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.
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Coal resources for part of the Wilcox group (Paleocene-Eocene), northeast Texas
The Wilcox Group of northeast Texas contains shallow (less than 500 ft) coal deposits that are mined for use in mine-mouth electric power generating plants. The coal deposits, which are lignite in apparent rank (Pierce et al., 2011), are separated from similar shallow coal deposits in the Sabine uplift area by the East Texas Basin (Figure 1). The coal zones and associated strata in the northeast a
Authors
Peter D. Warwick, Claire E. Aubourg, Steven M. Podwysocki, Adam C. Schultz
Coal resources for the Chemard Lake (Naborton No. 2) coal zone of the lower Wilcox group (Paleocene), northwestern Louisiana
The lower part of the Wilcox Group of northwest Louisiana contains shallow (less than 500 ft) coal deposits that are mined for use in mine-mouth electric power-generating plants. The coal deposits, which are lignite A in apparent rank (Pierce et al., 2011), occur on the eastern part of the Sabine uplift (Figure 1). The coal zones and associated strata in the assessment area generally dip away from
Authors
Peter D. Warwick, Steven M. Podwysocki, Adam C. Schultz
Concluding remarks: The way forward for urban ecology
No abstract available.
Authors
J. Niemela, J.H. Breuste, Thomas Elmqvist, Glenn R. Guntenspergen, P. James, N.E. McIntyre
Conclusions and future use of fecal indicator bacteria for monitoring water quality and protecting human health
A summary of the focus and the recurring theme of the book is presented in this chapter. It includes the use of faecal bacteria as an indicator of faecal pollution and water quality, ubiquity of faecal bacteria, and sources and movement of faecal bacteria in the environment.
Authors
Michael J. Sadowsky, Richard L. Whitman
Development of the USGS national land-cover database over two decades
Land-cover composition and change have profound impacts on terrestrial ecosystems. Land-cover and land-use (LCLU) conditions and their changes can affect social and physical environments by altering ecosystem conditions and services. Information about LCLU change is often used to produce landscape-based metrics and evaluate landscape conditions to monitor LCLU status and trends over a specific tim
Authors
George Z. Xian, Collin G. Homer, Limin Yang
Distal signatures of Late Ordovician oceanic anoxia—New data from a classic epeiric ramp transect
No abstract available.
Authors
Patrick I. McLaughlin, Norlene Emerson, Brian Witzke, Bryan Sell, Poul Emsbo
Early detection and rapid response
Prevention is the first line of defense against introduced invasive species - it is always preferable to prevent the introduction of new invaders into a region or country. However, it is not always possible to detect all alien hitchhikers imported in cargo, or to predict with any degree of certainty which introduced species will become invasive over time. Fortunately, the majority of introduced pl
Authors
Randy G. Westbrooks, Robert E. Eplee
Earthquake casualty models within the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) system
Since the launch of the USGS’s Prompt Assessment of Global Earthquakes for Response (PAGER) system in fall of 2007, the time needed for the U.S. Geological Survey (USGS) to determine and comprehend the scope of any major earthquake disaster anywhere in the world has been dramatically reduced to less than 30 min. PAGER alerts consist of estimated shaking hazard from the ShakeMap system, estimates o
Authors
Kishor Jaiswal, David J. Wald, Paul S. Earle, Keith A. Porter, Mike Hearne
Effects of model layer simplification using composite hydraulic properties
Groundwater provides much of the fresh drinking water to more than 1.5 billion people in the world (Clarke et al., 1996) and in the United States more that 50 percent of citizens rely on groundwater for drinking water (Solley et al., 1998). As aquifer systems are developed for water supply, the hydrologic system is changed. Water pumped from the aquifer system initially can come from some combinat
Authors
Eve L. Kuniansky, Nicasio Sepúlveda
Environmental sources of fecal bacteria
This chapter provides a review of the research on environmental occurrences of faecal indicator bacteria in a variety of terrestrial and aquatic habitats under different geographic and climatic conditions, and discusses how these external sources may affect surface water quality.
Authors
Muruleedhara N. Byappanahalli, Satoshi Ishii
Eocene bituminous coal deposits of the Claiborne group, Webb County, Texas
Two bituminous coal zones, the San Pedro and the Santo Tomas, in the middle Eocene Claiborne Group of Webb County, south Texas (Figure 1), are among the coal resources that are not evaluated quantitatively as part of the current Gulf Coastal Plain coal resource assessment. Coal beds within these zones were mined by underground methods northwest of Laredo until 1939 and have been intermittently min
Authors
Robert W. Hook, Peter D. Warwick