Kandia: threatened forest, threatened livelihood - a study of human-environment interaction in the Department of Velingara, Senegal
Karen Schoonmaker Freudenberger, G. Gray Tappan
1997, Report
This case study is one of several carried out as part the Long-term Environmental Monitoring in Senegal Project. Co-financed by USAID and the U.S. Geological Survey's EROS Data Center (EDC), and implemented by EDC and the Centre de Suivi Ecologique (CSE), this project has carried out extensive monitoring of natural...
Use of a spatial decision support system for analysis of habitat use by wintering northern pintails
Clinton W. Jeske, W. Ji, Paul C. Chadwick, W. Norling, M. C. Finley
1997, Conference Paper, Effect of habitat loss and change on waterbirds
A multi-functional spatial decision support system (SDSS) was,developed at the spatial analysis branch Of the National Wetlands Research Center, and the wildlife analysis module of the system was used to study habitat use by wintering pintail. We instrumented female pintails at Catahoula Lake, Louisiana, in October of 1992-94 and located...
U-Th-Pb isotopic systematics of lherzolithic shergotite Yamato-793605
Keiji Misawa, N. Nakamura, Wayne R. Premo, M. Tatsumoto
1997, Antarctic Meteorite Research (10) 95-108
No abstract available....
Chemical, mineralogical, and magnetic characterization of sized fly ash from a coal-fired power plant in Kentucky
James D. Cathcart, Richard L. Reynolds, Michael E. Brownfield, James C. Hower
1997, Conference Paper, Pushing the envelope: 1997 International Ash Utilization Symposium
No abstract available....
U.S. Geological Survey studies of water co-produced with oil and gas: Implications for future petroleum resource development
George N. Breit, Yousif K. Kharaka, Robert A. Zielinski, C. A. Rice, Bruce D. Smith, Jennie L. Ridgley
1997, Conference Paper, SPE/EPA exploration and production environmental conference
The U.S. Geological Survey is conducting research on the impacts of produced waters on petroleum resource development and the environment. Ongoing multidisciplinary investigations are focused on the 1) quantity and quality of current water production, 2) geologic and geochemical parameters that influence the viability of injection wells, and 3) processes...
The frequency and intensity of Atlantic hurricanes and their influence on the structure of south Florida mangrove communities
Thomas W. Doyle, Garrett F. Girod
1997, Book chapter, Hurricanes: Climate and socioeconomic impacts
Hurricanes are formidable forces that wreak havoc on society and nature alike. Mangrove ecosystems are especially vulnerable because they thrive in the intertidal zone of tropical regions where hurricanes originate and are most frequent. Because mangroves are found at the land-sea interface where hurricanes are often most intense, these coastal...
Book review of Clean Water: The citizen’s complete guide to water quality and water pollution control
Jon J. Major
1997, Northwest Science (71) 161-162
No abstract available. ...
Pliocene-Quaternary geology of northern New Jersey; road log and description of field stops, Sunday June 1, 1997
Ron W. Witte, Jack B. Epstein, John Wright
1997, Conference Paper, Pliocene-Quaternary geology of northern New Jersey: Guidebook - Annual reunion of the northeastern friends of the Pleistocene field conference
No abstract available....
Pliocene-Quaternary geology of northern New Jersey: Guidebook - Annual reunion of the northeastern friends of the Pleistocene field conference
Ron W. Witte, Gail M. Ashley, Jack B. Epstein, Richard K. Shaw, John Wright, Scott D. Stanford
1997, Book
No abstract available....
Restoration of mangrove ecosystems after an oil spill
C. Edward Proffitt, Donna Devlin, Thomas W. Doyle
1997, Conference Paper, Managing oil spills in mangrove ecosystems: Effects, remediation, restoration, and modeling: A review produced from a workshop convened August 1995 at McNeese State University
No abstract available....
Feather mineral content of redheads (Aythya americana) wintering along the Gulf of Mexico
Steven B. Murden, Marc C. Woodin, Thomas C. Michot, Milton W. Weller, Joseph L. Moore, S.E. Adair, K.L. Risenhoover
1997, Conference Paper, Limnology and waterfowl: Monitoring, modelling and management
No abstract available....
Sr-isotopic evidence for leakage of pore water from clay-silt confining units to the Atlantic City 800-foot sand, Atlantic City, New Jersey
Zoltan Szabo, A. A. Pucci Jr., Mark D. Feigenson
1997, Conference Paper, Proceedings of the Ocean Drilling Program; scientific results; New Jersey coastal plain; covering onshore boreholes as part of the New Jersey sea-level transect, Island Beach and Atlantic City sites, March-August 1993, Cape May site, March-April 1994
The evolution of water quality in confined aquifers in the New Jersey Coastal Plain may be affected by leakage of pore water from the adjacent confining units. We investigated the distribution and sources of solutes, particularly Sr, in pore water mechanically extracted from clay-silt core samples collected from depths of...
Initiation of debris flows in tributaries of the Colorado River in Grand Canyon, Arizona
Peter G. Griffiths, Robert Webb, Theodore S. Melis
1997, Conference Paper, Proceedings of the 1997 1st international conference on debris-flow hazards mitigation: Mechanics, prediction, and assessment
Debris flows are initiated in tributaries of the Colorado River in Grand Canyon when intense rainfall causes failures in colluvium and (or) bedrock. Most debris flows occur in the summer during localized convective thunderstorms with rainfall intensities as high as 40 mm/hr. Rarer and larger debris flows occur during unusually...
Debris flows in Grand Canyon National Park: Peak discharges, flow transformations, and hydrographs
Theodore S. Melis, Robert Webb, Peter G. Griffiths
1997, Conference Paper, Proceedings of the 1997 1st international conference on debris-flow hazards mitigation: Mechanics, prediction, and assessment
Direct measurements of debris-flow hydrograph and flow behavior in remote drainage areas are rare. We infer hydrographs and flow behavior for recent debris flow in bedrock tributaries of the Colorado River from preserved stratigraphic relations, sedimentology and surface morphology of debris fans and evidence of flow-surface elevations. We propose that...
Stratigraphy and regional significance of Mississippian to Jurassic rocks in Sierra Santa Teresa, Sonora, Mexico
John H. Stewart, Ricardo Amaya-Martinez, Robert G. Stamm, Bruce R. Wardlaw, George D. Stanley Jr., Calvin H. Stevens
1997, Revista Mexicana de Ciencias Geológicas (14) 115-135
No abstract available....
Comparison of Landsat Thematic Mapper and high resolution photography to Identify change in complex coastal wetlands
Elijah Ramsey III, S.C. Laine
1997, Journal of Coastal Research (13) 281-292
Landsat Thematic Mapper (TM) images were used to generate pre- and post- hurricane classifications of a complex wetland environment in southern Louisiana. Accuracies were estimated as 77% and 81.5% for the pre- and post- classifications that included water, emergent vegetation, floating vegetation, and mud flats. From the two classifications, areas...
Effects of acidic deposition on water quality and forest health in Georgia
Thomas G. Huntington, R. P. Hooper
1997, Conference Paper, Proceedings of the 1997 Georgia Water Resources Conference : March 20-22, 1997, Athens, Georgia
Biogeochemical studies at the Panola Mountain Research Watershed near Atlanta, Ga., and in the Coastal Plain Province of Georgia have provided an assessment of some of the potential effects of acid deposition on streamwater quality and forest health in Georgia. Historically, "acid rain" has not been considered a potentially serious...
Effects of El Nino on streamflow, lake level, and landslide potential
Richard L. Reynolds, Michael D. Dettinger, Daniel Cayan, Doyle Stephens, Lynn M. Highland, Raymond C. Wilson
1997, Conference Paper, Impact of climate change and land use in the southwestern United States
One of the most important sources of year-to-year climate variation in the Southwest is the El Niño phenomenon of the tropical Pacific Ocean. El Niño is a natural but largely unpredictable condition that results from complex interplay among clouds and storms, regional winds, oceanic temperatures, and ocean currents along the...
Capture myopathy in a captive Black-bellied Whistling Duck
Mary C. Finlay, Clinton W. Jeske
1997, Wildfowl (48) 181-185
A female captive-raised Black-bellied Whistling Duck exhibited signs of capture myopathy within 24 hours after a strenuous capture. Serum creatine kinase activity 48 hrs after capture was 23,680 IU/L and aspartate aminotransferase activity was 898 IU/L. Postmortem lesions included large, pale areas of muscle tissue in the hind limbs and...
Hydrologic inferences from strontium isotopes in pore water from the unsaturated zone at Yucca Mountain, Nevada
Brian D. Marshall, Kiyoto Futa, Zell E. Peterman
1997, Conference Paper, Proceedings of FTAM: Field testing and associated modeling of potential high-level nuclear waste geologic disposal sites
Calcite is ubiquitous at Yucca Mountain, occurring in the soils and as fracture and cavity coatings within the volcanic tuff section. Strontium is a trace element in calcite, generally at the tens to hundreds of ppm level. Because calcite contains very little rubidium and the half-life of the 87Rb parent...
Cross‐hole radar attenuation tomography using a frequency centroid down‐shift method: Consideration of non‐linear frequency dependence of EM wave attenuation
Lanbo Liu, Chaoguang Zhou, John W. Lane Jr., F.P. Haeni
1997, Conference Paper, SEG technical program expanded abstracts
This paper presents a cross-hole radar attenuation tomography method based on analysis of the down-shift in the spectrum centroid frequency, and spectral broadening of the received radar signals. The method uses a parameter that combines centroid frequency down shift and variance increase for the projection function to construct the tomography...
Experimental analysis of debris-flow deposition--process and effects of pore-fluid pressure
Jon J. Major, Richard M. Iverson
1997, Conference Paper, Proceedings of International Symposium on Natural Disaster Prediction and Mitigation
No abstract available....
Response of flexible wire rope barriers to debris-flow loading
Jay S. DeNatale, Gregg L. Fiegel, Richard M. Iverson, Jon J. Major, Richard G. Lahusen, John D. Duffy, Gregory D. Fisher
1997, Conference Paper, Debris-flow hazards mitigation: Mechanics, prediction, and assessment: American Society of Civil Engineers, proceedings of first international DFHM conference
No abstract available....
Ecological resources of the Grand Staircase-Escalante National Monument
Jayne Belnap
1997, Conference Paper, Learning from the Land: Grand Staircase-Escalante National Monument Science Symposium Proceedings
No abstract available....
Integrated sampling for amphibian communities in montane habitats
R.B. Bury, D.J. Major
1997, Book chapter, Sampling Amphibians in Lentic Habitats: Methods and Approaches for the Pacific Northwest
No abstract available....
