Aquatic invertebrate production in southeastern USA wetlands during winter and spring
Walter G. Duffy, Douglas LaBar
1994, Wetlands (14) 88-97
We measured aquatic invertebrate abundance, standing stock biomass, and community production in three types of wetlands on Noxubee National Wildlife Refuge from December 1987 through April 1988. Together, Orthocyclops modestus and Daphnia pulex were the most abundant organisms collected in all habitats during both winter and spring, but each contributed little to total standing...
Preliminary U-series disequilibrium and thermoluminescence ages of surficial deposits and paleosols associated with Quaternary faults, eastern Yucca Mountain
James B. Paces, Christopher M. Menges, B. Wildmann, J. R. Wesling, Charles A. Bush, Kiyoto Futa, H. T. Millard, P. B. Maat, John W. Whitney
1994, Conference Paper, High Level Radioactive Waste Management 1994
No abstract available....
Instream flows and cottonwood establishment in the Bosque del Apache reach of the Rio Grande
Robert T. Milhous
1994, Book, Proceedings of the Annual Summer Symposium of the American Water Resources Association: Effects of human-induced hydrologic systems
No abstract available....
Gravity survey of the Mount Toondina impact structure, South Australia
J. B. Plescia, Eugene Merle Shoemaker, Carolyn S. Shoemaker
1994, Journal of Geophysical Research E: Planets (99) 13167-13179
Gravity and seismic reflection data, together with geologic mapping, indicate that the Mount Toondina feature in South Australia is best interpreted as an eroded 4-km-diameter impact structure consisting of a ring structural depression surrounding a pronounced central uplift. Beds at the center of the structure within the...
Prospects for watershed effects owing to a changing climate
R. Herrmann
1994, Book, Proceedings of the AWWA annual meeting
No abstract available....
The North American Breeding Bird Survey
B. Peterjohn
1994, Birding (26) 386-398
No abstract available....
MAPS is for the birds
David L. Watts, Daniel J. Twedt, Allan J. Mueller
1994, Mississippi Outdoors (57) 6-9
No abstract available...
Anticholinesterase exposure of white-winged doves breeding in lower Rio Grande valley, Texas
T.C. Tacha, S.J. Schacht, R.R. George, E. F. Hill
1994, Journal of Wildlife Management (58) 213-217
We studied exposure of breeding white-winged doves (Zenaida asiatica) to anticholinesterase compounds (organophosphorus and carbamate pesticides) in the Lower Rio Grande Valley (LRGV), Texas. Widespread use of organophosphorus pesticides and dove population declines prompted the study. We collected breeding adult doves in May and July 1991 (n = 28) and...
Environmental contaminants in nonviable eggs of the endangered Mississippi sandhill crane (Grus canadensis pulla)
Donald H. White, Clifford P. Rice, David J. Hoffman, George F. Gee
1994, Environmental Monitoring and Assessment (31) 225-232
Our objectives were to determine if concentrations of environmental pollutants and microbial contamination in nonviable eggs of the endangered Mississippi sandhill crane (Grus canadensis pulla) contributed to egg failure. Six eggs collected in 1990 and four in 1991 contained only background levels of organochlorine pesticides and polychlorinated biphenyls (PCBs), and...
Hydrogeology, simulation of regional ground-water flow, and saltwater intrusion, Potomac-Raritan-Magothy Aquifer System, Northern Coastal Plain of New Jersey
Amleto A. Pucci Jr., Daryll A. Pope, JoAnn M. Gronberg
1994, New Jersey Geological Survey Report 36
The Potomac-Raritan-Magothy aquifer system in Middlesex and Monmouth Counties in the northern Coastal Plain of New Jersey consists primarily of unconsolidated Cretaceous sediments, which are divided into the upper and middle aquifers and confining units. These units, which strike northeastsouthwest along the Fall Line, dip and thicken to the southeast....
Annual report of the USGS Mission, Kingdom of Saudi Arabia, for the fiscal year 1993
U.S. Geological Survey Saudi Arabia Mission
1994, Technical Report USGS-TR-94-1
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia. ...
Seismic guided waves trapped in the fault zone of the Landers, California, earthquake of 1992
Keiiti Aki, David L. Adams, Akiko Hasemi, W.H.K. Lee
1994, Journal of Geophysical Research B: Solid Earth (99) 11705-11722
A mobile seismic array of seven stations was deployed at 11 sites along the fault trace of the M7.4 Landers earthquake of June 28, 1992, with a maximum offset of 1 km from the trace. We found a distinct wave train with a relatively long period following the S waves...
The wetlands of Acadia National Park and vicinity
A.J.K. Calhoun, J.E. Cormier, R.B. Owen Jr., A.F. O'Connell Jr., C. T. Roman, R.W. Tiner Jr.
1994, Miscellaneous Publication 721
No abstract available....
University of Minnesota Aquifer Thermal-Energy Storage (ATES) project report on the third long-term cycle
M.C. Hoyer, J.P. Hallgren, M.H. Uebel, G. N. Delin, Steven J. Eisenreich, R.L. Sterling
1994, Report
No abstract available....
Accessing northern California earthquake data via Internet
B. Romanowicz, Doug Neuhauser, B.M. Bogaert, David H. Oppenheimer
1994, Eos Science News (75) 257-260
The Northern California Earthquake Data Center (NCEDC) provides easy access to central and northern California digital earthquake data. It is located at the University of California, Berkeley, and is operated jointly with the U.S. Geological Survey (USGS) in Menlo Park, Calif., and funded by the University of California and the...
An assessment of riparian environmental quality by using butterflies and disturbance susceptibility scores
S. Mark Nelson, Douglas C. Andersen
1994, Southwestern Naturalist (39) 137-142
The butterfly community at a revegetated riparian site on the lower Colorado River near Parker, Arizona, was compared to that found in a reference riparian site. Data indicated that the herbaceous plant community, which was lacking at the revegetated site, was important to several butterfly taxa. An index...
Habitat use by an endangered riverine fish and implications for species protection
B. J. Freeman, Mary C. Freeman
1994, Ecology of Freshwater Fish (3) 49-58
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas < 20 cm deep and with velocity < 10 cm....
CASERTZ aeromagnetic data reveal late Cenozoic flood basalts(?) in the West Antarctic rift system
John C. Behrendt, D. D. Blankenship, Carol A. Finn, Robin E. Bell, Ronald E. Sweeney, Steven M. Hodge, John M. Brozena
1994, Geology (22) 527-530
The late Cenozoic volcanic and tectonic activity of the enigmatic West Antarctic rift system, the least understood of the great active continental rifts, has been suggested to be plume driven. In 1991-1992, as part of the CASERTZ (Corridor Aerogeophysics of the Southeast Ross Transect Zone) program, an ∼25000 km aeromagnetic...
Piezometer performance at Wildlife liquefaction site, California
T. Leslie Youd, Thomas L. Holzer
1994, Journal of Geotechnical Engineering (120) 975-995
In response to an urgent need for field data from instrumented liquefaction sites, the U.S. Geological Survey in 1982 selected and instrumented a site in southern California called the Wildlife site. Two accelerometers (one at ground surface and one at a depth of 7.5 m) and six electrical pore‐pressure transducers...
Petrogenesis of the highly potassic 1.42 Ga Barrel Spring pluton, southeastern California, with implications for mid-Proterozoic magma genesis in the southwestern USA
James D. Gleason, Calvin F. Miller, J. L. Wooden, Victoria C. Bennett
I. S. E. Carmichael, editor(s)
1994, Contributions to Mineralogy and Petrology (118) 182-197
Syenites from the Barrel Spring pluton were emplaced in the Early Proterozoic Mojave crustal provine of southeastern California at 1.42 Ga. All rocks, even the most mafic, are highly enriched in incompatible elements (e.g. K2O 4–12 wt%, Rb 170–370 ppm, Th 12–120 ppm, La 350–1500xchondrite, La/Ybn 35–100)....
Extremal bounds on earthquake movement from geodetic data: Application to the Landers earthquake
Hadley O. Johnson, Duncan Carr Agnew, Ken Hudnut
1994, Bulletin of the Seismological Society of America (84) 660-667
We present a technique to place quantifiable bounds on the moment of an earthquake from geodetic data, assuming known fault geometry. Application of this technique to the 1992 Landers earthquake shows that the moment must have been between 0.84 and 1.15 × 1020 Nm with 90% confidence (M 7.25 to...
Foreshocks, aftershocks, and earthquake probabilities: Accounting for the landers earthquake
Lucile M. Jones
1994, Bulletin of the Seismological Society of America (84) 892-899
The equation to determine the probability that an earthquake occurring near a major fault will be a foreshock to a mainshock on that fault is modified to include the case of aftershocks to a previous earthquake occurring near the fault. The addition of aftershocks to the background seismicity makes its...
Pen rearing and imprinting of fall Chinook salmon
J.W. Beeman, J.F. Novotny
1994, Report
Results of rearing upriver bright fall chinook salmon juveniles in net pens and a barrier net enclosure in two backwater areas and a pond along the Columbia River were compared with traditional hatchery methods. Growth, smoltification, and general condition of pen-reared fish receiving supplemental feeding were better than those of...
Triggered seismicity and deformation between the Landers, California, and Little Skull Mountain, Nevada, earthquakes
Paul Bodin, Joan Gomberg
1994, Bulletin of the Seismological Society of America (84) 835-843
This article presents evidence for the channeling of strain energy released by the Ms = 7.4 Landers, California, earthquake within the eastern California shear zone (ECSZ). We document an increase in seismicity levels during the 22-hr period starting with the Landers earthquake and culminating 22 hr later with the...
Southern surface rupture associated with the M 7.3 1992 Landers, California, earthquake
S. E. Hough
1994, Bulletin of the Seismological Society of America (84) 817-825
Although most evidence suggests that the 28 June 1992 M 7.3 Landers earthquake ruptured unilaterally north, significant surface rupture was mapped on the Eureka Peak and Burnt Mountain faults, to the south of the Landers epicenter. An eyewitness account reports that surface rupture occurred on the northern Eureka Peak fault...
