Conference Papers
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 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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UHF RiverSonde observations of water surface velocity at Threemile Slough, California
A UHF RiverSonde system, operating near 350 MHz, has been in operation at Threemile Slough in central California, USA since September 2004. The water in the slough is dominated by tidal effects, with flow reversals four times a day and a peak velocity of about 0.8 m/s in each direction. Water level and water velocity are continually measured by the U. S. Geological Survey at the experiment site. T
Authors
C.C. Teague, D.E. Barrick, P.M. Lilleboe, R. T. Cheng, C.A. Ruhl
United States geological survey's reserve-growth models and their implementation
The USGS has developed several mathematical models to forecast reserve growth of fields both in the United States (U.S.) and the world. The models are based on historical reserve growth patterns of fields in the U.S. The patterns of past reserve growth are extrapolated to forecast future reserve growth. Changes of individual field sizes through time are extremely variable, therefore, the reserve g
Authors
T. R. Klett
Use of decision support systems as a drought management tool
Droughts present a unique challenge to water managers throughout the world and the current drought in the western United States is taxing facilities to the limit. Coping with this severe drought requires state of the art decision support systems including efficient and accurate hydrologic process models, detailed hydrologic data bases and effective river systems management modeling frameworks. Thi
Authors
D. Frevert, H. Lins
Use of isotopes, age-dating, and numerical simulation to evaluate source histories and transport of NO3- to public supply wells in principal aquifers of the United States
No abstract available.
Authors
P. B. McMahon, John K. Böhlke, C. Brown, K. Burow, C. A. Crandall, Matthew K. Landon
USGS assessment of oil and gas resource potential of the San Joaquin Basin, California
The assessment of oil and gas resource potential of the San Joaquin Basin, California, by the U.S. Geological Survey, is discussed. Two categories of future additions to reserves were evaluated, first was resource in undiscovered accumulations and second was growth of reserves in already discovered accumulations. The mean estimate of undiscovered oil resources is 393 barrels. The greatest potentia
Authors
Marilyn E. Tennyson, A.H. Scheirer, D. L. Gautier
Using soil redistribution to understand soil organic carbon redistribution and budgets
Patterns of soil organic carbon (SOC) vary across the landscape leading to uncertainties in SOC budgets, especially for agricultural areas where water, wind, and tillage erosion redistribute soil and SOC. This study determined SOC patterns related to soil redistribution in small agricultural fields. Soil redistribution patterns were determined using the fallout caesium-137 technique in agricultura
Authors
J.C. Ritchie, G.W. McCarty, E.R. Venteris, T.C. Kaspar
Variation in fire regimes of the rocky mountains: Implications for avian communities and fire management
Information about avian responses to fire in the U.S. Rocky Mountains is based solely on studies of crown fires. However, fire management in this region is based primarily on studies of low-elevation ponderosa pine (Pinus ponderosa) forests maintained largely by frequent understory fires. In contrast to both of these trends, most Rocky Mountain forests are subject to mixed severity fire regimes. A
Authors
V.A. Saab, Hugo D. W. Powell, N.B. Kotliar, K.R. Newlon
Vegetation changes over 12 years in ungrazed and grazed Conservation Reserve Program Grasslands in the central and southern plains
The Conservation Reserve Program (CRP) established under the 1985 Food Security Act has the fundamental objectives of jointly providing economic support to segments of the agricultural community and conservation of natural resources (Osborn, 1997; Heard and others, 2000). Although soil loss on highly erodable lands was the principal natural resource conservation issue addressed in the 1985 CRP, im
Authors
Brian S. Cade, Mark W. Vandever, Arthur W. Allen, James W. Terrell
Volcano surveillance by ACR silver fox
Recent growth in the business of unmanned air vehicles (UAVs) both in the US and abroad has improved their overall capability, resulting in a reduction in cost, greater reliability and adoption into areas where they had previously not been considered. Uses in coastal and border patrol, forestry and agriculture have recently been evaluated in an effort to expand the observed area and reduce surveil
Authors
M.C.L. Patterson, A. Mulligair, J. Douglas, J. Robinson, J.S. Pallister
Wolf population persistence in real life
Wolf (Canis lupus) populations tend to be resilient and to persist for long periods, and several characteristics contribute to their resilience and persistence: (1) age of first reproduction (2-3 years), (2) high annual litter size (mean = 6), (3) low dispersal age (1-3 years), and (4) long potential dispersal distance (< 880 km). The only documented factor leading to extinction of well establishe
Authors
L. D. Mech
Nitrogen transformations in hot spring runoff, Yellowstone National Park, WY
No abstract available.
Authors
JoAnn M. Holloway, D. Kirk Nordstrom, R. L. Smith
Combined use of borehole geophysics and packers to site potable wells in a contaminated area in Montville, Connecticut
A leaking underground gasoline tank contaminated a crystalline bedrock aquifer in Montville, Connecticut, USA with MTBE and benzene. At the original residential bedrock supply wells, the median MTBE concentration was 165 micrograms per liter (mg/L), and the median benzene concentration was 320 mg/L. The maximum concentrations of MTBE and benzene were 4,300 mg/l and 1,700 mg/L, respectively. Becaus
Authors
A. Green, John W. Lane, Carole D. Johnson, John H. Williams, Remo A. Mondazzi, Peter K. Joesten