Huff and Tiirkmenoglu (1981) concluded that montmorillonite layers alter to iUite layers in mixed-layer illite/smectite (I/S) having 18 to 27% smectite layers and having rectorite-type ordering. K-fixation was inferred to be controlled largely by substitution of octahedral Mg for Al, a conclusion of major significance because almost all similarly interlayered clay described in the literature (Weaver and Pollard, 1973, among many others) has mostly substitution of tetrahedral A1 for Si. Their calculation of structural formulae from which layer-charge distributions were inferred involves the assumptions that K is the only significant interlayer cation and that Na and Ca detected in chemical analyses of the clays can be ignored for two reasons: (1) the amounts are small and most likely do not represent structural site occupancy, and (2) Ca is a likely contaminant because the metabentonite beds occur in a massive carbonate section. They further justified these assumptions by the close agreement between calculated interlayer and total layer charges.
","language":"English","publisher":"The Clay Minerals Society","doi":"10.1346/CCMN.1982.0300607","usgsCitation":"Schultz, L.G., 1982, Chemical characteristics and origin of Ordovician K-bentonites along the Cincinnati Arch: a discussion: Clays and Clay Minerals, v. 30, no. 6, p. 445-446, https://doi.org/10.1346/CCMN.1982.0300607.","productDescription":"2 p.","startPage":"445","endPage":"446","costCenters":[],"links":[{"id":221186,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"6","noUsgsAuthors":false,"publicationDate":"2024-04-02","publicationStatus":"PW","scienceBaseUri":"5059f55ae4b0c8380cd4c1ad","contributors":{"authors":[{"text":"Schultz, Leonard Gene","contributorId":19146,"corporation":false,"usgs":true,"family":"Schultz","given":"Leonard","email":"","middleInitial":"Gene","affiliations":[],"preferred":false,"id":361579,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011620,"text":"70011620 - 1982 - Estimating irrigation water use and withdrawal of ground water on the High Plains, U.S.A.","interactions":[],"lastModifiedDate":"2013-01-20T09:17:03","indexId":"70011620","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"Estimating irrigation water use and withdrawal of ground water on the High Plains, U.S.A.","docAbstract":"In four decades following the Dust Bowl days of the 1930's, extensive areas of dry farming and rangeland on the semi-arid U.S. High Plains were transformed into a vast region of irrigated oases, producing meat and grain for much of the world. The agricultural economy has experienced such rapid growth in part because of the availability of ground water and because of development of new irrigation technology to use that water for agriculture. However, more water is being used than is being replaced. To estimate both the volume of water withdrawn and the regional scope of the problem a technique has been developed that combines multispectral data from Earth-orbiting satellite with known pumpage data for the same growing season. The location and extent of irrigated cropland-some with different crops watered at different times-is inventoried using computer-assisted analysis of the data from Landsat. The amount of water used is estimated by multiplying and summing surface area of irrigated agriculture and the average measured pumpage from sampled sites. Published findings to date are cited in the Selected References. All suggest transferability of a promising technology to the study of land transformation processes elsewhere. ?? 1983.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Space Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0273-1177(82)90229-0","issn":"02731177","usgsCitation":"Wray, J.R., 1982, Estimating irrigation water use and withdrawal of ground water on the High Plains, U.S.A.: Advances in Space Research, v. 2, no. 8, p. 127-129, https://doi.org/10.1016/0273-1177(82)90229-0.","startPage":"127","endPage":"129","numberOfPages":"3","costCenters":[],"links":[{"id":220987,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266023,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0273-1177(82)90229-0"}],"volume":"2","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b24e4b0c8380cd525be","contributors":{"authors":[{"text":"Wray, J. R.","contributorId":51851,"corporation":false,"usgs":true,"family":"Wray","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361560,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011542,"text":"70011542 - 1982 - The graphic cell method: a new look at digitizing geologic maps","interactions":[],"lastModifiedDate":"2013-01-21T15:52:05","indexId":"70011542","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"The graphic cell method: a new look at digitizing geologic maps","docAbstract":"The graphic cell method is an alternative method of digitizing areal geologic information. It involves a discrete-point sampling scheme in which the computer establishes a matrix of cells over the map. Each cell and the whole cell is assigned the identity or value of the geologic information that is recognized at its center. Cell size may be changed to suit the needs of the user. The computer program resolves the matrix and identifies potential errors such as multiple assignments. Input includes the digitized boundaries of each geologic formation. This method should eliminate a primary bottleneck in the creation and testing of geomathematical models in such disciplines as resource appraisal. ?? 1982.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0098-3004(82)90018-8","issn":"00983004","usgsCitation":"Hanley, J., 1982, The graphic cell method: a new look at digitizing geologic maps: Computers & Geosciences, v. 8, no. 2, p. 149-161, https://doi.org/10.1016/0098-3004(82)90018-8.","startPage":"149","endPage":"161","numberOfPages":"13","costCenters":[],"links":[{"id":266194,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0098-3004(82)90018-8"},{"id":220912,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bac96e4b08c986b3235d5","contributors":{"authors":[{"text":"Hanley, J.T.","contributorId":73192,"corporation":false,"usgs":true,"family":"Hanley","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":361361,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70010391,"text":"70010391 - 1982 - Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin","interactions":[],"lastModifiedDate":"2012-03-12T17:18:25","indexId":"70010391","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin","docAbstract":"Stability analysis, based on infinite slope analysis and geotechnical data from a suite of 34 cores collected from the continental slope between Wilmington and Lindenkohl Canyons, indicates that the Quaternary surficial silty clay sediments on gentle slopes are stable; that sediment stability on steeper slopes (14??-19??) is marginal; and that on precipitous slopes (>50??) only a thin veneer of unconsolidated sediments can exist. Small earthquake-induced accelerations or the effects of internal waves can result in slope sediment instabilities. ?? 1982 A. M. Dowden, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geo-Marine Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF02462753","issn":"02760460","usgsCitation":"Almagor, G., Bennett, R., Mc Gregor, B., and Shephard, L., 1982, Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin: Geo-Marine Letters, v. 2, no. 3-4, p. 129-134, https://doi.org/10.1007/BF02462753.","startPage":"129","endPage":"134","numberOfPages":"6","costCenters":[],"links":[{"id":204898,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02462753"},{"id":218947,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b965ee4b08c986b31b478","contributors":{"authors":[{"text":"Almagor, G.","contributorId":16973,"corporation":false,"usgs":true,"family":"Almagor","given":"G.","email":"","affiliations":[],"preferred":false,"id":358812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bennett, R.H.","contributorId":34649,"corporation":false,"usgs":true,"family":"Bennett","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":358813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mc Gregor, B.A.","contributorId":82054,"corporation":false,"usgs":true,"family":"Mc Gregor","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":358815,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shephard, L.E.","contributorId":53940,"corporation":false,"usgs":true,"family":"Shephard","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":358814,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011505,"text":"70011505 - 1982 - The effect of natural weathering on the chemical and isotopic compositions of biotites","interactions":[],"lastModifiedDate":"2024-03-18T14:40:15.488216","indexId":"70011505","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"The effect of natural weathering on the chemical and isotopic compositions of biotites","docAbstract":"The effect of progressive natural weathering on the isotopic (Rb-Sr, K-Ar, δD, δ18O) and chemical (REE, H2O+) compositions of biotite has been studied on a suite of migmatitic biotites from the Chad Republic. During the early stages of weathering the Rb-Sr system is strongly affected, the hydrogen and oxygen isotope compositions change markedly, the minerals are depleted in light REE, the water content increases by a factor of two, and the K-Ar system is relatively little disturbed. During intensive weathering the K-Ar system is more strongly disturbed than the Rb-Sr system.
Most of the isotopic and chemical modifications take place under nonequilibrium conditions and occur before newly formed kaolinite and/or smectite can be detected. These observations suggest that
(a) “protominerals” may form within the biotite structure during the initial period of weathering, and
(b) only when chemical equilibrium is approached in the weathering profile are new minerals able to form.
A low compressional-wave velocity region in the midcrust below the San Francisco Mountain stratovolcano, Arizona, has been detected by the teleseismic P residual technique. This region is approximately 6 km wide, lies between elevations of 9 km and 34 km below sea level, and has a compressional velocity reduction of more than 6% with respect to the surrounding rocks. Several mechanisms are found to be quantitatively sufficient to produce such a feature. These include (1) a cool silicic pluton enclosed in a more mafic crust, (2) high temperature (near but below the solidus) in a quartz-bearing rock in the low-velocity region, (3) high density of water-filled cracks having pore pressures nearly equal to lithostatic pressure, and (4) the presence of melt, either in intergranular pores or in crystal-poor dikes.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB07p05451","issn":"01480227","usgsCitation":"Stauber, D., 1982, Two-dimensional compressional wave velocity structure under San Francisco Volcanic Field, Arizona, from teleseismic P residual measurements: Journal of Geophysical Research Solid Earth, v. 87, no. B7, p. 5451-5459, https://doi.org/10.1029/JB087iB07p05451.","productDescription":"9 p.","startPage":"5451","endPage":"5459","numberOfPages":"9","costCenters":[],"links":[{"id":220782,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B7","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bb992e4b08c986b327c84","contributors":{"authors":[{"text":"Stauber, D.A.","contributorId":52183,"corporation":false,"usgs":true,"family":"Stauber","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":361528,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011229,"text":"70011229 - 1982 - Obtaining maps and data from the U.S. Geological Survey","interactions":[],"lastModifiedDate":"2023-09-21T16:24:00.08603","indexId":"70011229","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1317,"text":"Computers, Environment and Urban Systems","active":true,"publicationSubtype":{"id":10}},"title":"Obtaining maps and data from the U.S. Geological Survey","docAbstract":"The U.S. Geological Survey produces a variety of resource information for the United States. This includes many data bases of particular interest to planners such as land use and terrain information prepared by the National Mapping Division, water quantity and quality data collected by Water Resources Division, and coal resource information gathered by the Geologic Division. These data are stored in various forms, and information on their availability can be obtained from appropriate offices in the U.S. Geological Survey as well as from USGS Circular 777. These data have been used for the management, development, and monitoring of our Nation's resources by Federal, State, and local agencies.
","language":"English","publisher":"Elsevier","doi":"10.1016/0198-9715(82)90016-3","usgsCitation":"Hallam, C.A., 1982, Obtaining maps and data from the U.S. Geological Survey: Computers, Environment and Urban Systems, v. 7, no. 4, p. 283-294, https://doi.org/10.1016/0198-9715(82)90016-3.","productDescription":"12 p.","startPage":"283","endPage":"294","numberOfPages":"12","costCenters":[],"links":[{"id":221032,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6b0ee4b0c8380cd744c6","contributors":{"authors":[{"text":"Hallam, Cheryl A.","contributorId":59012,"corporation":false,"usgs":true,"family":"Hallam","given":"Cheryl","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":360619,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011428,"text":"70011428 - 1982 - Aminostratigraphy and faunal correlations of late Quaternary marine terraces, Pacific Coast, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:18:34","indexId":"70011428","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Aminostratigraphy and faunal correlations of late Quaternary marine terraces, Pacific Coast, USA","docAbstract":"Recent studies using the extent of racemization of amino acids to date fossil mollusc shells in the Arctic1, the British Isles2 and on the Atlantic3,4 and Pacific5-13 coasts of North America have relied mainly on theoretical kinetic models of racemization. Ages generated in this fashion are highly model dependent and require estimates of integrated long-term diagenetic temperatures. We present here an alternative, empirical approach to aminostratigraphy in which we plot amino acid enantiomeric ratios versus latitude (for localities along the Pacific coast of the United States), and generate isochronal correlations by connecting data points of geographically proximal localities that have similar D:L ratios and zoogeographic aspect. Isochrons are calibrated at a few localities by independent radiometric dates. The diagenetic temperature effect on racemization is reflected in the slope of the isochrons, but the need to quantify temperature is eliminated. ?? 1982 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/299545a0","issn":"00280836","usgsCitation":"Kennedy, G.L., Lajoie, K.R., and Wehmiller, J., 1982, Aminostratigraphy and faunal correlations of late Quaternary marine terraces, Pacific Coast, USA: Nature, v. 299, no. 5883, p. 545-547, https://doi.org/10.1038/299545a0.","startPage":"545","endPage":"547","numberOfPages":"3","costCenters":[],"links":[{"id":205084,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/299545a0"},{"id":221112,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"299","issue":"5883","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e9bce4b0c8380cd48403","contributors":{"authors":[{"text":"Kennedy, G. L.","contributorId":23944,"corporation":false,"usgs":true,"family":"Kennedy","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":361077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lajoie, K. R.","contributorId":6828,"corporation":false,"usgs":true,"family":"Lajoie","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361076,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wehmiller, J.F.","contributorId":37891,"corporation":false,"usgs":false,"family":"Wehmiller","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":361078,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011721,"text":"70011721 - 1982 - Stability of βMnOOH and manganese oxide deposition from springwater","interactions":[],"lastModifiedDate":"2018-02-05T13:11:17","indexId":"70011721","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Stability of βMnOOH and manganese oxide deposition from springwater","docAbstract":"Beta MnOOH is precipitated preferentially (with respect to Mn3O4) at temperatures near O°C when Mn2+ is oxidized in aerated aqueous solutions. Upon aging in solutions open to the atmosphere a slurry of βMnOOH tends to disproportionate to form MnO2 and Mn2+. In such aged solutions, Mn2+ and H+ activities can be constant, and both the oxidation reaction Mn2++¼O2(aq) + 3/2H2O → βMnOOH (c) + 2H+ and the disproportionate reaction 2βMnOOH (c) + 2H+ → MnO2(c) + Mn2+ + 2H2O can have positive reaction affinities. It is not possible for both reactions to be in thermodynamic equilibrium in the same system unless oxygen is almost completely absent. A value for ΔGf0 of −129.8±0.6 kcal/mol was obtained for βMnOOH from experimental data by assuming that the reaction affinity for the oxidation reaction is equal to that for the disproportionation. A value for ΔGf0 for βMnOOH of −129.8±0.5 kcal/mol was determined by measuring the redox potentials for the postulated half-reaction MnO2 (c) + H+ + e− → βMnOOH (c) at 0°, 5°, and 15°C and extrapolating to 25°C. Both these values are consistent with laboratory observations that βMnOOH is less stable than γMnOOH or Mn3O4 at 25°C. Analytical data for manganese-depositing springwater samples are consistent with a nonequilibrium model involving disproportionation of either βMnOOH or Mn3O4.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i003p00563","usgsCitation":"Hem, J., Roberson, C.E., and Fournier, R.B., 1982, Stability of βMnOOH and manganese oxide deposition from springwater: Water Resources Research, v. 18, no. 3, p. 563-570, https://doi.org/10.1029/WR018i003p00563.","productDescription":"8 p.","startPage":"563","endPage":"570","costCenters":[],"links":[{"id":221543,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505b964fe4b08c986b31b426","contributors":{"authors":[{"text":"Hem, J.D.","contributorId":54576,"corporation":false,"usgs":true,"family":"Hem","given":"J.D.","affiliations":[],"preferred":false,"id":361805,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roberson, C. E.","contributorId":40190,"corporation":false,"usgs":true,"family":"Roberson","given":"C.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":361804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fournier, Reba B.","contributorId":51355,"corporation":false,"usgs":false,"family":"Fournier","given":"Reba","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":361806,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011587,"text":"70011587 - 1982 - Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah","interactions":[],"lastModifiedDate":"2023-01-10T17:56:03.888123","indexId":"70011587","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah","docAbstract":"The Douglas Creek Member of the Tertiary Green River Formation underlies much of the Uinta basin, Utah, and contains large volumes of oil and gas trapped in a complex of fractured low-permeability sandstone reservoirs. In the southeastern part of the basin at Pariette Bench, the Eocene Douglas Creek Member is a thick sequence of fine-grained alluvial sandstone complexly intercalated with lacustrine claystone and carbonate rock. Sediments were deposited in a subsiding intermontane basin along the shallow fluctuating margin of ancient Lake Uinta. Although the Uinta basin has undergone postdepositional uplift and erosion, the deepest cored rocks at Pariette Bench have never been buried more than 9,800 ft (3,000 m).
The sandstones, dominantly lithic arkoses and feldspathic litharenites, were derived from source terranes south of the Uinta basin. Secondary silica and several generations of authigenic calcite [Ca1.8-1.9(Mg0.02-0.06Fe0.02-0.06)(CO3)2], dolomite [Ca1.3-1.4(Mg0.6-0.7Fe0.02-0.04)(CO3)2], and ankerite [Ca1.2-1.3(Mg0.2-0.3Fe0.4-0.6)(CO3)2] form a replacive cement in the sandstones. Commonly, syntaxial overgrowths of late iron-bearing carbonate occur on detrital grains and preexisting relicts of iron-free carbonate cement. In sandstone where carbonate has been partly dissolved, abundant authigenic illite, partly ordered mixed- ayer illite-smectite, and small amounts of chlorite partly to completely fill secondary pores. Isotopic composition of carbonate cement and grain-supported rock range from -0.39 to -6.18 ^pmil for ^dgr13C and -7.80 to -13.98 ^pmil for ^dgr18O, indicating that authigenic carbonate formed at low temperatures in the presence of meteoric waters by a process of solution-precipitation. Enrichment of carbon and oxygen in early diagenetic calcite and fossiliferous rock relative to late diagenetic ankerite indicates a trend toward lighter isotopic carbonate compositions with increasing diagenesis.
Kerogenous rocks at Pariette Bench are thermochemically immature and therefore are not the source of oil produced in the field. Hydrocarbons are compositionally similar to some of the oils produced from the Green River Formation in the Bluebell-Altamont field and are interpreted to have migrated from mature Green River source rocks through a network of open fractures. The occurrence of small amounts of hydrocarbon in secondary pores indicates that its emplacement postdated carbonate dissolution.
","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/03B5A98F-16D1-11D7-8645000102C1865D","usgsCitation":"Pitman, J.K., Fouch, T.D., and Goldhaber, M., 1982, Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah: American Association of Petroleum Geologists Bulletin, v. 66, no. 10, p. 1581-1596, https://doi.org/10.1306/03B5A98F-16D1-11D7-8645000102C1865D.","productDescription":"16 p.","startPage":"1581","endPage":"1596","numberOfPages":"16","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":221598,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Uinta Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.0225857789739,\n 40.63348012338835\n ],\n [\n -111.0225857789739,\n 39.27696875971418\n ],\n [\n -108.75245518662385,\n 39.27696875971418\n ],\n [\n -108.75245518662385,\n 40.63348012338835\n ],\n [\n -111.0225857789739,\n 40.63348012338835\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"66","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fec8e4b0c8380cd4ef16","contributors":{"authors":[{"text":"Pitman, Janet K. 0000-0002-0441-779X jpitman@usgs.gov","orcid":"https://orcid.org/0000-0002-0441-779X","contributorId":767,"corporation":false,"usgs":true,"family":"Pitman","given":"Janet","email":"jpitman@usgs.gov","middleInitial":"K.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":361472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fouch, T. D.","contributorId":68333,"corporation":false,"usgs":true,"family":"Fouch","given":"T.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":361471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goldhaber, M. B. 0000-0002-1785-4243","orcid":"https://orcid.org/0000-0002-1785-4243","contributorId":103280,"corporation":false,"usgs":true,"family":"Goldhaber","given":"M. B.","affiliations":[],"preferred":false,"id":361473,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011513,"text":"70011513 - 1982 - Incorporation of prior information on parameters into nonlinear regression groundwater flow models: 1. Theory","interactions":[],"lastModifiedDate":"2018-02-05T13:18:02","indexId":"70011513","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Incorporation of prior information on parameters into nonlinear regression groundwater flow models: 1. Theory","docAbstract":"Prior information on the parameters of a groundwater flow model can be used to improve parameter estimates obtained from nonlinear regression solution of a modeling problem. Two scales of prior information can be available: (1) prior information having known reliability (that is, bias and random error structure) and (2) prior information consisting of best available estimates of unknown reliability. A regression method that incorporates the second scale of prior information assumes the prior information to be fixed for any particular analysis to produce improved, although biased, parameter estimates. Approximate optimization of two auxiliary parameters of the formulation is used to help minimize the bias, which is almost always much smaller than that resulting from standard ridge regression. It is shown that if both scales of prior information are available, then a combined regression analysis may be made.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i004p00965","usgsCitation":"Cooley, R.L., 1982, Incorporation of prior information on parameters into nonlinear regression groundwater flow models: 1. Theory: Water Resources Research, v. 18, no. 4, p. 965-976, https://doi.org/10.1029/WR018i004p00965.","productDescription":"12 p.","startPage":"965","endPage":"976","costCenters":[],"links":[{"id":221372,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a39f0e4b0c8380cd61aba","contributors":{"authors":[{"text":"Cooley, Richard L.","contributorId":8831,"corporation":false,"usgs":true,"family":"Cooley","given":"Richard","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":361298,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011429,"text":"70011429 - 1982 - Geochemistry of a Pliocene-Pleistocene oceanic-arc plutonic complex, Guadalcanal","interactions":[],"lastModifiedDate":"2012-03-12T17:18:34","indexId":"70011429","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of a Pliocene-Pleistocene oceanic-arc plutonic complex, Guadalcanal","docAbstract":"The Koloula Igneous Complex, on the island of Guadalcanal, consists of a low-K calc-alkaline sequence of 26 different intrusive phases. The major intrusions are characterized by K/Rb>400, Rb/Sr<0.06, ?? 18O of 5.7 to 7.2 and uniform 87Sr/86Sr of 0.70372. This article presents the first data describing oxygen and strontium isotopic behaviour within a plutonic suite that formed by crystal fractionation. ?? 1982 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/300139a0","issn":"00280836","usgsCitation":"Chivas, A., Andrew, A., Sinha, A., and O’Neil, J.R., 1982, Geochemistry of a Pliocene-Pleistocene oceanic-arc plutonic complex, Guadalcanal: Nature, v. 300, no. 5888, p. 139-143, https://doi.org/10.1038/300139a0.","startPage":"139","endPage":"143","numberOfPages":"5","costCenters":[],"links":[{"id":205085,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/300139a0"},{"id":221113,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"300","issue":"5888","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a16eae4b0c8380cd552ec","contributors":{"authors":[{"text":"Chivas, A.R.","contributorId":16573,"corporation":false,"usgs":true,"family":"Chivas","given":"A.R.","affiliations":[],"preferred":false,"id":361079,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Andrew, A.S.","contributorId":87688,"corporation":false,"usgs":true,"family":"Andrew","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":361082,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sinha, A.K.","contributorId":61563,"corporation":false,"usgs":true,"family":"Sinha","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":361080,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O’Neil, J. R.","contributorId":69633,"corporation":false,"usgs":true,"family":"O’Neil","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361081,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011625,"text":"70011625 - 1982 - Worth of geophysical data in natural- disaster- insurance rate setting.","interactions":[],"lastModifiedDate":"2024-04-15T16:38:31.608254","indexId":"70011625","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5202,"text":"Journal of Applied Meteorology and Climatology","onlineIssn":"1558-8432","printIssn":"1558-8424","active":true,"publicationSubtype":{"id":10}},"title":"Worth of geophysical data in natural- disaster- insurance rate setting.","docAbstract":"Insurance firms that offer natural-disaster insurance base their rates on available information. The benefits from collecting additional data and incorporating this information to improve parameter estimates of probability distributions that are used to characterize natural-disaster events can be determined by computing changes in premiums as a function of additional data. Specifically, the worth of data can be measured by changes in consumer's surplus (the widely applied measure of benefits to consumers used in benefit-cost analysis) brought about when the premiums are adjusted. In this paper, a formal model of the process for setting insurance rates is hypothesized in which the insurance firm sets rates so as to trade off penalties of overestimation and underestimation of expected damages estimated from currently available hydrologic data. A Bayesian preposterior analysis is performed which permits the determination of the expected benefits of collecting additional geophysical data by examining the changes in expected premium rates as a function of the longer record before the data are actually collected. An estimate of the expected benefits associated with collecting more data for the representative consumer is computed using an assumed demand function for insurance. In addition, a sensitivity analysis of expected benefits to changes in insurance demand and firm rate-setting procedures is carried out. From these results, conclusions are drawn regarding aggregate benefits to all flood insurance purchasers.
","language":"English","publisher":"American Meteorological Society","doi":"10.1175/1520-0450(1982)021<0453:WOGDIN>2.0.CO;2","issn":"08948763","usgsCitation":"Attanasi, E.D., and Karlinger, M., 1982, Worth of geophysical data in natural- disaster- insurance rate setting.: Journal of Applied Meteorology and Climatology, v. 21, no. 4, p. 453-460, https://doi.org/10.1175/1520-0450(1982)021<0453:WOGDIN>2.0.CO;2.","productDescription":"8 p.","startPage":"453","endPage":"460","numberOfPages":"8","costCenters":[],"links":[{"id":480275,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/1520-0450(1982)021<0453:wogdin>2.0.co;2","text":"Publisher Index Page"},{"id":221057,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd1dce4b08c986b32f5b8","contributors":{"authors":[{"text":"Attanasi, E. D. 0000-0001-6845-7160","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":107672,"corporation":false,"usgs":true,"family":"Attanasi","given":"E.","middleInitial":"D.","affiliations":[],"preferred":false,"id":361570,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karlinger, M.R.","contributorId":95039,"corporation":false,"usgs":true,"family":"Karlinger","given":"M.R.","affiliations":[],"preferred":false,"id":361569,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}