Potential overflow of Mojave Creek near disposal site, Edwards Air Force Base, California
Randy L. Dinehart, Jerry G. Harmon
1998, Open-File Report 98-97
Sedimentological evidence in Mojave Creek near Edwards, California, indicates that the largest discharge in the last hundred years near the disposal site of the Main Base Landfill at Edwards Air Force Base was a few hundred cubic feet per second. The distal ends of two alluvial fans on the Mojave...
The design and performance of a low-cost strong-motion sensor using the ICS-3028 micromachined accelerometer
J.R. Evans
1998, Open-File Report 98-109
The severity of earthquake ground shaking varies tremendously over very short distances (Figures 1a-c). Within a distance of as little as 1 km from the nearest station, one knows little more than what can be obtained from an attenuation relation, given only distance from the fault rupture and the geology...
Effects of landcover, water redistribution, and temperature on ecosystem processes in the South Plate Basin
Jill Baron, M.D. Hartman, Timothy G.F. Kittel, L.E. Band, D. S. Ojima, R.B. Lammers
1998, Ecological Applications (8) 1037-1051
Over one-third of the land area in the South Platte Basin of Colorado, Nebraska, and Wyoming, has been converted to croplands. Irrigated cropland now comprises 8% of the basin, while dry croplands make up 31%. We used the RHESSys model to compare the changes in plant productivity and vegetation-related hydrological...
Mapping the Sea Floor and Biological Habitats of the Stellwagen Bank National Marine Sanctuary Region
Water Resources Division, U.S. Geological Survey
1998, Fact Sheet 078-98
The Guinevere Planitia region of Venus in four map sheets; 1, Radar image map of the Guinevere, Planitia region of Venus; 2, Radar image and shaded relief map of the Guinevere Planitia region of Venus; 3, Altimetric radar image map of trhe Guinevere Planitia region of Venus; 4, Topographic map of the Guinevere
Water Resources Division, U.S. Geological Survey
1998, IMAP 2457
No abstract available....
Hydrogeology and simulation of the effects of reclaimed-water application in west Orange and southeast Lake counties, Florida
Andrew M. O’Reilly
1998, Water-Resources Investigations Report 97-4199
Wastewater reclamation and reuse has become increasingly popular as water agencies search for alternative water-supply and wastewater-disposal options. Several governmental agencies in central Florida currently use the land-based application of reclaimed water (wastewater that has been treated beyond secondary treatment) as a management alternative to surface-water disposal of wastewater. Water...
Chemistry and isotopic composition of ground water along a section near the Newmark area, San Bernardino County, California
John A. Izbicki, Wesley R. Danskin, Gregory O. Mendez
1998, Water-Resources Investigations Report 97-4179
Chemical and isotopic analyses and flow-meter measurements in pumped wells were used to determine the source, movement, and age of ground water along a section of the valley-fill aquifer from the San Jacinto Fault to the base of the San Bernardino Mountains near the Newmark area in the Bunker Hill...
Bedrock geologic map of the Yucca Mountain area, Nye County, Nevada
Warren C. Day, Robert P. Dickerson, Christopher J. Potter, Donald S. Sweetkind, Carma A. San Juan, Ronald M. Drake II, Christopher J. Fridrich
1998, IMAP 2627
Yucca Mountain, Nye County, Nevada, has been identified as a potential site for underground storage of high-level radioactive nuclear waste. Detailed bedrock geologic maps form an integral part of the site characterization program by providing the fundamental framework for research into the geologic hazards and hydrologic behavior of the mountain....
Hydrology of the Bonneville Salt Flats, northwestern Utah, and simulation of ground-water flow and solute transport in the shallow-brine aquifer
James L. Mason, Kenneth L. Kipp
1998, Professional Paper 1585
This report describes the hydrologic system of the Bonneville Salt Flats with emphasis on the mechanisms of solute transport. Variable-density, three-dimensional computer simulations of the near-surface part of the ground-water system were done to quantify both the transport of salt dissolved in subsurface brine that leaves the salt-crust area and...
Geologic map of the Poolesville quadrangle, Frederick and Montgomery Counties, Maryland, and Loudoun County, Virginia
Scott Southworth
1998, Geologic Quadrangle 1761
Water-quality trends in the Santa Ana River at MWD Crossing and below Prado Dam, Riverside County, California
Carmen A. Burton, John A. Izbicki, Katherine S. Paybins
1998, Water-Resources Investigations Report 97-4173
The Santa Ana River, located in an extensively urbanized basin, drains about 2,670 square miles near Los Angeles, California. Almost all flow in the river, about 200,000 acre-feet annually, is diverted to ponds where it infiltrates and recharges underlying aquifers. About 2 million people are dependent on these aquifers for...
A vision for the future of strong-motion recording
Roger D. Borcherdt
1998, Conference Paper, Wind and seismic effects: Proceedings of the 30th joint meeting of the U.S.-Japan Cooperative Program in Natural Resources
No abstract available....
Pebble orientation on large, experimental debris-flow deposits
Jon J. Major
1998, Sedimentary Geology (117) 151-164
Replicable, pronounced orientation of discoid pebbles (≥8 mm) embedded on surfaces of large (∼10 m3) experimental debris-flow deposits reveals that strongly aligned, imbricate fabric can develop rapidly over short distances in mass flows. Pebble long axes aligned subparallel to deposit margins as well as subparallel to margins of surge waves...
Total phosphorus and total nitrogen mass balances for Lago de Cidra
Orlando Ramos-Gines
1998, Conference Paper, Proceedings of the Third International Symposium on Water Resources, Fifth Caribbean Islands Water Resources Congress
Evidence against hydrogen-based microbial ecosystems in basalt aquifers
Robert T. Anderson, Francis H. Chapelle, Derek R. Lovley
1998, Science (281) 976-977
It has been proposed that hydrogen produced from basalt-ground-water interactions may serve as an energy source that supports the existence of microorganisms in the deep subsurface on Earth and possibly on other planets. However, experiments demonstrated that hydrogen is not produced from basalt at an environmentally relevant, alkaline pH. Small...
Water budgets of forested and agriculturally-developed watershed in Puerto Rico
Matthew C. Larsen, I.M. Concepcion
1998, Conference Paper, Proceedings of the Third International Symposium on Water Resources, Fifth Caribbean Islands Water Resources Congress
Lanai Hookbill (Dysmorodrepanis munroi
Thomas J. Snetsinger, Michelle Reynolds, Christina M. Hermann
1998, Birds of North America No. 336
No abstract available....
Vulnerability of island tropical montane cloud forests to climate change, with special reference to East Maui, Hawaii
Lloyd L. Loope, Thomas W. Giambelluca
1998, Climatic Change (39) 503-517
Island tropical montane cloud forests may be among the most sensitive of the world's ecosystems to global climate change. Measurements in and above a montane cloud forest on East Maui, Hawaii, document steep microclimatic gradients. Relatively small climate-driven shifts in patterns of atmospheric circulation are likely to trigger major local...
The coseismic slip distributions of the 1940 and 1979 Imperial Valley, California, earthquakes and their implications
Nancy E. King, Wayne R. Thatcher
1998, Journal of Geophysical Research: Solid Earth (103) 18069-18086
Geodetic arrays observed by the U.S. Coast and Geodetic Survey span the Imperial fault in southern California. For the 1940 M 7.1 Imperial Valley earthquake, a 1934–1941 triangulation network has sufficient resolution to allow inversion for the coseismic slip distribution on fault segments 5 to 25 km long extending from the surface...
Strain accumulation rates in the San Francisco Bay area, 1972–1989
J.C. Savage, R.W. Simpson, M.H. Murray
1998, Journal of Geophysical Research: Solid Earth (103) 18039-18051
Maps of the strain accumulation rate in the San Francisco Bay area have been constructed from trilateration observations extending from about 1972 until the Loma Prieta earthquake in late 1989. The observations were corrected to remove offsets imposed by shallow fault creep and by four M ∼6 earthquakes that occurred...
Nest relocation using PVC "spotters"
John C. Simon
1998, Journal of Field Ornithology (69) 644-646
A simple device to aid in the rapid relocation of nests, composed on PVC pipe and tie wire, is described. A 16-18 cm length of pipe can be attached to a supporting structure with a section of wire and adjusted to point at the target nest by its discoverer. Used...
Use of 13C NMR and FTIR for elucidation of degradation pathways during natural litter decomposition and compositing. II. Changes in leaf composition after senescence
Robert L. Wershaw, K. R. Kennedy, J.E. Henrich
1998, Book chapter, Humic substances structures, properties, and uses
No abstract available. ...
C4 photosynthetic modifications in the evolutionary transition from land to water in aquatic grasses
Jon E. Keeley
1998, Oecologia (116) 85-97
Cladistic analysis supports the conclusion that the Orcuttieae tribe of C4 grasses reflect evolution from a terrestrial ancestry into seasonal pools. All nine species in the tribe exhibit adaptations to the aquatic environment, evident in the structural characteristics of the juvenile foliage, which persist submerged for 1–3 months prior to metamorphosis...
Seismic reflection profiles of the Puerto Rico Trench: Shortening between the North American and Caribbean plates
D. K. Larue, H. F. Ryan
1998, Book chapter, Tectonics and geochemistry of the northeastern Caribbean
No abstract available....
Toxicity of sediment collected upriver and downriver of major cities along the Lower Mississippi River
P. V. Winger, P. J. Lasier
1998, Archives of Environmental Contamination and Toxicology (35) 213-217
The Lower Mississippi River contributes significantly to the biodiversity and ecological stability of the alluvial valley, but agricultural, industrial, and municipal developments have historically impacted environmental quality of the river. Toxicity of sediment and sediment pore water was used to assess the current effects of major cities on sediment quality...
