Use of soil leachates to define the extent of brine-contaminated soils at the USGS petroleum environmental research site "B", Osage County, northeastern Oklahoma
Robert A. Zielinski, Cynthia A. Rice, James K. Otton
2002, Conference Paper, 9th International Petroleum Environmental Conference
Soils at an active oil production site with a history of surface releases of produced water were investigated to determine the chemical signature of salt contamination and the spatial distribution of soil salinity in relation to areas of obvious salt scarring. Grab samples of shallow soil (0-15 cm) and selected...
Environmental impacts of petroleum production: Fate of inorganic and organic chemicals in produced water from the Osage-Skiatook Petroleum Environmental Research sites, Osage County, Oklahoma
Yousif K. Kharaka, James J. Thordsen, Evangelos Kakouros, Marvin M. Abbott
2002, Conference Paper, 9th International Petroleum Environmental Conference
About 15 scientists from the U. S. Geological Survey, other Federal agencies and academia are involved in a multidisciplinary investigation to study the transport, fate, and natural attenuation of inorganic salts, trace metals, radionuclides and organic compounds present in produced water, and their impacts on soil, surface and ground water...
Rocky road in the Rockies: Challenges to biodiversity
Diana F. Tomback, Katherine C. Kendall
Jill Baron, editor(s)
2002, Book chapter, Rocky Mountain futures: An ecological perspective
To people worldwide, the Rocky Mountains of the United States and Canada represent a last bastion of nature in its purest and rawest form-unspoiled forests teeming with elk and deer stalked by mountain lions and grizzly bears; bald eagles nesting near lakes and rivers; fat, feisty native trout in rushing...
Diatoms as indicators of freshwater flow variation in central California
Scott W. Starratt
G. J. West, L. D. Buffaloe, editor(s)
2002, Report, Proceedings of the eighteenth Pacific Climate Workshop
No abstract available....
Produced water and hydrocarbon releases at the Osage-Skiatook petroleum environmental research sites, Osage County, Oklahoma: Introduction and geologic setting
James K. Otton, Robert A. Zielinski
2002, Conference Paper, 9th International Petroleum Environmental Conference
In February 2001, the USGS started studies of the impacts of produced water and hydrocarbon releases at 2 research sites adjacent to Skiatook Lake in southeastern Osage County near Tulsa, Oklahoma. Both sites are in a dissected area of modest relief underlain by interbedded shale, siltstone, and sandstone. Thicker resistant...
An editor's hello
Susan E. Hough
2002, Seismological Research Letters (73) 5-6
No abstract available....
Trace elements in marine ostracodes
Gary S. Dwyer, Thomas M. Cronin, Paul A. Baker
Jonathan A. Holmes, Allan R. Chivas, editor(s)
2002, Book chapter
This chapter contains sections titled:IntroductionBackgroundStudy ApproachResultsDiscussionConclusions...
Ostracoda and paleoceanography
Thomas M. Cronin, I. Boomer, G. S. Dwyer, J. Rodriguez-Lazaro
Jonathan A. Holmes, Allan R. Chivas, editor(s)
2002, Book chapter, The ostracoda: Applications in Quaternary research
This chapter contains sections titled:IntroductionBrief Summary of Modern Ostracodes in the World's OceansPaleoceanography Over 106-107 Year TimescalesOrbital Scale Climate VariabilityMillennial Scale ClimateCentennial and Decadal Climate TrendsFuture Work...
Magnetic anomaly map of North America
North American Magnetic Anomaly Group, Viki Bankey, Alejandro Cuevas, David L. Daniels, Carol A. Finn, Israel Hernandez, Patricia L. Hill, Robert Kucks, Warner Miles, Mark Pilkington, Carter Roberts, Walter Roest, Victoria Rystrom, Sarah Shearer, Stephen L. Snyder, Ronald E. Sweeney, Julio Velez
2002, Report
This digital Magnetic Anomaly database and map for the North American continent is the result of a joint effort by the Geological Survey of Canada (GSC), U.S. Geological Survey (USGS), and Consejo de Recursos Minerales of Mexico (CRM). The database and map represent a substantial upgrade from the previous compilation...
Late Cenozoic tectonic evolution of the north-central Mojave Desert inferred from fault history and physiographic evolution of the Fort Irwin area, California
David M. Miller, James C. Yount
2002, Book chapter, Geologic evolution of the Mojave Desert and Southwestern Basin and Range
No abstract available....
36 - Implications of crustal strain during conventional, slow, and silent earthquakes
M.J.S. Johnston, A. T. Linde
2002, International Geophysics (81) 589-605
Uniform block-slip motion consistent with simple shear on locked fault segments is the primary feature apparent in geodetic measurements of strain accumulation along plate boundaries (Savage, 1983). However, almost every aspect of fault failure is nonlinear in character. This premise derives from theoretical models (Kostrov, 1966; Richards, 1976; Andrews, 1976;...
The northern Yellowstone elk: density dependence and climatic conditions
Mark L. Taper, Peter J.P. Gogan
2002, Journal of Wildlife Management (66) 106-122
We analyzed a time series of estimates of elk (Cervus elaphus) numbers on the northern Yellowstone winter range from 1964 to 1979 and 1986 to 1995 using a variety of discrete time stochastic population dynamic models. These models included adjustments for density, an increase in the area of winter range...
Two‐step processing for 3D magnetic source locations and structural indices using extended Euler or analytic signal methods
Jeffrey Phillips
2002, Conference Paper, SEG technical program expanded abstracts 2002
No abstract available....
34 - State of stress in the Earth's lithosphere
Mark D. Zoback, Mary Lou Zoback
2002, International Geophysics (81) 559-568
The state of stress in the lithosphere is the result of the forces acting upon and within it. Knowledge of the magnitude and distribution of these forces can be combined with mechanical, thermal and rheological constraints to examine a broad range of lithospheric deformational processes. For example, such knowledge...
Seismicity, gas emission and deformation from 18 July to 25 September 1995 during the initial phreatic phase of the eruption of Soufrière Hills Volcano, Montserrat
Cynthia A. Gardner, Randall A. White
T. H. Druitt, B. P. Kokelaar, editor(s)
2002, Book chapter, The eruption of Soufrière Hills Volcano, Montserrat from 1995 to 1999
On 18 July 1995, after more than three years of irregularly increasing seismicity, phreatic explosions opened a new vent on Soufrière Hills Volcano, about 4 km east of the capital city of Plymouth, Montserrat. By early August 1995, the volcano was monitored by a nine-station seismic network, three telemetered electronic...
Techniques for collection and study of ostracoda
Dan L. Danielopol, Emi Ito, Guy Wansard, Takahiro Kamiya, Thomas M. Cronin, Angel Baltanas
Jonathan A. Holmes, Allan R. Chivas, editor(s)
2002, Book chapter, The ostracoda: Applications in Quaternary research
This chapter contains sections titled:IntroductionCollecting Modern OstracodaSample ProcessingAnalysis of Ostracod DataCulturing OstracodsConcluding Comments...
Development of an expert system for assessing trumpeter swan breeding habitat in the Northern Rocky Mountains.
Richard S. Sojda, John E. Cornely, Adele E. Howe
2002, Waterbirds (25) 313-318
A decision support system for the management of the Rocky Mountain Population of Trumpeter Swans (Cygnus buccinators) is being developed. As part of this, three expert systems are also in development: one for assessing the quality of Trumpeter Swan breeding habitat; one for making water level recommendations in montane, palustrine...
Geographic Information Systems
2002, Report
Geographic information system (GIS) technology can be used for scientific investigations, resource management, and development planning. For example, a GIS might allow emergency planners to easily calculate emergency response times in the event of a natural disaster, or a GIS might be used to find wetlands that need protection from...
32 - Rock failure and earthquakes
David A. Lockner, Nicholas M. Beeler
2002, International Geophysics (81) 505-537
This chapter summarizes experimental observations and related theoretical developments of faulted and intact rock properties related to earthquake nucleation, failure and dynamic slip. We will be concerned primarily with earthquakes occurring in the brittle crust. Intermediate and deep-focus earthquakes have unique mechanical considerations that are discussed in Section 7. We...
35 - Strength and energetics of active fault zones
James N. Brune, Wayne R. Thatcher
2002, International Geophysics (81) 569-588
The strength of active fault zones, i.e., the shear stress level required to cause fault slip, is fundamental to understanding the physics of earthquakes and to assessing earthquake hazard. Although many researchers have concluded that fault zones are weak (shear stresses 10 MPa or less averaged between 0 and ˜20...
The role of C3 and C4 grasses to interannual variability in remotely sensed ecosystem performance over the US Great Plains
C. Ricotta, B. C. Reed, L.T. Tieszen
2002, Conference Paper, Proceedings of the first international workshop on the analysis of multi-temporal remote sensing images
No abstract available....
Late Devonian sea-level changes, catastrophic events, and mass extinctions
Charles Sandberg, Jared R. Morrow, W. Ziegler
2002, GSA Special Papers (356) 473-487
Late Devonian history is explained through event stratigraphy comprising a sequence of 18 sea-level changes, catastrophic events, and mass extinctions. Generally rising sea level during the initial Frasnian Stage, beginning with the Taghanic onlap and ending with a sea-level fall and major mass extinction, was interrupted by several exceptionally rapid,...
Plasticity in vertical migration by native and exotic estuarine fishes in a dynamic low‐salinity zone
William A. Bennett, Wim J. Kimmerer, Jon R. Burau
2002, Limnology and Oceanography (47) 1496-1507
We investigated the degree of flexibility in retention strategies of young fishes in the low‐salinity zone (LSZ) of the San Francisco Estuary during years of highly variable river flow. We conducted depth‐stratified sampling over three full tidal cycles in each year from 1994 to 1996. In 1994, exotic striped bass...
38 - Electromagnetic fields generated by earthquakes
M.J.S. Johnston
2002, International Geophysics (81) 621-635
Independent knowledge of the physical processes that occur with seismic events can be obtained from observations of electric and magnetic fields generated by these complex processes. During the past few decades, we have seen a remarkable increase in the quality and quantity of electromagnetic (EM) data recorded before and during...
Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska
Norman O. Frederiksen, Lucy E. Edwards, Thomas A. Ager, Thomas P. Sheehan
2002, Palynology (26) 59-93
This paper describes, illustrates, and interprets Eocene palynomorph assemblages from the North Slope of Alaska, mainly from 31 outcrop samples from seven stratigraphic sections at Franklin Bluffs on the Sagavanirktok River. The top of the Sagwon Member of the Sagavanirktok Formation is shown to be a thin, coaly, apparently nonmarine...
