Effectiveness of an electrical barrier in blocking a sea lamprey spawning migration on the Jordan River, Michigan
William D. Swink
1999, North American Journal of Fisheries Management (19) 397-405
Mark-recapture studies indicated that a pulsed-DC electrical barrier set to a 2-ms pulse width and 10 pulses/s completely blocked the spawning migration of sea lampreys Petromyzon marinus in the Jordan River, Michigan. Capture efficiency of fyke nets averaged 24% for four groups, about 300 tagged sea lampreys each, released upstream...
Postflood persistence and recolonization of endangered tidewater goby populations
Kevin Lafferty, Camm C. Swift, Richard F. Ambrose
1999, North American Journal of Fisheries Management (19) 618-622
Before-and-after surveys at several southern California sites indicated that populations of endangered tidewater goby Eucyclogobius newberryi persisted through heavy flooding in 1995. This was contrary to our expectations that flooding might have led to extirpation in some smaller wetlands. There was also no significant change in tidewater goby density before...
An evaluation of six internal anchor tags for tagging juvenile striped bass
A. Henderson-Arzapalo, P. Rago, J. Skjeveland, M. Mangold, P. Washington, J. Howe, T. King
1999, North American Journal of Fisheries Management (19) 482-493
Six types of internal anchor tags were compared for retention, legibility, and durability in tagging juvenile (age-0) striped bass Morone saxatilis. Tank-reared striped bass (120–200 mm total length) were tagged with coded wire tags and one of six types of internal anchor tags (500 fish each tag type and two...
Does Europa have a subsurface ocean? Evaluation of the geological evidence
Robert T. Pappalardo, Michael J.S. Belton, H.H. Breneman, M. H. Carr, Clark R. Chapman, G.C. Collins, T. Denk, S. Fagents, Paul E. Geissler, B. Giese, R. Greeley, R. Greenberg, J.W. Head, P. Helfenstein, G. Hoppa, S.D. Kadel, K.P. Klaasen, James E. Klemaszewski, K.P. Magee, Alfred S. McEwen, J. M. Moore, W.B. Moore, G. Neukum, C. B. Phillips, L.M. Prockter, G. Schubert, D.A. Senske, R.J. Sullivan, B.R. Tufts, E. P. Turtle, Robert Wagner, K.K. Williams
1999, Journal of Geophysical Research: Planets (104) 24015-24055
It has been proposed that Jupiter's satellite Europa currently possesses a global subsurface ocean of liquid water. Galileo gravity data verify that the satellite is differentiated into an outer H2O layer about 100 km thick but cannot determine the current physical state of this layer (liquid or solid). Here we...
The Fish Canyon Tuff: a standard for geochronology
M. A. Lanphere, H. Baadsgaard
1999, Bulletin of Liaison and Informations, Phanerozoic Time Scale (15) 20-21
Selected hydrologic features of Lake Tahoe Basin and surrounding area, California and Nevada, 1998
J. LaRue Smith, J. Christopher Stone, Timothy G. Rowe, James V. Gardner
1999, Open-File Report 98-649
No abstract available....
Georgia
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 011-99
Magnitude and Significance of Carbon Burial in Lakes, Reservoirs, and Northern Peatlands
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 058-99
It is estimated that freshwater lakes in the world have a total area of about 1.5x1012 m2 (Shiklomanov, 1993; table 1). Including saline inland seas in this total would add another 1x1012 m2. The 28 largest (area of each > 5,000 km2) freshwater lakes in the world have a total...
Field test of two energetic models for yellow perch
J.S. Schaeffer, R.C. Haas, J.S. Diana, J.E. Breck
1999, Transactions of the American Fisheries Society (128) 414-435
Field data from a population of yellow perch Perca flavescens in Saginaw Bay, Lake Huron, were used to evaluate the ability of two energetic models to predict consumption by yellow perch. Field estimates of daily ration for age‐1–4 fish during May through October 1987 and 1988 were compared with...
Vertical migration and nighttime distribution of adult bloaters in Lake Michigan
Leslie M. TeWinkel, Guy W. Fleischer
1999, Transactions of the American Fisheries Society (128) 459-474
The vertical migration and nighttime vertical distribution of adult bloaters Coregonus hoyi were investigated during late summer in Lake Michigan using acoustics simultaneously with either midwater or bottom trawling. Bloaters remained on or near bottom during the day. At night, bloaters were distributed throughout 30–65 m of water, depending...
Mapping the Sea Floor Geology Offshore of the New York-New Jersey Metropolitan Area
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 133-98
Map showing the potential for mineral deposits associated with Precambrian mafic and ultramafic rocks in the Blacktail and Henrys Lake Mountains and the Greenhorn and Ruby Ranges of southwestern Montana
Jane M. Hammarstrom, Bradley S. Van Gosen, Robert R. Carlson, Dolores M. Kulik
1999, Open-File Report 98-224-D
In response to requests from the Bureau of Land Management (BLM) and the U.S. Forest Service (USFS), the U.S. Geological Survey (USGS) conducted a mineral resource assessment in the Dillon BLM Resource Area in Beaverhead and Madison Counties, southwestern Montana. These agencies use mineral resource data in creating and updating...
Can prescribed fire save the endangered coastal prairie ecosystem from Chinese Tallow invasion?
James B. Grace
1999, Wildland Weeds (2) 9-14
No abstract available....
Cenozoic basins of the Death Valley extended terrane as reflected in regional-scale gravity anomalies
Richard J. Blakely, Robert C. Jachens, James P. Calzia, Victoria Langenheim
1999, GSA Special Papers (333) 1-16
The contrast in density between basin-filling deposits and underlying basement rocks in the Basin and Range province produces a distinctive pattern of gravity anomalies that roughly correlates with basin-and-range topography. This is especially apparent in the Death Valley extended terrane, where minima in residual gravity closely correspond to well-known extensional...
Rice pesticide concentrations in the Colusa Basin Drain and the Sacramento River, California, 1990-1993
Kathryn L. Crepeau, Kathryn M. Kuivila
1999, Journal of Environmental Quality (29) 926-935
The pesticides molinate, thiobencarb, and carbofuran are applied to rice (Oryza sativa L.) fields in the Sacramento Valley, California, each year during April through June. These pesticides are of concern because of their adverse effects on water quality and their potential adverse effects on aquatic life. Therefore, the California Regional...
Observations of Phobos, Deimos, and bright stars with the Imager for Mars Pathfinder
Nick Thomas, D.T. Britt, Kenneth E. Herkenhoff, Scott L. Murchie, B. Semenov, H.U. Keller, P. H. Smith
1999, Journal of Geophysical Research E: Planets (104) 9055-9068
The Imager for Mars Pathfinder (IMP) was used to observe several objects during the Martian night. The satellites, Phobos and Deimos, were observed on two occasions each, through the IMP geological filters covering the wavelength range 440 nm to 1 μm. The observations were converted to geometric albedo using triaxial...
Mars Pathfinder spectral measurements of Phobos and Deimos: Comparison with previous data
Scott L. Murchie, Nick Thomas, Daniel Britt, Kenneth E. Herkenhoff, James F. Bell
1999, Journal of Geophysical Research E: Planets (104) 9069-9079
The Imager for Mars Pathfinder (IMP) acquired four spectra of parts of the sub‐Mars hemispheres of Phobos and Deimos. The measured region of Phobos is expected to be a mixture of the two spectral units identified on that satellite from Phobos 2 data, and the IMP spectra of Phobos are...
Paleozoic and Mesozoic rocks of Stikinia exposed in northwestern British Columbia: Implications for correlations in the northern Cordillera: Discussion and reply
S.T. Johnston, M.G. Mihalynuk, David A. Brew, Craig J. R. Hart, Philippe Erdmer, G.E. Gehrels, Lisel Currie, R.R. Parrish
1999, GSA Bulletin (111) 1103-1106
No abstract available....
Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly: Discussion and Reply
M.G. Mihalynuk, JoAnne L. Nelson, Donald Murphy, David A. Brew, Philippe Erdmer, V. L. Hansen, D.H. Oliver
1999, GSA Bulletin (111) 1416-1422
No abstract available....
Pool 13 drawdown: Predicting success rates and affected areas
James T. Rogala, Joseph H. Wlosinski, Kevin J. Landwehr
1999, Long Term Resource Monitoring Program Technical Report 99-T002
The likelihood of 1- or 2-foot drawdowns, and the area affected by such alternative drawdowns, was estimated for Pool 13 on the Upper Mississippi River. Minimum water surface (elevation) requirements were compared to computed water surface profiles to determine a critical low flow that would allow a navigation channel 400...
Testing water quality for pesticide pollution: U.S. Geological Survey investigations reveal widespread contamination of the nation's water resources
Robert J. Gilliom, Jack E. Barbash, Dana W. Kolpin, Steven J. Larson
1999, Environmental Science & Technology (33) 164A-169A
No abstract available....
Acute toxicity and sublethal effects of white phosphorus in mute swans, Cygnus olor
D. W. Sparling, D. Day, P. Klein
1999, Archives of Environmental Contamination and Toxicology (36) 316-322
Among the waterfowl affected by white phosphorus (P4) at a military base in Alaska are tundra (Cygnus columbianus) and trumpeter (C. buccinator) swans. To estimate the toxicity of P4 to swans and compare the toxic effects to those of mallards (Anas platyrhynchos), we dosed 30 juvenile mute swans (C. olor) with...
Overview of the Mars Pathfinder Mission: Launch through landing, surface operations, data sets, and science results
M. P. Golombek, R. C. Anderson, J.R. Barnes, J. F. Bell, N. T. Bridges, D.T. Britt, J. Bruckner, R. A. Cook, D. Crisp, J.A. Crisp, T. Economou, W. M. Folkner, R. Greeley, R.M. Haberle, R.B. Hargraves, J.A. Harris, A. F. C. Haldemann, Kenneth E. Herkenhoff, S.F. Hviid, R. Jaumann, J. R. Johnson, P. H. Kallemeyn, H.U. Keller, Randolph L. Kirk, J. M. Knudsen, S. Larsen, M. T. Lemmon, M.B. Madsen, J.A. Magalhaes, J.N. Maki, M.C. Malin, R. M. Manning, J. Matijevic, H.Y. McSween Jr., H. J. Moore, S.L. Murchie, J.R. Murphy, T. J. Parker, R. Rieder, T.P. Rivellini, J. T. Schofield, A. Seiff, R.B. Singer, P. H. Smith, Laurence A. Soderblom, D.A. Spencer, C. R. Stoker, R. Sullivan, N. Thomas, S.W. Thurman, M.G. Tomasko, R. M. Vaughan, H. Wänke, A. W. Ward, G.R. Wilson
1999, Journal of Geophysical Research E: Planets (104) 8523-8553
Mars Pathfinder successfully landed at Ares Vallis on July 4, 1997, deployed and navigated a small rover about 100 m clockwise around the lander, and collected data from three science instruments and ten technology experiments. The mission operated for three months and returned 2.3 Gbits of data, including over 16,500...
Environmental characteristics and water quality of hydrologic benchmark network stations in the Eastern United States, 1963-95
M. Alisa Mast, John T. Turk
1999, Circular 1173-A
The information in this report was compiled to aid in the application and interpretation of historical water-quality data collected as part of the U.S. Geological Survey Hydrologic Benchmark Network program, which was established in 1963 to provide long-term measurements of streamflow and water quality in areas that are minimally affected...
Interactions between northern elephant seals and vehicles near Point Piedras Blancas, California
Brian B. Hatfield, Galen B. Rathbun
1999, Marine Mammal Science (15) 598-600
Northern elephant seals, Mirounga angustirostris, were nearly extirpated in the late 19th and early 20th centuries. However, they have recovered to the point where they are now locally abundant (Stewart e t al. 1994). Stimulated by the report of human/northern elephant seal interactions in Baja California Sur (Webster and Baird...
