Evaluating temporal changes in stream condition in three New Jersey rive basins by using an index of biotic integrity
Ming Chang, Jonathan G. Kennen, Ellyn Del Corso
2000, Bulletin of the New Jersey Academy of Science (45) 1-12
An index of biotic integrity (!B!) modified for New Jersey streams was used to compare changes in stream condition from the 1970s to the 1990s in Delaware, Passaic, and Raritan River Basins. Stream condition was assessed at 88 sampling locations. Mean IBI scores for all basins increased from the 1970s...
IFR enroute low altitude
United States.
2000, Report
No abstract available....
Two-phase debris-flow across 3-D terrain: model predictions and experimental tests
R.M. Iverson, R.P. Denlinger, R.G. LaHusen, M. Logan
2000, Book, Proceedings of the Third International Conference on Debris-Flow Hazards Mitigation
No abstract available....
The Edwards Aquifer Authority and U.S. Geological Survey Water Resources Program Quarterly Report - 10/01/1999 to 12/31/1999
2000, Report
Fully developed snout profiles of noncohesive debris-flows with internal friction
Cheng-lung Chen, Chi-Hai Ling
2000, Book, Debris flow hazards mitigation: mechanics, prediction, and assessment: proceedings of the Second International Conference on Debris-Flow Hazards Mitigation, Taipei, Taiwan, 16-18 August 2000
No abstract available....
Sedimentation
C.R. Hupp, M.R. Schening
2000, Book chapter, The Coosawhatchie Bottomland Ecosystem Study: a report on the development of a reference wetland
No abstract available....
Growth in conventional fields in high-cost areas: A case study
E. D. Attanasi
2000, World Oil (221) 63-66
Exploration managers commonly base future drilling decisions on past experience in an area. To do this well, they should consider both discovered and undiscovered resources to characterize total future potential. Discovery-size estimates should be adjusted to account for future field growth; otherwise, the relative efficiency of recent exploration will be...
Hydrologic and geologic characteristics of the Yucca Mountain site relevant to the performance of a potential repository: Day 1, Las Vegas, Nevada to Pahrump, Nevada: Stop 8. Trench 14
J. S. Stuckless
2000, GSA Field Guides (2) 404-405
No abstract available....
Stratigraphy, correlation, depositional setting, and geophysical characteristics of the Oligocene Snowshoe Mountain Tuff and Creede Formation in two cored boreholes
Daniel Larsen, Philip H. Nelson
2000, GSA Special Papers (346) 159-178
Core descriptions and geophysical logs from two boreholes (CCM-1 and CCM-2) in the Oligocene Snowshoe Mountain Tuff and Creede Formation, south-central Colorado, are used to interpret sedimentary and volcanic facies associations and their physical properties. The seven facies association include a mixed sequence of intracaldera ash-flow tuffs and breccias, alluvial...
Hydrologic and geologic characteristics of the Yucca Mountain site relevant to the performance of a potential repository: Day 1, Las Vegas, Nevada to Pahrump, Nevada: Stop 4. Travertine Point, Furnace Creek Wash, Death Valley, California
J. S. Stuckless
2000, GSA Field Guides (2) 394-396
No abstract available....
A guide to the geology of Organ Pipe Cactus National Monument and the Pinacate Biosphere Reserve
John V. Bezy, James T. Gutmann, Gordon Haxel
2000, Report
No abstract available....
Elements in cottonwood trees as an indicator of ground water contaminated by landfill leachate
James A. Erdman, Scott Christenson
2000, Groundwater Monitoring & Remediation (20) 120-126
Ground water at the Norman Landfill Research Site is contaminated by a leachate plume emanating from a closed, unlined landfill formerly operated by the city of Norman, Oklahoma, Ground water contaminated by the leachate plume is known to be elevated in the concentration of many, organic and inorganic constituents. Specific...
The derivation of World Magnetic Model 2000
Susan Macmillan, John M. Quinn
2000, British Geological Survey Technical Report WM/00/17R
This report contains a detailed summary of the data used, the modelling techniques employed and the results obtained in the production of the World Magnetic Model 2000. This model is designed for use in air and sea navigation systems and is valid till 2005.0. The derivation of World Magnetic Model...
Current research efforts in decision support system technology as applied to trumpeter swan management
Richard S. Sojda, J.E. Cornely, L. H. Fredrickson, A.E. Howe
2000, Conference Paper, Proceedings and Papers of the Seventeenth Trumpeter Swan Society Conference
No abstract available....
Boreal Toad
Erin Muths, Paul Stephen Corn
R.P. Reading, B. Miller, editor(s)
2000, Book chapter, Endangered animals: a reference guide to conflicting issues
No abstract available....
Debris-flow response of southern California watersheds burned by wildfire
S.H. Cannon
2000, Book, Debris-flow hazards mitigation: mechanics, prediction, and assessment: proceedings of the Second International Conference on Debris-Flow Hazards Mitigation, Taipei, Taiwan, 16-18 August 2000
No abstract available....
Hydrology
Mark H. Eisenbies, W. Brian Hughes
2000, General Technical Report SRS-38
Hydrologic process are the main determinants of the type of wetland located on a site. Precipitation, groundwater, or flooding interact with soil properties and geomorphic setting to yield a complex matrix of conditions that control groundwater flux, water storage and discharge, water chemistry, biotic productivity, biodiversity, and biogeochemical cycling. Hydroperiod...
Hydrologic and geologic characteristics of the Yucca Mountain site relevant to the performance of a potential repository: Day 1, Las Vegas, Nevada to Pahrump, Nevada: Stop 2A. Devils Hole, a tectonic cave in southern Nevada with a continuous 0.5 million-year-long paleoclimate record
A.C. Riggs, I.J. Winograd, W. J. Carr, Peter T. Kolesar, R.J. Hoffman
2000, GSA Field Guides (2) 387-391
No abstract available....
Verification of remotely sensed data
Trude King, Roger N. Clark
Friedrich Kuehn, Trude V. V. King, Bernhard Hoerig, Douglas C. Peters, editor(s)
2000, Book chapter, Remote sensing for site characterization
Ground or field checks are an important part of any remote sensing study and are necessary to provide an accurate and useful interpretive product. Field checking is necessary to confirm the validity of spectral, spatial, and morphological interpretations. In general, field checking should be done during all stages of any...
Geology and depositional environments of the Guadalupian rocks of the northern Del Norte Mountains, West Texas
S.F. Rudine, B. R. Wardlaw, D.M. Rohr, R.E. Grant
2000, Smithsonian Contributions to Earth Sciences (32) 291-312
The Guadalupian rocks of the northern Del Norte Mountains were deposited in a foreland basin between land of the Marathon orogen and a carbonate shoal established on the geanticline separating the foreland basin from the Delaware basin. Deposition was alternately influenced by coarse clastic input from the orogen and carbonate...
Methane hydrate dissociation rates at 0.1 MPa and temperatures above 272 K
S. Circone, Laura A. Stern, Stephen H. Kirby, John C. Pinkston, William B Durham
2000, Annals of the New York Academy of Sciences (912) 544-555
We performed rapid depressurization experiments on methane hydrate under isothermal conditions above 272 K to determine the amount and rate of methane evolution. Sample temperatures rapidly drop below 273 K and stabilize near 272.5 K during dissociation. This thermal anomaly and the persistence of methane hydrate are consistent with the...
Duration of sedimentation of Creede Formation from 40Ar/39Ar ages
Marvin A. Lanphere
2000, GSA Special Papers (346) 71-76
The Oligocene Creede Formation was deposited in the moat of the Creede caldera, which formed as a result of eruption of ythe Snowshoe Mountains Tuff. The Creede Formation in the two moat drill holes contains ash layers that are considered fallout tuffs derived from Fisher Dacite volcanoes that were erupting...
Hydrologic and geologic characteristics of the Yucca Mountain site relevant to the performance of a potential repository: Day 1, Las Vegas, Nevada to Pahrump, Nevada: Stop 6A. Keane Wonder Spring and regional groundwater flow in the Death Valley region
W.C. Steinkampf
2000, GSA Field Guides (2) 398-398
Yucca Mountain, located ~100 mi northwest of Las Vegas, Nevada, has been designated by Congress as a site to be characterized for a potential mined geologic repository for high-level radioactive waste. This field trip will examine the regional geologic and hydrologic setting for Yucca Mountain, as well as specific results...
Synthesis of crustal seismic structure and implications for the concept of a slab gap beneath coastal California
Thomas M. Brocher, Uri S. ten Brink, Tanni Abramovitz
2000, Book chapter, Tectonic studies of Asia and the Pacific rim: a tribute to Benjamin M. Page (1911-1997)
Detrital zircon geochronology of upper Paleozoic and lower Mesozoic strata of the northern Sierra Terrane, northeastern California
Matthew S. Spurlin, George E. Gehrels, David S. Harwood
M. J. Soreghan, George E. Gehrels, editor(s)
2000, Book chapter, Paleozoic and Triassic paleogeography and tectonics of western Nevada and northern California
No abstract available....
