Book Chapters
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 more than 5,500 book chapters 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: 6158
Guidelines to indirectly measure and enhance detection efficiency of stationary PIT tag interrogation systems in streams Guidelines to indirectly measure and enhance detection efficiency of stationary PIT tag interrogation systems in streams
With increasing use of passive integrated transponder (PIT) tags and reliance on stationary PIT tag interrogation systems to monitor fish populations, guidelines are offered to inform users how best to use limited funding and human resources to create functional systems that maximize a desired level of detection and precision. The estimators of detection efficiency and their variability...
Authors
Patrick J. Connolly
Heat tracer methods Heat tracer methods
The flow of heat in the subsurface is closely linked to the movement of water (Ingebritsen et al., 2006). As such, heat has been used as a tracer in groundwater studies for more than 100 years (Anderson, 2005). As with chemical and isotopic tracers (Chapter 7), spatial or temporal trends in surface and subsurface temperatures can be used to infer rates of water movement. Temperature can...
Authors
Richard W. Healy
Historical arroyo formation: documentation of magnitude and timing of historical changes using repeat photography Historical arroyo formation: documentation of magnitude and timing of historical changes using repeat photography
No abstract available.
Authors
Robert H. Webb, Richard Hereford
Hydrogeology of the Markagunt Plateau, Southwestern Utah Hydrogeology of the Markagunt Plateau, Southwestern Utah
The Markagunt Plateau, in southwestern Utah, lies at an altitude of about 9,500 feet and is capped primarily by Quaternary-age basalt that overlies Eocene-age freshwater limestone of the Claron Formation. Over large parts of the Markagunt Plateau, dissolution of the Claron limestone and subsequent collapse of the overlying basalt have produced a terrain characterized by sinkholes as much...
Authors
Lawrence E. Spangler
Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
No abstract available.
Authors
Thomas W. Giambelluca, J. K. DeLay, M.A. Nullet, Martha A. Scholl, Stephen B. Gingerich
Isotope reference materials Isotope reference materials
Measurement of the same isotopically homogeneous sample by any laboratory worldwide should yield the same isotopic composition within analytical uncertainty. International distribution of light element isotopic reference materials by the International Atomic Energy Agency and the U.S. National Institute of Standards and Technology enable laboratories to achieve this goal.
Authors
Tyler B. Coplen
Large-scale laboratory testing of bedload-monitoring technologies: Overview of the StreamLab06 Experiments Large-scale laboratory testing of bedload-monitoring technologies: Overview of the StreamLab06 Experiments
A 3-month-long, large-scale flume experiment involving research and testing of selected conventional and surrogate bedload-monitoring technologies was conducted in the Main Channel at the St. Anthony Falls Laboratory under the auspices of the National Center for Earth-surface Dynamics. These experiments, dubbed StreamLab06, involved 25 researchers and volunteers from academia, government...
Authors
Jeffrey D. G. Marr, John R. Gray, Broderick E. Davis, Chris Ellis, Sara Johnson
Managing undesired and invading fishes Managing undesired and invading fishes
No abstract available.
Authors
Cindy S. Kolar, Walter R. Courtenay, Leo G. Nico
Mapping products of Titan's surface Mapping products of Titan's surface
Remote sensing instruments aboard the Cassini spacecraft have been observed the surface of Titan globally in the infrared and radar wavelength ranges as well as locally by the Huygens instruments revealing a wealth of new morphological features indicating a geologically active surface. We present a summary of mapping products of Titan's surface derived from data of the remote sensing...
Authors
Katrin Stephan, Ralf Jaumann, Erich Karkoschka, Randolph L. Kirk, Jason W. Barnes, Martin G. Tomasko, Elizabeth P. Turtle, Lucille Le Corre, Mirjam Langhans, Stéphane Le Mouélic, Ralph D. Lorenz, Jason Perry
Mapping the last frontier in Yellowstone National Park: Yellowstone Lake Mapping the last frontier in Yellowstone National Park: Yellowstone Lake
No abstract available.
Authors
Lisa A. Morgan, Wayne (Pat) Shanks
Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods
Sand-bed rivers present unique challenges to accurate measurement of the bedload transport rate using the traditional direct sampling methods of direct traps (for example the Helley-Smith bedload sampler). The two major issues are: 1) over sampling of sand transport caused by “mining” of sand due to the flow disturbance induced by the presence of the sampler and 2) clogging of the mesh...
Authors
Robert R. Holmes