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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.
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The Chuar Petroleum System, Arizona and Utah
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source rocks, and in particular the Walcott Member of the Kwagunt Formation. I
Authors
Paul G. Lillis
Uncertainty quantification and propagation for projections of extremes in monthly area burned under climate change: A case study in the coastal plain of Georgia, USA
Human‐caused climate change is predicted to affect the frequency of hazard‐linked extremes. Unusually large wildfires are a type of extreme event that is constrained by climate and can be a hazard to society but also an important ecological disturbance. This chapter focuses on changes in the frequency of extreme monthly area burned by wildfires for the end of the 21st century for a wildfire‐prone
Authors
Adam J. Terando, Brian J. Reich, Krishna Pacifici, Jennifer Costanza, Alexa McKerrow, Jaime A. Collazo
Using large-scale flow experiments to rehabilitate Colorado River ecosystem function in Grand Canyon: Basis for an adaptive climate-resilient strategy
Adaptive management of Glen Canyon Dam is improving downstream resources of the Colorado River in Glen Canyon National Recreation Area and Grand Canyon National Park. The Glen Canyon Dam Adaptive Management Program (AMP), a federal advisory committee of 25 members with diverse special interests tasked to advise the U.S. Department of the Interior), was established in 1997 in response to the 1992 G
Authors
Theodore S. Melis, William E. Pine, Josh Korman, Michael D. Yard, Shaleen Jain, Roger S. Pulwarty
Management implications of brood division in Golden-winged Warblers
Brood division in the postfledging period is a common avian behavior that is not well understood. Brood division has been reported in Golden-winged Warblers (Vermivora chrysoptera), but it is not known how common this behavior is, whether males and females exhibit different strategies related to parental care and habitat use, or how brood division might influence management strategies. We radiomar
Authors
Sean M. Peterson, Henry M. Streby, David E. Andersen
Critical elements in Carlin, epithermal, and orogenic gold deposits
Carlin, epithermal, and orogenic gold deposits, today mined almost exclusively for their gold content, have similar suites of anomalous trace elements that reflect similar low-salinity ore fluids and thermal conditions of metal transport and deposition. Many of these trace elements are commonly referred to as critical or near-critical elements or metals and have been locally recovered, although ty
Authors
Richard J. Goldfarb, Albert H. Hofstra, Stuart F. Simmons
Streamflow data
Streamflow data are vital for a variety of water-resources issues, from flood warning to water supply planning. The collection of streamflow data is usually an involved and complicated process. This chapter serves as an overview of the streamflow data collection process. Readers with the need for the detailed information on the streamflow data collection process are referred to the many references
Authors
Gregg J. Wiche, Robert R. Holmes
Application of decision science to resilience management in Jamaica Bay
This book highlights the growing interest in management interventions designed to enhance the resilience of the Jamaica Bay socio-ecological system. Effective management, whether the focus is on managing biological processes or human behavior or (most likely) both, requires decision makers to anticipate how the managed system will respond to interventions (i.e., via predictions or projections).
Authors
Mitchell J. Eaton, Angela K. Fuller, Fred A. Johnson, M. P. Hare, Richard C. Stedman
Hanson Russian River Ponds floodplain restoration: Feasibility study and conceptual design; Appendix G: Physical evaluation of the restoration alternatives
Appendix G: Hanson Russian River Ponds Floodplain Restoration: Feasibility Study and Conceptual Design |G-1Appendix GPhysical Evaluation of the Restoration AlternativesRichard McDonald and Jonathan Nelson, PhDU.S. Geological Survey Geomorphology and Sediment Transport Laboratory, Golden, ColoradoIntroductionTo assess the relative and overall impacts of the scenarios proposed in Chapters 7 and 9,(S
Authors
Richard R. McDonald, Jonathan M. Nelson
Karst
Karst areas present unique hydrologic and hydrogeological characteristics that
are often challenging to investigate. These characteristics are largely dependent
on the extent of development of solution conduits within the underlying bedrock,
and the resulting integration of surface and subsurface drainage components
into a karst aquifer system. The investigation and characterization of
karst aquif
Authors
C.J. Taylor, D.H. Doctor
Dynamic distributions and population declines of Golden-winged Warblers
With an estimated breeding population in 2010 of 383,000 pairs, the Golden-winged Warbler (Vermivora chrysoptera) is among the most vulnerable and steeply declining of North American passerines. This species also has exhibited among the most dynamic breeding distributions, with populations expanding and then contracting over the past 150 years in response to regional habitat changes, interactions
Authors
Kenneth V. Rosenberg, Tom Will, David A. Buehler, Sara Barker Swarthout, Wayne E. Thogmartin, Ruth E. Bennett, Richard Chandler
Expert elicitation of population-level effects of disturbance
Expert elicitation is a rigorous method for synthesizing expert knowledge to inform decision making and is reliable and practical when field data are limited. We evaluated the feasibility of applying expert elicitation to estimate population-level effects of disturbance on marine mammals. Diverse experts estimated parameters related to mortality and sublethal injury of North Atlantic right whales
Authors
Erica Fleishman, Mark Burgman, Michael C. Runge, Robert S Schick, Scott Krauss
Geology, selected geophysics, and hydrogeology of the White River and parts of the Great Salt Lake Desert regional groundwater flow systems, Utah and Nevada
The east-central Great Basin near the Utah-Nevada border contains two great
groundwater flow systems. The first, the White River regional groundwater
flow system, consists of a string of hydraulically connected hydrographic basins
in Nevada spanning about 270 miles from north to south. The northernmost
basin is Long Valley and the southernmost basin is the Black Mountain area, a
valley bord
Authors
Peter D. Rowley, Gary L. Dixon, James M. Watrus, Andrews G. Burns, Edward A. Mankinen, Edwin H. McKee, Keith T. Pari, E. Bartlett Ekren, William G. Patrick