B.E. Kus
1991, Report
No abstract available at this time...
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Publication Extents
Not all publications have extents, not all extents are completely accurateW.I. Boarman
1991, Report
No abstract available at this time...
B.E. Kus
1991, Report
No abstract available at this time...
P. Francis
1991, Earthquakes & Volcanoes (USGS) (22) 151-153
AS a teenager, I spent many long, bone-chilling hours studying the Moon and the planets with a rickety, homemade telescope. After 30 years, I still recall the pain and pleasure of creeping illicitly out of the house in the small hours of the morning for the few moments of satisfaction...
Alfred Truesdell
1991, Conference Paper, Transactions - Geothermal Resources Council
Acid fluids in geothermal reservoirs are rare. Their occurrence in geothermal systems associated with recent volcanism (Tatun, Sumikawa, Miravalles) probably indicates that the geothermal reservoir fluid was derived from volcanic fluid incompletely neutralized by reaction with feldspars and micas. Superheated steam containing HCl (Larderello, The Geysers) forms acid where it...
S.J. Goldstein, M.T. Murrell, D.R. Janecky, J.R. Delaney, D.A. Clague
1991, Earth and Planetary Science Letters (107) 25-41
A highly precise mass spectrometric method of analysis was used to determine238U234U230Th232Th in axial and off-axis basalt glasses from Juan de Fuca (JDF) and Gorda ridges. Initial 230Th activity excesses in the axial samples range from 3 to 38%,...
Charles G. Crawford, David J. Wangsness
1991, Water Resources Bulletin (27) 769-779
In 1983, the City of Indianapolis, Indiana, completed construction of advanced wastewater treatment (AWT) systems to enlarge and upgrade its existing Belmont Road and Southport Road secondary treatment plants. A nonparametric statistical procedure, a modified form of the Wilcoxon-Mann-Whitney rank-sum test, was used to test for trends in water quality...
L. A. Wald, T. H. Heaton
1991, Journal of Geophysical Research (96) 12099-12125
We investigate Lg and Rg propagation in California using the central and southern California regional networks. Approximately 550 stations constitute these two short-period networks providing a dense coverage of almost the entire state. The waveforms recorded from the December 23, 1985, Nahanni, Canada, earthquake are used to construct three...
Jeffrey H. List
1991, Coastal Engineering (15) 475-496
This paper proposes a new definition of the groupiness factor, GF, based on the envelope of the incident-wave time series. It is shown that an envelope-based GF has several important advantages over the SIWEH-based groupiness factor, including objective criteria for determining the accuracy of the envelope function and well-defined numerical limits.Using this new GF,...
L.C. Kjelstrom
1991, Journal of Irrigation and Drainage Engineering (117) 748-757
Methods of measuring volumes of water withdrawn from the Snake River and its tributaries and pumped through closed‐conduit irrigation systems were needed for equitable management of and resolution of conflicts over water use. On the basis of evaluations and field tests by researchers from the University of Idaho, Water Resources...
Bruch S. Hemingway
1991, Geochimica et Cosmochimica Acta (55) 3873-3874
[No abstract available]...
R. E. Kayen, H.J. Lee
1991, Marine Geotechnology (10) 125-141
In oceanic areas underlain by sediment with gas hydrate, reduction of sea level initiates disassociation along the base of the gas hydrate, which, in turn, causes the release of large volumes of gas into the sediment and creates excess pore-fluid pressures and reduced slope stability. Fluid diffusion properties dominate the...
G. L. Feder, Z. Radovanovic, R. B. Finkelman
1991, Conference Paper, Kidney International
Field studies in epidemiology and environmental geochemistry in areas in Yugoslavia containing villages with a high incidence of Balkan endemic nephropathy (BEN), indicate a possible relationship between the presence of low-rank coal deposits and the etiology of BEN. Preliminary results from qualitative chemical analyses of drinking water from shallow farm...
J. L. Bischoff, D.B. Herbst, R.J. Rosenbauer
1991, Geochimica et Cosmochimica Acta (55) 1743-1747
The salinity of Mono Lake has steadily increased since 1941 from 50%. to about 90%. due to diversion of tributary streams. This increase has resulted in the newly discovered precipitation of gaylussite (Na2Ca(CO3)2 · 5H2O). Chemical modeling of the lake water using Pitzer equations suggests that gaylussite has been forming year...
Karolien Debusschere, Shea Penland, Karen A. Westphal, P. Douglas Reimer, Randolph A. McBride
1991, Conference Paper, Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management
An aerial geomorphic mapping system was developed to examine the spatial and temporal variability in the coastal geomorphology of Louisiana. Between 1984 and 1990 eleven sequential annual and post-hurricane aerial videotape surveys were flown covering periods of prolonged fair weather, hurricane impacts and subsequent post-storm recoveries. A coastal geomorphic classification...
A.E. Godfrey, E.T. Cleaves
1991, Environmental Geology and Water Sciences (17) 141-155
Numerous systems of land classification have been proposed. Most have led directly to or have been driven by an author's philosophy of earth-forming processes. However, the practical need of classifying land for planning and management purposes requires that a system lead to predictions of the results of management activities. We...
C.S. Spirakis
1991, Mineralium Deposita (26) 60-65
The precipitation of extremely 34S-rich barite in the late stage of mineralization in the Mississippi Valleytype deposits of the Illinois-Kentucky district (U.S.A.) may be explained by reactions involving thiosulfate (S2O3=). Inorganic processes are known to concentrate 34S in the sulfonate site of thiosulfate and 32S in the sulfate site. In...
G. R. Himmelberg, D. A. Brew, A. B. Ford
1991, Journal of Metamorphic Geology (9) 165-180
An inverted metamorphic gradient is preserved in the western metamorphic belt near Juneau, Alaska. The western metamorphic belt is part of the Coast plutonic–metamorphic complex of western Canada and southeastern Alaska that developed as a result of tectonic overlap and/or compressional thickening of crustal rocks during collision of the Alexander...
S.R. Bohlen
1991, Journal of Metamorphic Geology (9) 223-229
The tectonic settings for the formation and evolution of regional granulite terranes and the lowermost continental crust can be deduced from pressure–temperature–time (P–T–time) paths and constrained by petrological and geophysical considerations.P–T conditions deduced for regional granulites require transient, average geothermal gradients of greater than 35°C km−1, implying minimum heat flow in...
K.S. Johnson
1991, Environmental Geology and Water Sciences (17) 3-7
The Oklahoma Geological Survey has developed several maps and reports for preliminary screening of the state of Oklahoma to identify areas that are generally acceptable or unacceptable for disposal of a wide variety of waste materials. These maps and reports focus on the geologic and hydrogeologic parameters that must be...
W.M. Alley, P. Cohen
1991, Environmental Geology and Water Sciences (17) 17-22
Beginning in 1986, the U.S. Geological Survey began an effort to develop a National Water-Quality Assessment Program. The basic premise underlying this initiative is that a better understanding of the quality of water resources across the country, both surface- and groundwater, is needed to develop effective programs and policies to...
J. A. Allen, R. Boykin
1991, Restoration & Management Notes (9) 122-124
Various methods of nutria preventative techniques were tested in attempts to curb the loss of seedlings due to nutria capturing. The results of testing possibly indicate that tree shelters have real potential for use in forest restoration projects on sites with moderate nutria populations. Tree shelters may even prove effective...
Anthony A. Lizzio, Massoud Rostam-Abadi
1991, Conference Paper, Extended Abstracts and Program - Biennial Conference on Carbon
Chars were produced from an Illinois No. 2 bituminous coal under various pyrolysis and activation conditions and tested for their molecular sieve properties. The amount of N2 compared to the amount of CO2 adsorbed by each char was used as a preliminary indicator of its molecular sieve properties. This relatively...
L.J. Poppe, J.A. Commeau, P. C. Valentine
1991, Journal of Sedimentary Petrology (61) 54-64
The silt-sized heavy mineral assemblage, which is predominantly detrital, has been concentrated in this fraction by hydraulic factors and ranges between 11.8 wt. % of the silt fraction in the sandy sediments near Georges Bank to 3.4% in the clayey silt deposit south of Martha's Vineyard. By contrast, the sand...
Jon E. Keeley
1991, Natural History (1991) 82-85
Review of: Burning Bush: A Fire History of Australia, by Stephen J. Pyne. Henry Holt and Company, $27.95; 497 pp.. illus....