Hydrology of Yucca Mountain, Nevada
A. L. Flint, L. E. Flint, E. M. Kwicklis, G.S. Bodvarsson, J. M. Fabryka-Martin
2001, Reviews of Geophysics (39) 447-470
Yucca Mountain, located in southern Nevada in the Mojave Desert, is being considered as a geologic repository for high-level radioactive waste. Although the site is arid, previous studies indicate net infiltration rates of 5-10 mm yr-1 under current climate conditions. Unsaturated flow of water through the mountain generally is vertical...
Dips, ramps, and rolls- Evidence for paleotopographic and syn-depositional fault control on the Western Kentucky No. 4 coal bed, tradewater formation (Bolsovian) Illinois Basin
S.F. Greb, C.F. Eble, D.A. Williams, W.J. Nelson
2001, International Journal of Coal Geology (45) 227-246
The Western Kentucky No. 4 coal is a high-volatile B to high-volatile C bituminous coal that has been heavily mined along the southern margin of the Western Kentucky Coal Field. The seam has a reputation for rolling floor elevation. Elongate trends of floor depressions are referred to as "dips" and...
Seismic tomography shows that upwelling beneath Iceland is confined to the upper mantle
G.R. Foulger, M.J. Pritchard, B.R. Julian, J.R. Evans, R. M. Allen, G. Nolet, W. J. Morgan, B. H. Bergsson, P. Erlendsson, S. Jakobsdottir, S. Ragnarsson, R. Stefansson, K. Vogfjord
2001, Geophysical Journal International (146) 504-530
We report the results of the highest-resolution teleseismic tomography study yet performed of the upper mantle beneath Iceland. The experiment used data gathered by the Iceland Hotspot Project, which operated a 35-station network of continuously recording, digital, broad-band seismometers over all of Iceland 1996-1998. The structure of the upper mantle...
Major, trace element and isotope geochemistry (Sr-Nd-Pb) of interplinian magmas from Mt. Somma-Vesuvius (Southern Italy)
R. Somma, R. A. Ayuso, B. de Vivo, G. Rolandi
2001, Mineralogy and Petrology (73) 121-143
Major, trace element and isotopic (Sr, Nd, Pb) data are reported for representative samples of interplinian (Protohistoric, Ancient Historic and Medieval Formations) activity of Mt. Somma-Vesuvius volcano during the last 3500 years. Tephra and lavas exhibit significant major, trace element and isotopic variations. Integration of these data with those obtained...
Mars Color Imager (MARCI) on the Mars Climate Orbiter
M. C. Malin, J.F. Bell III, W. Calvin, R.T. Clancy, R.M. Haberle, P.B. James, S.W. Lee, P.C. Thomas, M.A. Caplinger
2001, Journal of Geophysical Research E: Planets (106) 17651-17672
The Mars Color Imager, or MARCI, experiment on the Mars Climate Orbiter (MCO) consists of two cameras with unique optics and identical focal plane assemblies (FPAs), Data Acquisition System (DAS) electronics, and power supplies. Each camera is characterized by small physical size and mass (∼6×6×12 cm, including baffle; <500 g),...
Distribution of algae in the San Joaquin River, California, in relation to nutrient supply, salinity and other environmental factors
H.V. Leland, L. R. Brown, D. K. Mueller
2001, Freshwater Biology (46) 1139-1167
1. The taxonomic composition and biomass of the phytoplankton and the taxonomic composition of the phytobenthos of the San Joaquin River and its major tributaries were examined in relation to water chemistry, habitat and flow regime. Agricultural drainage and subsurface flow contribute to a complex gradient of salinity and nutrients...
Introduction to special issue titled earthquake hazard evaluation in the Central United States
E.S. Schweig, J.S. Gomberg, R. B. Van Arsdale
2001, Engineering Geology (62) 1-5
[No abstract available]...
Declining ring-necked pheasants in the Klamath Basin, California: II. Survival, productivity, and cover
Robert A. Grove, D. R. Buhler, Charles J. Henny, A. D. Drew
2001, Northwestern Naturalist (82) 85-101
Cover condition and its influence on nesting success, survival, and body condition of ring-necked pheasants (Phasianus colchicus) were evaluated at Tule Lake National Wildlife Refuge (TLNWR) and Lower Klamath National Wildlife Refuge (LKNWR). Inadequate nesting cover was responsible for extremely low nest success early in the nesting season at TLNWR....
The geology and palynology of lower and Middle Pennsylvanian strata in the Western Kentucky Coal Field
C.F. Eble, S.F. Greb, D.A. Williams
2001, International Journal of Coal Geology (47) 189-206
The Western Kentucky Coal Field is the southern tip of the Eastern Interior, or Illinois Basin. Pennsylvanian rocks in this area, which include conglomerate, sandstone, shale, limestone and coal, were deposited primarily in coastal-deltaic settings at a time when western Kentucky was located close to the equator. This paper discusses...
Influence of military activities on raptor abundance and behavior
Linda S. Schueck, J.M. Marzluff, Karen Steenhof
2001, The Condor (103) 606-615
We investigated the influence of military training on the abundance and behavior of raptors at a military training area in the Snake River Birds of Prey National Conservation Area in Idaho during the breeding seasons of 1991a??1994. Raptor counts on military training ranges did not differ when we compared all...
Spawning migration of lacustrine-adfluvial bull trout in a natural area
Samuel J. Brenkman, Gary L. Larson, Robert E. Gresswell
2001, Transactions of the American Fisheries Society (130) 981-987
We investigated the spawning migration of lacustrine-adfluvial bull trout Salvelinus confluentus in the North Fork Skokomish River in Olympic National Park (Washington State) during 1996. Day-snorkeling and electrofishing were conducted to determine timing and duration of the migration and the distribution and abundance of bull trout. The primary spawning migration began in...
Comparing movement patterns of satellite-tagged male and female polar bears
Steven C. Amstrup, George M. Durner, T. L. McDonald, D.M. Mulcahy, G.W. Garner
2001, Canadian Journal of Zoology (79) 2147-2158
Satellite radiotelemetry has provided great insights into the movements and behaviors of polar bears (Ursus maritimus). The diameter of the neck of adult male polar bears exceeds that of their head, however, and radio collars slip off. This has limited collection of movement information to that from radio-collared females. To...
Standard Reference Material (SRM 1990) for Single Crystal Diffractometer Alignment
W. Wong-Ng, T. Siegrist, G.T. DeTitta, L.W. Finger, H. T. Evans Jr., E.J. Gabe, G.D. Enright, J.T. Armstrong, M. Levenson, L.P. Cook, C.R. Hubbard
2001, Journal of Research of the National Institute of Standards and Technology (106) 1071-1095
An international project was successfully completed which involved two major undertakings: (1) a round-robin to demonstrate the viability of the selected standard and (2) the certification of the lattice parameters of the SRM 1990, a Standard Reference Material?? for single crystal diffractometer alignment. This SRM is a set of ???3500...
Growth rate responses of Missouri and lower Yellowstone river fishes to a latitudinal gradient
M.A. Pegg, C.L. Pierce
2001, Journal of Fish Biology (59) 1529-1543
Growth rate coefficients estimated for channel catfish Ictalurus punctatus, emerald shiners Notropis atherinoides, freshwater drums Aplodinotus grunniens, river carpsuckers Carpiodes carpio and saugers Stizostedion canadense collected in 1996-1998 from nine river sections of the Missouri and lower Yellowstone rivers at two life-stages (young-of-the-year and age 1 + years) were significantly...
Geographer at Work
P. Kowalski
2001, Geographical Bulletin - Gamma Theta Upsilon (43) 79-82
[No abstract available]...
Decreased glutathione S-transferase expression and activity and altered sex steroids in Lake Apopka brown bullheads (Ameriurus nebulosus)
E.P. Gallagher, T. S. Gross, K.M. Sheehy
2001, Aquatic Toxicology (55) 223-237
A number of freshwater lakes and reclaimed agricultural sites in Central Florida have been the receiving waters for agrochemical and municipal runoff. One of these sites, Lake Apopka, is also a eutrophic system that has been the focus of several case studies reporting altered reproductive activity linked to bioaccumulation of...
The Pacific island mapping program of the U.S. geological survey
F.C. Whitmore Jr.
2001, Atoll Research Bulletin 1-10
[No abstract available]...
Comparisons of ground motions from the 1999 Chi-Chi, earthquake with empirical predictions largely based on data from California
D.M. Boore
2001, Bulletin of the Seismological Society of America (91) 1212-1217
This article has the modest goal of comparing the ground motions recorded during the 1999 Chi-Chi, Taiwan, mainshock with predictions from four empirical-based equations commonly used for western North America; these empirical predictions are largely based on data from California. Comparisons are made for peak acceleration and 5%-damped response spectra...
Spatial patterns of diagenesis during geothermal circulation in carbonate platforms
Alicia M. Wilson, Ward E. Sanford, F. Whitaker, P. Smart
2001, American Journal of Science (301) 727-752
Geothermal convection of seawater deep in carbonate platforms could provide the necessary supply of magnesium for dolomitization at temperatures high enough to overcome kinetic limitations. We used reactive-transport simulations to predict the rates and spatial patterns of dolomitization during geothermal convection in a platform that was 40 km across...
Rehabilitation of gypsum-mined lands in the Indian desert
K.D. Sharma, S. Kumar, L. P. Gough
2001, Arid Soil Research and Rehabilitation (15) 61-76
The economic importance of mining in the Indian Desert is second only to agriculture. Land disturbed by mining, however, has only recently been the focus of rehabilitation efforts. This research assesses the success of rehabilitation plans used to revegetate gypsum mine spoils within the environmental constraints of the north-west Indian...
Is it time to give up?
R. W. Buddemeier
2001, Conference Paper, Bulletin of Marine Science
The world's coral reefs show rapid decline as a result of environmental change. Coral reef communities and organisms are stressed, potentially mortally, by (1) rising temperature, (2) rising atmospheric/surface ocean CO2 levels, (3) rising human populations, and (4) local aspects of climate change other than temperature. Further increase in all...
A comparison of physiological indicators of sublethal cadmium stress in wetland plants
I.A. Mendelssohn, K.L. McKee, T. Kong
2001, Environmental and Experimental Botany (46) 263-275
Physiological indices, including photosynthesis, chlorophyll fluorescence, adenylate energy charge (AEC) ratio, and leaf reflectance, were determined for Typha domingensis and Spartina alterniflora in response to increasing concentrations of Cd and compared with the growth responses of these species. Leaf expansion, the live/total ratio of plant aboveground biomass, and the aboveground...
High resolution seismic-reflection imaging of shallow deformation beneath the northeast margin of the Manila high at Big Lake, Arkansas
J. K. Odum, W. J. Stephenson, R. A. Williams, D. M. Worley, Margaret J. Guccione, R. B. Van Arsdale
2001, Engineering Geology (62) 91-103
The Manila high, an elliptical area 19 km long (N-S) by 6 km wide (E-W) located west-southwest of Big Lake. Arkansas, has less than 3 m of topographic relief. Geomorphic, stratigraphic and chronology data indicate that Big Lake formed during at least two periods of Holocene uplift and subsequent damming...
African desert dust in the Caribbean atmosphere: Microbiology and public health
Dale W. Griffin, V.H. Garrison, J.R. Herman, E.A. Shinn
2001, Aerobiologia (17) 203-213
Air samples collected on St. John in the U.S. Virgin Islands were screened for the presence of viable bacteria and fungi to determine if the number of cultivatable microbes in the atmosphere differed between "clear atmospheric conditions" and "African dust-events." Results indicate that during "African dust-events," the numbers of cultivatable...
Central US earthquake catalog for hazard maps of Memphis, Tennessee
R. L. Wheeler, C.S. Mueller
2001, Engineering Geology (62) 19-29
An updated version of the catalog that was used for the current national probabilistic seismic-hazard maps would suffice for production of large-scale hazard maps of the Memphis urban area. Deaggregation maps provide guidance as to the area that a catalog for calculating Memphis hazard should cover. For the future, the...
