The current inconsistency over the use of single vs. double -i endings for singular masculine scientific patronyms in official lists of scientific names of fishes causes needless confusion and labor. Taxonomists once preferred rules for Latinization calling for double -i endings, but current rules suggest single -i endings. Recent rulings by the International Commission of Zoological Nomenclature make it impossible to produce uniformity in this area. It is suggested that the Committee on Names of Fishes submit a petition to the Commission that modifies the present rules to allow the use of single -i endings in most cases and thus conform with current literature and the opinions of most ichthyologists.
","language":"English","publisher":"Wiley","doi":"10.1577/1548-8446(1982)007<0009:TNEOSV>2.0.CO;2","usgsCitation":"Jennings, M., 1982, The nomenclatural enigma of single versus double -i endings for scientific patronyms emended to represent a man's name: A comment and some considerations: Fisheries, v. 7, no. 5, p. 9-10, https://doi.org/10.1577/1548-8446(1982)007<0009:TNEOSV>2.0.CO;2.","productDescription":"2 p.","startPage":"9","endPage":"10","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":131588,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b46b0","contributors":{"authors":[{"text":"Jennings, M.R.","contributorId":18296,"corporation":false,"usgs":true,"family":"Jennings","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":315597,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1007619,"text":"1007619 - 1982 - A population model of the lizard Uta stansburiana, in southern Nevada","interactions":[],"lastModifiedDate":"2023-10-11T16:52:50.380295","indexId":"1007619","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1459,"text":"Ecological Monographs","active":true,"publicationSubtype":{"id":10}},"title":"A population model of the lizard Uta stansburiana, in southern Nevada","docAbstract":"Population densities, reproduction, and survival of the lizard Uta stansburiana were measured at the Nevada Test Site in southern Nevada, USA, between 1964 and 1974. These data were used to develop a model of the population dynamics of this species. Results of irrigation experiments in 0.4—ha enclosures near Mercury, Nevada, were used to formulate multiple—regression equations predicting frequency and size of clutches laid by two age—classes of females in terms of winter rainfall, March air temperatures, and Uta population density. Densities of Uta in these enclosures were manipulated, and age—specific survival modeled in terms of spring densities of Uta. Experiments in which an important predator on Uta (the leopard lizard, Crotaphytus wislizeni) was removed from enclosures were used to estimate the influence of the predator on basic survival rates of hatchling and older Uta. The model was generally developed from data acquired in the small enclosures, but predictions were compared with actual observations of changes in Uta populations in Rock Valley (19 km west of Mercury, Nevada) between 1966 and 1972. Agreement between model predictions and actual numbers was fair. The model predicted a decrease in density from 1966 to 1967, but numbers of Uta actually increased conspicuously at this time. This was the only major discrepancy between predictions and observations. The observed mean spring density (d) between 1967 and 1972 was 41.4 Uta/ha (Sd = 20.8), while the model predicted a mean density of 37.8 Uta/ha (SD = 13.6). Observed and predicted mean proportions of yearlings in spring populations were identical (0.78). The basic version of the model estimated different survival rates for two age—groups of adult Uta. A simpler version of the model, using a common survival rate for both age—groups, gave predictions essentially identical with those of the basic model. Other tests of the basic model showed it to be most sensitive to changes in winter rainfall and predation pressure, much less so to air temperatures. Fifteen— and 30—yr synthetic sequences of predator densities were used to examine model stability over longer periods of time. When predator densities were drawn randomly from distributions with a mean of 2 individuals/ha, model populations exhibited lower mean numbers and amplitudes than actually observed during 9 yr in Rock Valley. The basic model included three density—dependent parameters: clutch frequency, clutch size, and adult survival. The model was modified so that (1) egg production was density independent, while adult survival was not; (2) adult survival was density independent, but egg production was not; and (3) there was no density dependence in the model. Thirty—year tests showed that cases 1 and 2 did not differ markedly from the basic model, although the removal of one density—dependent constraint resulted in slightly higher mean densities. In case 3, the model lacked stability and predicted numbers increased to unrealistic levels within 5 yr. We conclude that processes relating to egg production were modeled more effectively than those influencing survival, and that improvement of the model will depend on more detailed studies of the impact of predation on age—specific survival rates of Uta.
","language":"English","publisher":"Ecological Society of America","doi":"10.2307/2937330","usgsCitation":"Turner, F.B., Medica, P.A., Bridges, K.W., and Jennrich, R.I., 1982, A population model of the lizard Uta stansburiana, in southern Nevada: Ecological Monographs, v. 52, no. 3, p. 243-259, https://doi.org/10.2307/2937330.","productDescription":"17 p.","startPage":"243","endPage":"259","numberOfPages":"17","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":130031,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Nevada Test Site","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.10256765496331,\n 37.90030797036627\n ],\n [\n -117.10256765496331,\n 36.536675355543494\n ],\n [\n -115.19763756878459,\n 36.536675355543494\n ],\n [\n -115.19763756878459,\n 37.90030797036627\n ],\n [\n -117.10256765496331,\n 37.90030797036627\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"52","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1fe4b07f02db6ab752","contributors":{"authors":[{"text":"Turner, Frederick B.","contributorId":44086,"corporation":false,"usgs":true,"family":"Turner","given":"Frederick","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":315734,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Medica, Phil A. 0000-0002-5901-8841 pmedica@usgs.gov","orcid":"https://orcid.org/0000-0002-5901-8841","contributorId":3226,"corporation":false,"usgs":true,"family":"Medica","given":"Phil","email":"pmedica@usgs.gov","middleInitial":"A.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":315732,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bridges, K. W.","contributorId":38933,"corporation":false,"usgs":false,"family":"Bridges","given":"K.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":315731,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jennrich, R. I.","contributorId":77476,"corporation":false,"usgs":true,"family":"Jennrich","given":"R.","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":315733,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":2002363,"text":"2002363 - 1982 - Effects of soils and grazing on breeding birds of uncultivated upland grasslands of the Northern Great Plains","interactions":[],"lastModifiedDate":"2017-12-29T12:47:33","indexId":"2002363","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":99,"text":"Wildlife Research Report","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"15","title":"Effects of soils and grazing on breeding birds of uncultivated upland grasslands of the Northern Great Plains","docAbstract":"The principal use of uncultivated upland grasslands in the northern Great Plains is for livestock production. However, on lands set aside for wildlife or for scientific or recreational use, grazing by livestock may be used as a management measure to enhance populations of game species or to create conditions that increase the diversity of plant or animal species. To determine the effects of grazing on the avifauna of various types of Great Plains grasslands, we conducted bird censuses and plant surveys during 1974-78 on 615 plots of lightly, moderately, or heavily grazed native rangeland.Numbers of horned lark (Eremophila alpestris), western meadowlark (Sturnella neglecta), lark bunting (Calamospiza melanocorys), and chestnut-collared longspur (Calcarius ornatus) accounted for 65-75% of the total bird population, regardless of grazing intensity. For the entire area sampled (600,000 km2), horned lark, western meadowlark, and chestnut-collared longspur were the dominant birds. Major differences in composition of the dominant species and species richness occurred among the major soils. Increased mean annual soil temperature seemingly had a greater negative influence on avian species richness than did decreased soil moisture or organic matter content. Differences in total bird density were not significant among soils and among grazing intensities within most soils. For the area as a whole, light or moderate grazing resulted in increased species richness. Of the 29 species studied, 2 responded significantly to grazing for the area as a whole and 6 others to grazing on the soil in which peak densities occurred. Response of several other species to grazing effects evidently varied among strata.A list of plants with mean cover values of more than 1% in any of the 18 combinations of soils and grazing intensities contained less than 25 species, attesting to the relative simplicity of the grassland vegetation in the northern Great Plains. Agropyron spp. and Bouteloua gracilis were the dominant plants that provided greater than average cover on the best habitat for the most bird species. Optimum habitat for each bird species is given in terms of grazing, soils, and dominant plant species. Increased soil temperature probably had a negative effect on plant species richness, especially among soils with a high organic matter content that supported perennial grasses and other mesophytes.","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, DC","usgsCitation":"Kantrud, H., and Kologiski, R., 1982, Effects of soils and grazing on breeding birds of uncultivated upland grasslands of the Northern Great Plains: Wildlife Research Report 15, 33 p.","productDescription":"33 p.","startPage":"0","endPage":"33","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":199139,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":94289,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://hdl.handle.net/2027/mdp.39015012634674?urlappend=%3Bseq=459"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a28e4b07f02db610b2b","contributors":{"authors":[{"text":"Kantrud, H.A.","contributorId":28553,"corporation":false,"usgs":true,"family":"Kantrud","given":"H.A.","email":"","affiliations":[],"preferred":false,"id":326511,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kologiski, R.L.","contributorId":28213,"corporation":false,"usgs":true,"family":"Kologiski","given":"R.L.","affiliations":[],"preferred":false,"id":326510,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":93993,"text":"93993 - 1982 - The impact of entrainment and impingement on fish populations in the Hudson River estuary: Volume II: Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass Spawning stock, and the LMS Real-Time Life Cycle Model","interactions":[],"lastModifiedDate":"2012-02-02T00:03:53","indexId":"93993","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"The impact of entrainment and impingement on fish populations in the Hudson River estuary: Volume II: Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass Spawning stock, and the LMS Real-Time Life Cycle Model","docAbstract":"No abstract available at this time","language":"English","publisher":"Oak Ridge National Laboratory","publisherLocation":"Oak Ridge, TN","collaboration":"None/FC","usgsCitation":"Barnthouse, L., Van Winkle, W., Golumbek, J., Cada, G.F., Goodyear, C., Christensen, S., Cannon, J., and Lee, D., 1982, The impact of entrainment and impingement on fish populations in the Hudson River estuary: Volume II: Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass Spawning stock, and the LMS Real-Time Life Cycle Model.","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":127186,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a86e4b07f02db64d8d9","contributors":{"authors":[{"text":"Barnthouse, L.W.","contributorId":107221,"corporation":false,"usgs":true,"family":"Barnthouse","given":"L.W.","email":"","affiliations":[],"preferred":false,"id":298346,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Winkle, W.","contributorId":87876,"corporation":false,"usgs":true,"family":"Van Winkle","given":"W.","email":"","affiliations":[],"preferred":false,"id":298344,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Golumbek, J.","contributorId":102413,"corporation":false,"usgs":true,"family":"Golumbek","given":"J.","email":"","affiliations":[],"preferred":false,"id":298345,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cada, G. F.","contributorId":67820,"corporation":false,"usgs":true,"family":"Cada","given":"G.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":298343,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Goodyear, C.P.","contributorId":11538,"corporation":false,"usgs":true,"family":"Goodyear","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":298340,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Christensen, S.W.","contributorId":8023,"corporation":false,"usgs":true,"family":"Christensen","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":298339,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Cannon, J.B.","contributorId":15546,"corporation":false,"usgs":true,"family":"Cannon","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":298341,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Lee, D.W.","contributorId":39715,"corporation":false,"usgs":true,"family":"Lee","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":298342,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":95110,"text":"95110 - 1982 - A user's guide for the stock-recruitment model validation program","interactions":[],"lastModifiedDate":"2012-02-02T00:03:59","indexId":"95110","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"A user's guide for the stock-recruitment model validation program","docAbstract":"No abstract available at this time","language":"English","publisher":"Oak Ridge National Laboratory","publisherLocation":"Oak Ridge, TN","collaboration":"None/FC","usgsCitation":"Christensen, S., Kirk, B., and Goodyear, C., 1982, A user's guide for the stock-recruitment model validation program.","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":128369,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b16e4b07f02db6a53b2","contributors":{"authors":[{"text":"Christensen, S.W.","contributorId":8023,"corporation":false,"usgs":true,"family":"Christensen","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":298595,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirk, B.L.","contributorId":40540,"corporation":false,"usgs":true,"family":"Kirk","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":298597,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goodyear, C.P.","contributorId":11538,"corporation":false,"usgs":true,"family":"Goodyear","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":298596,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001673,"text":"1001673 - 1982 - Variability in nest survival rates and implications to nesting studies","interactions":[],"lastModifiedDate":"2017-12-29T13:17:10","indexId":"1001673","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Variability in nest survival rates and implications to nesting studies","docAbstract":"We used four reasonably large samples (83-213) of Mallard (Anas platyrhynchos) and Blue-winged Teal (A. discors) nests on an interstate highway right-of-way in southcentral North Dakota to evaluate potential biases in hatch-rate estimates. Twelve consecutive, weekly searches for nests were conducted with a cable-chain drag in 1976 and 1977. Nests were revisited at weekly intervals. Four methods were used to estimate hatch rates for the four data sets: the Traditional Method, the Mayfield Method, and two modifications of the Mayfield Method that are sometimes appropriate when daily mortality rates of nests are not constant. Hatch rates and the average age of nests at discovery declined as the interval between searches decreased, suggesting that mortality rates were not constant in our samples. An analysis of variance indicated that daily mortality rates varied with the age of nests in all four samples. Mortality was generally highest during the early laying period, moderately high during the late laying period, and lowest during incubation. We speculate that this relationship of mortality to nest age might be due to the presence of hens at nests or to differences in the vulnerability of nest sites to predation. A modification of the Mayfield Method that accounts for age-related variation in nest mortality was most appropriate for our samples. We suggest methods for conducting nesting studies and estimating nest success for species possessing similar nesting habits.
","language":"English","publisher":"American Ornithological Society","doi":"10.2307/4086023","usgsCitation":"Klett, A., and Johnson, D.H., 1982, Variability in nest survival rates and implications to nesting studies: The Auk, v. 99, no. 1, p. 77-87, https://doi.org/10.2307/4086023.","productDescription":"12 p.","startPage":"77","endPage":"87","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":480257,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/4086023","text":"Publisher Index Page"},{"id":133985,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"99","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db602bf6","contributors":{"authors":[{"text":"Klett, A.T.","contributorId":34857,"corporation":false,"usgs":true,"family":"Klett","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":311491,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Douglas H. 0000-0002-7778-6641","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":70327,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":311492,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011496,"text":"70011496 - 1982 - Chemical and light-stable isotope characteristics of waters from the Raft River geothermal area and environs, Cassia County, Idaho; Box Elder County, Utah","interactions":[],"lastModifiedDate":"2024-04-19T18:34:09.022151","indexId":"70011496","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1828,"text":"Geothermics","active":true,"publicationSubtype":{"id":10}},"title":"Chemical and light-stable isotope characteristics of waters from the Raft River geothermal area and environs, Cassia County, Idaho; Box Elder County, Utah","docAbstract":"Chemical and light-stable isotope data are presented for water samples from the Raft River geothermal area and environs. On the basis of chemical character, as defined by a trilinear plot of per cent milliequivalents, and light-stable isotope data, the waters in the geothermal area can be divided into waters that have and have not mixed with cold water. The non-mixed waters have essentially a constant value of light-stable isotopes but show a large variation in chloride content. The variation of chloride composition is not the usual pattern for deep geothermal waters, where it is normally assumed that the deep water has a single chloride composition. Different mixed waters also have hot-water sources of varying chloride composition. Plots of chloride values on cross-sections show that water circulation patterns are confused, with non-mixed waters having different chloride concentrations located in close proximity. Three models can explain the characteristics of the deep geothermal water: (1) in addition to near-surface mixing of cold and hot water, there is deep mixing of two hot waters with the same enthalpy and isotopic composition but differing chloride concentrations to produce the range of chloride concentrations found in the deep geothermal water; (2) there is a single deep hot water, and the range of chloride concentrations is produced by the water passing through a zone of highly soluble materials (most likely in the sedimentary section above the basement) in which waters have different residence times or slightly different circulation paths; (3) the varying chloride concentrations in space have been caused by varying chloride concentrations in the deep feed water through time. Some of this older water has not been flushed from the system by the natural discharge. Although one model may seem more plausible than the others, the available data do not rule out any of them. Data for water samples from the Raft River and Jim Sage Mountains show that water from these areas is probably the source for the cold mixing water determined from end-members on mixing lines. Data for water samples in the Upper Raft River Valley show that the thermal anomaly found at Almo 1 is probably not related to the Raft River geothermal area. The water is different in type as shown by its placement on a trilinear plot, and the isotopes are different enough to show that it is probably a different water. Isotopic compositions of samples from a wide area around the Raft River geothermal system indicate that the likely source of the recharge water is the southern Albion Mountains and western Raft River Mountains. The recharge area is at one end of the Narrows zone, and the geothermal area is along the Narrows zone; thus it is likely that the Narrows zone defines the circulation path.
","language":"English","publisher":"Elsevier","doi":"10.1016/0375-6505(82)90030-X","issn":"03756505","usgsCitation":"Nathenson, M., Nehring, N., Crosthwaite, E., Harmon, R., Janik, C., and Borthwick, J., 1982, Chemical and light-stable isotope characteristics of waters from the Raft River geothermal area and environs, Cassia County, Idaho; Box Elder County, Utah: Geothermics, v. 11, no. 4, p. 215-237, https://doi.org/10.1016/0375-6505(82)90030-X.","productDescription":"23 p.","startPage":"215","endPage":"237","numberOfPages":"23","costCenters":[],"links":[{"id":221117,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f547e4b0c8380cd4c157","contributors":{"authors":[{"text":"Nathenson, M.","contributorId":46632,"corporation":false,"usgs":true,"family":"Nathenson","given":"M.","email":"","affiliations":[],"preferred":false,"id":361260,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nehring, N.L.","contributorId":21157,"corporation":false,"usgs":true,"family":"Nehring","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":361259,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crosthwaite, E. G.","contributorId":83098,"corporation":false,"usgs":true,"family":"Crosthwaite","given":"E. G.","affiliations":[],"preferred":false,"id":361262,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harmon, R.S.","contributorId":6585,"corporation":false,"usgs":true,"family":"Harmon","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":361257,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Janik, C.","contributorId":82458,"corporation":false,"usgs":true,"family":"Janik","given":"C.","affiliations":[],"preferred":false,"id":361261,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Borthwick, J.","contributorId":18905,"corporation":false,"usgs":true,"family":"Borthwick","given":"J.","email":"","affiliations":[],"preferred":false,"id":361258,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70011893,"text":"70011893 - 1982 - Margaritasite: a new mineral of hydrothermal origin from the Pena Blanca uranium district, Mexico.","interactions":[],"lastModifiedDate":"2013-02-14T09:52:09","indexId":"70011893","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Margaritasite: a new mineral of hydrothermal origin from the Pena Blanca uranium district, Mexico.","docAbstract":"Margaritasite, (Cs,K,H3O)2(UO2)2V2O8.nH2O (where Cs > K, H3O and n approx 1), a 10.514, b 8.425, c 7.25 A, beta 106.01o, P21/a, Z = 2, is a newly recognized uranium ore mineral named for the Margaritas deposit, Pena Blanca uranium district, Chihuahua, Mexico, at which it was discovered. A Cs-rich analogue of carnotite, margaritasite is the natural equivalent of synthetic Cs-uranyl vanadate (A.M. 43- 799, 50-825). A fine-grained yellow mineral, it is most easily distinguished from carnotite by XRD; X-ray powder patterns (CuKalpha radiation) show that the (001) reflection of margaritasite lies at 12.7o (2theta ), while that of carnotite is found at 13.8o (2theta ). The shift of the (001) reflection in margaritasite reflects the structural changes caused when Cs occupies the sites filled by K in carnotite. Synthesis experiments indicate that margaritasite also differs from carnotite in a higher-T hydrothermal origin. Chemical analyses and XRD data for margaritasite and synthetic Cs- carnotite, and chemical analyses for rocks from Sierra Pena Blanca and vicinity, are tabulated.-J.A.Z.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Mineralogical Society of America","issn":"0003004X","usgsCitation":"Wenrich, K., Modreski, P., Zielinski, R.A., and Seeley, J.L., 1982, Margaritasite: a new mineral of hydrothermal origin from the Pena Blanca uranium district, Mexico.: American Mineralogist, v. 67, no. 11-12, p. 1273-1289.","startPage":"1273","endPage":"1289","numberOfPages":"17","costCenters":[],"links":[{"id":221324,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267367,"type":{"id":11,"text":"Document"},"url":"https://www.minsocam.org/ammin/AM67/AM67_1273.pdf"}],"volume":"67","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a51c3e4b0c8380cd6bf0e","contributors":{"authors":[{"text":"Wenrich, K. J.","contributorId":40203,"corporation":false,"usgs":true,"family":"Wenrich","given":"K. J.","affiliations":[],"preferred":false,"id":362229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Modreski, P.J.","contributorId":98335,"corporation":false,"usgs":true,"family":"Modreski","given":"P.J.","affiliations":[],"preferred":false,"id":362231,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zielinski, R. A. 0000-0002-4047-5129","orcid":"https://orcid.org/0000-0002-4047-5129","contributorId":106930,"corporation":false,"usgs":true,"family":"Zielinski","given":"R.","email":"","middleInitial":"A.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":362232,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Seeley, J. L.","contributorId":57864,"corporation":false,"usgs":true,"family":"Seeley","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":362230,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011892,"text":"70011892 - 1982 - Lead and strontium isotopes and related trace elements as genetic tracers in the Upper Cenozoic rhyolite-basalt association of the Yellowstone Plateau volcanic field","interactions":[],"lastModifiedDate":"2024-07-16T14:46:02.2975","indexId":"70011892","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Lead and strontium isotopes and related trace elements as genetic tracers in the Upper Cenozoic rhyolite-basalt association of the Yellowstone Plateau volcanic field","docAbstract":"Supported by various field geologic and petrologic data, the contents of Pb, U, Th, Rb, and Sr and the isotopic compositions of Pb and Sr for upper Cenozoic volcanic rocks of the Yellowstone Plateau volcanic field are consistent with the hypothesis of derivation of the basaltic and rhyolitic magmas by partial melting of distinct source regions in the upper mantle and lower crust, respectively. All the basalt samples analyzed but one have systematically lower values of 207Pb/204Pb and 87Sr/86Sr than the rhyolites. The values of 206Pb/204Pb are smaller, and 87Sr/86Sr are mostly larger than known values in oceanic basalts. In all but one case, the values of 207Pb/204Pb are higher than expected from an extrapolation of known values in oceanic basalts to less radiogenic values of 206Pb/204Pb. Because there are no xenoliths, phenocrysts are only moderate to sparse in abundance, REE patterns are low and flat at the radiogenic end of lead isotopic compositions, several values of Rb/Sr are low, and 80% of the basalt samples form a well-developed secondary isochron separate from the rhyolites, we favor an interpretation for basalt genesis wherein isotopic signatures of most mafic magmas were attained in a continental ‘keel’ of mantlelike character about 2.6 b.y. old or somewhat older attached to the crust, and these signatures were unaltered by magma passage through the crust. At the very least, the current data continue to cast serious doubt as to the inevitability of crustal contamination for basaltic magma intruding the continental environment and postulate that much can be learned about the mantle under continents through the study of continental basalts. One basalt unit with an unusually low value of 207Pb/204Pb and an 87Ar/86Ar less than 0.704 may represent subcontinental ‘keel’-derived magma that rose unaltered to the surface. Our data also are not consistent with formation of this rhyolite-basalt association primarily by such processes as crystal fractionation, separation of immiscible silicate liquids from a common parental magma, or fractional melting of a homogeneous source. Rather as a conceptual model, we envision large mafic intrusions to have been injected into the lower crust resulting in rhyolite generation through partial anatexis of the adjacent wall rocks which probably had a 206Pb/204Pb < 17 and 87Sr/86Sr > 0.709; a model that has much in common with that proposed by Holmes (1931). All the other hypotheses listed have the necessary added complication that either the basalt or the rhyolite or both become contaminated after the two magma types separated, have problems accounting for the lack of igneous rocks of intermediate compositions or production of such large volumes of rhyolitic material (∼5000 km3), and fail to explain why rhyolitic magma is not a more common occurrence in the ocean basin. We appeal to bouyancy of rhyolites to generate a barrier for basalt magma migration and account for the great preponderance of rhyolite relative to basalt at the surface. Furthermore, the complex isotopic picture in the rhyolites indicates that many of these magmas interacted with the upper crustal geologic units that they traversed. The interactions involved diverse processes, probably including reacton with hydrothermal fluids or hydrothermally altered rocks at high levels as well as by contamination with Phanerozoic sedimentary and Precambrian crystalline rocks at deeper levels. At the very least, we feel our study adds a cautionary note to the currently increasingly popular hypothesis that differentiation of basalt or gabbro magmas to rhyolite or granite (as distinct from tonalite or dacite) is a common occurrence and is therefore an important continential building process. Models for formation of rhyolite and granite predominantly by reworking of crust (anatexis) must still be considered. The primitive Archean mantle of the region was characterized by higher Rb/Sr, U/Pb, and Th/U values than are typical of modern suboceanic mantle. The mantle residuum within the continental subcrustal lithosperic ‘keel’ that resulted from the Archean crustal differentiation event probably was depleted in Rb/Sr and U/Pb, and the crust was correspondingly enriched in these ratios. The crust probably was further differentiated by an Archean high-grade metamorphism, during or after the primary event, into a granulitic lower crust depleted in U/Pb and Rb/Sr and a lower-grade upper crust enriched in these ratios.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB06p04785","issn":"01480227","usgsCitation":"Doe, B.R., Leeman, W., Christiansen, R., and Hedge, C., 1982, Lead and strontium isotopes and related trace elements as genetic tracers in the Upper Cenozoic rhyolite-basalt association of the Yellowstone Plateau volcanic field: Journal of Geophysical Research Solid Earth, v. 87, no. B6, p. 4785-4806, https://doi.org/10.1029/JB087iB06p04785.","productDescription":"22 p.","startPage":"4785","endPage":"4806","numberOfPages":"22","costCenters":[],"links":[{"id":221323,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a45ade4b0c8380cd67474","contributors":{"authors":[{"text":"Doe, B. R.","contributorId":52173,"corporation":false,"usgs":true,"family":"Doe","given":"B.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362227,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Leeman, W.P.","contributorId":7841,"corporation":false,"usgs":true,"family":"Leeman","given":"W.P.","affiliations":[],"preferred":false,"id":362225,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christiansen, R.L. 0000-0002-8017-3918","orcid":"https://orcid.org/0000-0002-8017-3918","contributorId":25565,"corporation":false,"usgs":true,"family":"Christiansen","given":"R.L.","affiliations":[],"preferred":false,"id":362226,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hedge, C. E.","contributorId":73611,"corporation":false,"usgs":true,"family":"Hedge","given":"C. E.","affiliations":[],"preferred":false,"id":362228,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011880,"text":"70011880 - 1982 - Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis","interactions":[],"lastModifiedDate":"2024-07-16T14:47:54.258421","indexId":"70011880","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis","docAbstract":"Seismic refraction data with a dense areal distribution were collected to study the seismic structure of Mount Hood and the surrounding region. This area is typical of Cascade volcanoes and is geologically quite complex. The prime goals of this project were to search for velocity variations in the upper crustal rocks and to determine if the velocity of these rocks is anisotropic. A new system, including 100 remote recording units, was developed to facilitate the collection of data in this type of survey. The data collected in this study reveal a large variation in velocity and thickness of the uppermost crustal rocks that is probably typical of the High Cascade province. A regional structural pattern surrounding Mount Hood, where there is a marked thinning of low-velocity near-surface rocks, suggests that the present edifice of Mount Hood lies on top of a much larger structure, possibly the roof of a large batholith that was emplaced prior to the eruption of the volcanic rocks that form the modern mountain. A straightforward time term analysis of the data reveals this structure. When the time terms are used to correct the travel time observations for the variation in structure under each station, the remaining set of residuals indicates a variation of travel time with azimuth. While a systematic error in the time term reduction cannot be ruled out, this variation is probably the result of anisotropic velocity structure in the underlying refractor. The alignment of the direction of maximum velocity with the direction of maximum principal stress and the decrease in anisotropy with depth suggest that the anisotropic velocity structure is related to the opening and closing of fractures in the present stress field. The direction of maximum velocity is about N25°W, and the degree of anisotropy appears to vary with depth from about 3% near the surface to zero at depths below 8 km.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB01p00339","issn":"01480227","usgsCitation":"Kohler, W., Healy, J.H., and Wegener, S., 1982, Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis: Journal of Geophysical Research Solid Earth, v. 87, no. B1, p. 339-355, https://doi.org/10.1029/JB087iB01p00339.","productDescription":"17 p.","startPage":"339","endPage":"355","numberOfPages":"17","costCenters":[],"links":[{"id":221135,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B1","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bbd56e4b08c986b328f8e","contributors":{"authors":[{"text":"Kohler, W.M.","contributorId":62999,"corporation":false,"usgs":true,"family":"Kohler","given":"W.M.","email":"","affiliations":[],"preferred":false,"id":362190,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Healy, J. H.","contributorId":48968,"corporation":false,"usgs":true,"family":"Healy","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":362189,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wegener, S.S.","contributorId":67654,"corporation":false,"usgs":true,"family":"Wegener","given":"S.S.","email":"","affiliations":[],"preferred":false,"id":362191,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011876,"text":"70011876 - 1982 - International geomagnetic reference field 1980: a report by IAGA Division I working group.","interactions":[],"lastModifiedDate":"2013-03-12T11:29:10","indexId":"70011876","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1804,"text":"Geophysical Journal of the Royal Astronomical Society","active":true,"publicationSubtype":{"id":10}},"title":"International geomagnetic reference field 1980: a report by IAGA Division I working group.","docAbstract":"Describes the recommendations of the working group, which suggested additions to IGRF because of the cumulative effect of the inevitable uncertainties in the secular variation models which had led to unacceptable inaccuracies in the IGRF by the late 1970's. The recommendations were accepted by the International Association of Geomagnetism and Aeronomy on August 15, 1981 at the 4th Scientific Assembly, Edinburgh. An extended table sets out spherical harmonic coefficients of the IGRF 1980.-R.House","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal of the Royal Astronomical Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1111/j.1365-246X.1982.tb06974.x","usgsCitation":"Peddie, N., 1982, International geomagnetic reference field 1980: a report by IAGA Division I working group.: Geophysical Journal of the Royal Astronomical Society, v. 68, no. 1, p. 265-268, https://doi.org/10.1111/j.1365-246X.1982.tb06974.x.","startPage":"265","endPage":"268","numberOfPages":"4","costCenters":[],"links":[{"id":221067,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269144,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.1982.tb06974.x"}],"volume":"68","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3d3be4b0c8380cd633e4","contributors":{"authors":[{"text":"Peddie, N.W.","contributorId":75911,"corporation":false,"usgs":true,"family":"Peddie","given":"N.W.","affiliations":[],"preferred":false,"id":362180,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011862,"text":"70011862 - 1982 - Huge landslide blocks in the growth of piton de la fournaise, La réunion, and Kilauea volcano, Hawaii","interactions":[],"lastModifiedDate":"2015-06-10T13:12:35","indexId":"70011862","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Huge landslide blocks in the growth of piton de la fournaise, La réunion, and Kilauea volcano, Hawaii","docAbstract":"Piton de la Fournaise, on the island of La Réunion, and Kilauea volcano, on the island of Hawaii, are active, basaltic shield volcanoes growing on the flanks of much larger shield volcanoes in intraplate tectonic environments. Past studies have shown that the average rate of magma production and the chemistry of lavas are quite similar for both volcanoes. We propose a structural similarity — specifically, that periodic displacement of parts of the shields as huge landslide blocks is a common mode of growth. In each instance, the unstable blocks are within a rift-zone-bounded, unbuttressed flank of the shield. At Kilauea, well-documented landslide blocks form relatively surficial parts of a much larger rift-zone-bounded block; scarps of the Hilina fault system mark the headwalls of the active blocks. At Fournaise, Hilina-like slump blocks are also present along the unbuttressed east coast of the volcano. In addition, however, the existence of a set of faults nested around the present caldera and northeast and southeast rift zones suggests that past chapters in the history of Fournaise included the slumping of entire rift-zone-bounded blocks themselves. These nested faults become younger to the east southeast and apparently record one of the effects of a migration of the focus of volcanism in that direction. Repeated dilation along the present set of northeast and southeast rift zones, most recently exemplified by an eruption in 1977, suggests that the past history of rift-zone-bounded slumping will eventually be repeated. The record provided by the succession of slump blocks on Fournaise is apparently at a relatively detailed part of a migration of magmatic focus that has advanced at least 30 km to the east-southeast from neighboring Piton des Neiges, an extinct Pliocene to Pleistocene volcano.?? 1982.
","language":"English","publisher":"Elsevier","doi":"10.1016/0377-0273(82)90009-9","issn":"03770273","usgsCitation":"Duffield, W.A., Stieltjes, L., and Varet, J., 1982, Huge landslide blocks in the growth of piton de la fournaise, La réunion, and Kilauea volcano, Hawaii: Journal of Volcanology and Geothermal Research, v. 12, no. 1-2, p. 147-160, https://doi.org/10.1016/0377-0273(82)90009-9.","productDescription":"14 p.","startPage":"147","endPage":"160","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":220863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3274e4b0c8380cd5e803","contributors":{"authors":[{"text":"Duffield, Wendell A.","contributorId":14363,"corporation":false,"usgs":true,"family":"Duffield","given":"Wendell","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362143,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stieltjes, Laurent","contributorId":99287,"corporation":false,"usgs":true,"family":"Stieltjes","given":"Laurent","email":"","affiliations":[],"preferred":false,"id":362145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Varet, Jacques","contributorId":88877,"corporation":false,"usgs":true,"family":"Varet","given":"Jacques","email":"","affiliations":[],"preferred":false,"id":362144,"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":70011450,"text":"70011450 - 1982 - Landsat monitoring of desert vegetation growth, 1972-1979 using a plant-shadowing model","interactions":[],"lastModifiedDate":"2013-01-20T09:18:10","indexId":"70011450","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":"Landsat monitoring of desert vegetation growth, 1972-1979 using a plant-shadowing model","docAbstract":"Landsat digital data spanning the period 1972-1979 were analyzed to monitor the status of vegetation within and outside an exclosure in the northern Sinai (precipitation 100-150 mm/year). This 6??6 km exclosure was fenced off in the summer of 1974 and subsequently has been free from the anthropogenic pressures (overgrazing, cultivation in small fields, and harvesting of dry plants as firewood) that continued outside the exclosure. The recovery of the ecosystem within the exclosure is monitored applying a previously tested model. The model quantitatively describes the reduction in the reflectivity to zenith due to shadowing effects by mostly vertical plants. The darkening (reduction in the reflectivity) in the exclosure was compared to the status before the fencing-off and to the essentially unchanging bare sands outside the exclosure. The vegetation protrusion parameter s (sum of the products of plant height times diameter for a unit area of the surface), calculated from Landsat digital data for the exclosure, increased from essentially zero in 1972 and 1973 to about 0.18 in 1975 and changed only within narrow limits from 1975 to 1979. The s value of 0.18 indicates that if the clumps of the plants protruding from the surface in the exclosure were laid horizontally on the soil, they would cover 18 percent of the area. This parameter provides a quantitative measure of the condition of the ecosystem, but the relation to the total green and/or brown biomass remains to be determined. ?? 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)90219-8","issn":"02731177","usgsCitation":"Otterman, J., and Robinove, C., 1982, Landsat monitoring of desert vegetation growth, 1972-1979 using a plant-shadowing model: Advances in Space Research, v. 2, no. 8, p. 45-50, https://doi.org/10.1016/0273-1177(82)90219-8.","startPage":"45","endPage":"50","numberOfPages":"6","costCenters":[],"links":[{"id":221524,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266024,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0273-1177(82)90219-8"}],"volume":"2","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a43ece4b0c8380cd666d8","contributors":{"authors":[{"text":"Otterman, Joseph","contributorId":75683,"corporation":false,"usgs":true,"family":"Otterman","given":"Joseph","email":"","affiliations":[],"preferred":false,"id":361145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robinove, C.J.","contributorId":68778,"corporation":false,"usgs":true,"family":"Robinove","given":"C.J.","affiliations":[],"preferred":false,"id":361144,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011242,"text":"70011242 - 1982 - Assessment of models proposed for the 1981 revision of the IGRF","interactions":[],"lastModifiedDate":"2024-04-25T11:20:18.426624","indexId":"70011242","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2310,"text":"Journal of Geomagnetism & Geoelectricity","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of models proposed for the 1981 revision of the IGRF","docAbstract":"For the second revision of the International Geomagnetic Reference Field (IGRF), the U. S. National Aeronautics and Space Administration (NASA), the U. K. Institute of Geological Sciences (IGS), and the U. S. Geological Survey (USGS) submitted proposed models of the Earth's main magnetic field at 1965.0, 1970.0, 1975.0, and 1980.0, and its secular variation during 1980-1985. We assessed the proposed models by comparing them with annual mean values from worldwide magnetic observatories, data for 1978-1980 from 63 U. S. magnetic repeat stations, and rates-of-change values for worldwide magnetic observatories for 1965-1985 that were derived from straight lines fitted to annual means for five-year intervals. We also mutually compared the 1980 models.
Errors in runoff prediction caused by input data errors are analyzed by treating precipitation-runoff models as regression (conditional expectation) models. Independent variables of the regression consist of precipitation and other input measurements; the dependent variable is runoff. In models using erroneous input data, prediction errors are inflated and estimates of expected storm runoff for given observed input variables are biased. This bias in expected runoff estimation results in biased parameter estimates if these parameter estimates are obtained by a least squares fit of predicted to observed runoff values. The problems of error inflation and bias are examined in detail for a simple linear regression of runoff on rainfall and for a nonlinear U.S. Geological Survey precipitation-runoff model. Some implications for flood frequency analysis are considered. A case study using a set of data from Turtle Creek near Dallas, Texas illustrates the problems of model input errors.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i004p00947","usgsCitation":"Troutman, B.M., 1982, An analysis of input errors in precipitation-runoff models using regression with errors in the independent variables: Water Resources Research, v. 18, no. 4, p. 947-964, https://doi.org/10.1029/WR018i004p00947.","productDescription":"18 p.","startPage":"947","endPage":"964","costCenters":[],"links":[{"id":221434,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","city":"Dallas","otherGeospatial":"Turtle Creek","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -96.81529998779297,\n 32.79275826977453\n ],\n [\n -96.78749084472655,\n 32.79275826977453\n ],\n [\n -96.78749084472655,\n 32.85132662142229\n ],\n [\n -96.81529998779297,\n 32.85132662142229\n ],\n [\n -96.81529998779297,\n 32.79275826977453\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"18","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"5059e9f0e4b0c8380cd4853d","contributors":{"authors":[{"text":"Troutman, Brent M.","contributorId":195329,"corporation":false,"usgs":false,"family":"Troutman","given":"Brent","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":360648,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011861,"text":"70011861 - 1982 - Benthic phosphorus regeneration in the Potomac River Estuary","interactions":[],"lastModifiedDate":"2012-03-12T17:18:33","indexId":"70011861","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Benthic phosphorus regeneration in the Potomac River Estuary","docAbstract":"The flux of dissolved reactive phosphate from Potomac riverine and estuarine sediments is controlled by processes occurring at the water-sediment interface and within surficial sediment. In situ benthic fluxes (0.1 to 2.0 mmoles m-2 day-1) are generally five to ten times higher than calculated diffusive fluxes (0.020 to 0.30 mmoles m-2 day-1). The discrepancy between the two flux estimates is greatest in the transition zone (river mile 50 to 70) and is attributd to macrofaunal irrigation. Both in situ and diffusive fluxes of dissolved reactive phosphate from Potomac tidal river sediments are low while those from anoxic lower estuarine sediments are high. The net accumulation rate of phosphorus in benthic sediment exhibits an inverse pattern. Thus a large fraction of phosphorus is retained by Potomac tidal river sediments, which contain a surficial oxidized layer and oligochaete worms tolerant of low oxygen conditions, and a large fraction of phosphorus is released from anoxic lower estuary sediments. Tidal river sediment pore waters are in equilibrium with amorphous Fe (OH)3 while lower estuary pore waters are significantly undersaturated with respect to this phase. Benthic regeneration of dissolved reactive phosphorus is sufficient to supply all the phosphorus requirements for net primary production in the lower tidal river and transition-zone waters of the Potomac River Estuary. Benthic regeneration supplies approximately 25% as much phosphorus as inputs from sewage treatment plants and 10% of all phosphorus inputs to the tidal Potomac River. When all available point source phosphorus data are put into a steady-state conservation of mass model and reasonable coefficients for uptake of dissolved phosphorus, remineralization of particulate phosphorus, and sedimentation of particulate phosphorus are used in the model, a reasonably accurate simulation of dissolved and particulate phosphorus in the water column is obtained for the summer of 1980. ?? 1982 Dr W. Junk Publishers.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00000042","issn":"00188158","usgsCitation":"Callender, E., 1982, Benthic phosphorus regeneration in the Potomac River Estuary: Hydrobiologia, v. 91-92, no. 0, p. 431-446, https://doi.org/10.1007/BF00000042.","startPage":"431","endPage":"446","numberOfPages":"16","costCenters":[],"links":[{"id":205067,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00000042"},{"id":220862,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91-92","issue":"0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f0c2e4b0c8380cd4a8ce","contributors":{"authors":[{"text":"Callender, E.","contributorId":72528,"corporation":false,"usgs":true,"family":"Callender","given":"E.","email":"","affiliations":[],"preferred":false,"id":362142,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011453,"text":"70011453 - 1982 - A model for managing sources of groundwater pollution","interactions":[],"lastModifiedDate":"2018-02-05T13:19:13","indexId":"70011453","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":"A model for managing sources of groundwater pollution","docAbstract":"The waste disposal capacity of a groundwater system can be maximized while maintaining water quality at specified locations by using a groundwater pollutant source management model that is based upon linear programing and numerical simulation. The decision variables of the management model are solute waste disposal rates at various facilities distributed over space. A concentration response matrix is used in the management model to describe transient solute transport and is developed using the U.S. Geological Survey solute transport simulation model. The management model was applied to a complex hypothetical groundwater system. Large-scale management models were formulated as dual linear programing problems to reduce numerical difficulties and computation time. Linear programing problems were solved using a numerically stable, available code. Optimal solutions to problems with successively longer management time horizons indicated that disposal schedules at some sites are relatively independent of the number of disposal periods. Optimal waste disposal schedules exhibited pulsing rather than constant disposal rates. Sensitivity analysis using parametric linear programing showed that a sharp reduction in total waste disposal potential occurs if disposal rates at any site are increased beyond their optimal values.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i004p00773","usgsCitation":"Gorelick, S.M., 1982, A model for managing sources of groundwater pollution: Water Resources Research, v. 18, no. 4, p. 773-781, https://doi.org/10.1029/WR018i004p00773.","productDescription":"9 p.","startPage":"773","endPage":"781","costCenters":[],"links":[{"id":221527,"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":"5059e46ae4b0c8380cd46652","contributors":{"authors":[{"text":"Gorelick, Steven M.","contributorId":8784,"corporation":false,"usgs":true,"family":"Gorelick","given":"Steven","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":361154,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"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.
In August 1981 the International Association of Geomagnetism and Aeronomy revised the International Geomagnetic Reference Field (IGRF). It is the second revision since the inception of the IGRF in 1968. The revision extends the earlier series of IGRF models from 1980 to 1985, introduces a new series of definitive models for 1965-1975, and defines a provisional reference field for 1975-1980. The revision consists of: (1) a model of the main geomagnetic field at 1980.0, not continuous with the earlier series of IGRF models, together with a forecast model of the secular variation of the main field during 1980-1985; (2) definitive models of the main field at 1965.0, 1970.0, and 1975.0, with linear interpolation of the model coefficients specified for intervening dates; and (3) a provisional reference field for 1975-1980, defined as the linear interpolation of the 1975 and 1980 main-field models. The new models are series of solid spherical harmonics up to and including the tenth degree and order for the main-field models, and up to and including the eighth degree and order for the secular variation model. The models were derived from three sets of proposed models by taking weighted means. The weights were chosen according to the apparent accuracy of the proposed models. A brief history of the IGRF, a review of basic formulas, and a set of world contour maps of the geomagnetic elements based on the IGRF 1980 model are included.
Unbiasing factors as a function of serial correlation, ρ, and sample size, n for the sample standard deviation of a lag one autoregressive model were generated by random number simulation. Monte Carlo experiments were used to compare the performance of several alternative methods for estimating the standard deviation σ of a lag one autoregressive model in terms of bias, root mean square error, probability of underestimation, and expected opportunity design loss. Three methods provided estimates of σ which were much less biased but had greater mean square errors than the usual estimate of σ: s = (1/(n - 1) ∑ (xi −x¯)2)½. The three methods may be briefly characterized as (1) a method using a maximum likelihood estimate of the unbiasing factor, (2) a method using an empirical Bayes estimate of the unbiasing factor, and (3) a robust nonparametric estimate of σ suggested by Quenouille. Because s tends to underestimate σ, its use as an estimate of a model parameter results in a tendency to underdesign. If underdesign losses are considered more serious than overdesign losses, then the choice of one of the less biased methods may be wise.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i005p01503","usgsCitation":"Tasker, G.D., and Gilroy, E.J., 1982, Comparison of estimators of standard deviation for hydrologic time series: Water Resources Research, v. 18, no. 5, p. 1503-1508, https://doi.org/10.1029/WR018i005p01503.","productDescription":"6 p.","startPage":"1503","endPage":"1508","costCenters":[],"links":[{"id":221166,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"5","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"5059f862e4b0c8380cd4d077","contributors":{"authors":[{"text":"Tasker, Gary D.","contributorId":83097,"corporation":false,"usgs":true,"family":"Tasker","given":"Gary","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":360759,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gilroy, Edward J.","contributorId":50524,"corporation":false,"usgs":true,"family":"Gilroy","given":"Edward","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":360758,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011482,"text":"70011482 - 1982 - Extension in the Rio Grande rift","interactions":[],"lastModifiedDate":"2024-07-16T15:09:07.736725","indexId":"70011482","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Extension in the Rio Grande rift","docAbstract":"A positive gravity anomaly along the axis of the Rio Grande rift reflects a volume of anomalous mass added at the base of the crust and intruded into the crust. Part of this volume can be associated with vertical uplift of the crust. The remainder of this anomalous volume, plus the volume of surficial graben fill, can be associated with horizontal crustal extension. The volume of crustal uplift in the Rio Grande rift is unknown, but this term can be eliminated by means of an independent equation provided by assumption of generalized isostatic equilibrium. The volume and mass equations combined provide a solution for extension of the crust in terms of the following parameters: total anomalous mass deficiency in the mantle lithosphere, total anomalous mass excess in the crust and its density contrast, total anomalous mass deficiency of surficial graben fill and its density contrast, and the volume of material eroded from the uplift. Using standard density estimates and masses determined by equivalent-source modeling of gravity profiles, I obtained 1-km extension at 37°N (Colorado-New Mexico border), 13-km extension at 35°N (Albuquerque, New Mexico), and 24-km extension at 33°N in southern New Mexico. These estimates are of necessity very poorly constrained and may be as much as ±60% in error. Taking results at face value, the best fitting Euler pole occurs at about 41°N, in north central Colorado. The calculated opening angle is 1.32°. For an approximately 30-m.y. duration of the extensional system (late Oligocene to the present), calculated average angular velocity is 7.8×10−4 rad/m.y.; calculated average spreading half-rate at 33°N (for example) is a stately 0.04 cm/yr. The ratio of extension to uplift increases southward.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB10p08561","issn":"01480227","usgsCitation":"Cordell, L., 1982, Extension in the Rio Grande rift: Journal of Geophysical Research Solid Earth, v. 87, no. B10, p. 8561-8569, https://doi.org/10.1029/JB087iB10p08561.","productDescription":"9 p.","startPage":"8561","endPage":"8569","numberOfPages":"9","costCenters":[],"links":[{"id":220841,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B10","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a0e42e4b0c8380cd5338a","contributors":{"authors":[{"text":"Cordell, L.","contributorId":84901,"corporation":false,"usgs":true,"family":"Cordell","given":"L.","affiliations":[],"preferred":false,"id":361217,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011843,"text":"70011843 - 1982 - Preliminary model of regional Mesozoic groundwater flow and uranium deposition in the Colorado Plateau.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:05","indexId":"70011843","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":"Preliminary model of regional Mesozoic groundwater flow and uranium deposition in the Colorado Plateau.","docAbstract":"Qualitative and numerical simulation of regional groundwater flow in the Colorado Plateau during Late Jurassic and Early Cretaceous time has led to a model of U deposition in areas of upwelling solutions. Palaeographic reconstruction shows that surface drainage and groundwater flow was generally to the NE and E. Groundwater flowing in these directions, principally through Triassic-Jurassic and Permian sandstones, encountered sediments of variable thickness due to buried uplifted or downdropped Precambrian blocks. The buried uplifted blocks caused upward movement of groundwater around them. These inferred zones of upwelling are closely associated with concentrations of Jurassic- and Cretaceous-age U deposits. The results are consistent with hypotheses of an upwelling brine mixing and reacting with descending meteoric water and causing U precipitation at the fluid interface. Whether the U came from above or below the interface is an unsolved problem.-A.P.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00917613","usgsCitation":"Sanford, R., 1982, Preliminary model of regional Mesozoic groundwater flow and uranium deposition in the Colorado Plateau.: Geology, v. 10, no. 7, p. 348-352.","startPage":"348","endPage":"352","numberOfPages":"5","costCenters":[],"links":[{"id":221615,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8930e4b0c8380cd7dd1d","contributors":{"authors":[{"text":"Sanford, R.F.","contributorId":38562,"corporation":false,"usgs":true,"family":"Sanford","given":"R.F.","email":"","affiliations":[],"preferred":false,"id":362092,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011464,"text":"70011464 - 1982 - The modified polyconic projection for the IMW","interactions":[],"lastModifiedDate":"2023-09-01T16:48:19.139483","indexId":"70011464","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1189,"text":"Cartographica: The International Journal for Geographic Information and Geovisualization","active":true,"publicationSubtype":{"id":10}},"title":"The modified polyconic projection for the IMW","docAbstract":"The modified Polyconic map projection designed by Lallemand and adopted for the International Map of the World between 1909 and 1962 has two meridians and two parallels which are true to scale. Constructed geometrically in the past, forward and inverse coordinate transformations may be calculated analytically in order to transfer data from existing quadrangles to other maps. The equations for these transformations are derived and used to calculate representative tables of coordinates andscale factors. Although the projection is neither equal-area nor conformai, scale does not vary more than 0.06% throughout the quadrangle.
","language":"English","publisher":"University of Toronto Press","doi":"10.3138/557H-7263-01X6-072L","usgsCitation":"Snyder, J., 1982, The modified polyconic projection for the IMW: Cartographica: The International Journal for Geographic Information and Geovisualization, v. 19, no. 3-4, p. 31-43, https://doi.org/10.3138/557H-7263-01X6-072L.","productDescription":"13 p.","startPage":"31","endPage":"43","numberOfPages":"13","costCenters":[],"links":[{"id":221669,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bade1e4b08c986b323e41","contributors":{"authors":[{"text":"Snyder, John P.","contributorId":16878,"corporation":false,"usgs":true,"family":"Snyder","given":"John P.","affiliations":[],"preferred":false,"id":361177,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":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}]}} ]}