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Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 1,000 books authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 971
Large-scale hydrothermal fluid discharges in the Norris-Mammoth corridor, Yellowstone National Park, USA
Norris–Mammoth corridor is a complex subsidence structure that extends ∼40 km northward from the 0.6 Ma Yellowstone caldera, and contains many hydrothermal features with high fluid discharges totaling ∼1000 l/s. About 150–250 l/s of hydrothermal water, which attains boiling temperature at surface and 360°C at depth, discharge from the Norris Geyser Basin, adjacent to the caldera. The highest therm
Authors
Y.K. Kharaka, M. L. Sorey, J.J. Thordsen
Leakage of active crater lake brine through the north flank at Rincon de la Vieja volcano, northwest Costa Rica, and implications for crater collapse
The Active Crater at Rincon de la Vieja volcano, Costa Rica, reaches an elevation of 1750 m and contains a warm, hyper-acidic crater lake that probably formed soon after the eruption of the Rio Blanco tephra deposit approximately 3500 years before present. The Active Crater is buttressed by volcanic ridges and older craters on all sides except the north, which dips steeply toward the Caribbean coa
Authors
K.A. Kempter, G.L. Rowe
Managers' summary - Ecological studies of the Pryor Mountain Wild Horse Range, 1992-1997
Ecological Studies of the Pryor Mountain Wild Horse Range, 1992-1997 provides a synthesis of key findings of landscape-scale, interdisciplinary studies of the effects of wild horses and native ungulates on a rugged, mountain ecosystem. This is perhaps the most comprehensive study of a wild horse herd conducted. This was a complex study and one involving a truly interagency approach. Six agencie
Authors
F. J. Singer, K.A. Schoenecker
National Fish Strain Registry - Catfish (NFSR-C) Operating Manual
No abstract available at this time
Authors
H. L. Kincaid, L.J. Mengel, M.J. Gray, S. Brimm
National Fish Strain Registry - Catfish (NFSR-C) Species Tables on Reported Populations and Broodstocks
No abstract available at this time
Authors
H. L. Kincaid, L.J. Mengel, S. Brimm
Non-destructive measurement of soil liquefaction density change by crosshole radar tomography, Treasure Island, California
A ground penetrating radar (GPR) experiment at the Treasure Island Test Site [TILT] was performed to non-destructively image the soil column for changes in density prior to, and following, a liquefaction event. The intervening liquefaction was achieved by controlled blasting. A geotechnical borehole radar technique was used to acquire high-resolution 2-D radar velocity data. This method of non-des
Authors
Robert E. Kayen, Walter A. Barnhardt, Scott Ashford, Kyle Rollins
North American Bird Conservation Initiative: Bringing it all together
No abstract available.
Authors
J. R. Clark, D. Waller, J.A. Kushlan, G.T. Myers, S. Senner, S. Yaich, G. Vandel, G. Fenwick, V. Mezainis, R.D. Sparrowe, A. Wentz, D. Pashley
Plant Checklist for Point Reyes National Seashore (Revised)
No abstract available at this time
Authors
Gary M. Fellers, Virginia Norris, Wilma Follette, Doreen Smith