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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.
Filter Total Items: 6197
ADMAP: A Digital Magnetic Anomaly Map of the Antarctic ADMAP: A Digital Magnetic Anomaly Map of the Antarctic
For a number of years the multi-national ADMAP working group has been compiling near surface and satellite magnetic data in the region south of 60° S. By the end of 2000, a 5 km grid of magnetic anomalies was produced for the entire region. The map readily portrays the first-order magnetic differences between oceanic and continental regions. The magnetic anomaly pattern over the...
Authors
Alexander Golynsky, Massimo Chiappini, Detlef Damaske, Fausto Ferraccioli, Carol A. Finn, Takemi Ishihara, Hyung Rae Kim, Luis Kovacs, Valery Masolov, Peter Morris, Ralph R. B. von Frese
Integration of coral reef ecosystem process studies and remote sensing Integration of coral reef ecosystem process studies and remote sensing
Worldwide, local-scale anthropogenic stress combined with global climate change is driving shifts in the state of reef benthic communities from coral-rich to micro- or macroalgal-dominated (Knowlton, 1992; Done, 1999). Such phase shifts in reef benthic communities may be either abrupt or gradual, and case studies from diverse ocean basins demonstrate that recovery, while uncertain...
Authors
John Brook, Kimberly Yates, Robert Halley
Assessing massive flank collapse at stratovolcanoes using 3-D slope stability analysis Assessing massive flank collapse at stratovolcanoes using 3-D slope stability analysis
Massive rock failures pose one of the greatest hazards at stratovolcanoes; more than 20,000 fatalities have resulted worldwide from historical volcano edifice collapses. Although numerous processes can destabilize an edifice, gravitational instability is strongly influenced by the interplay of topography, variable potential failure surfaces, and the three-dimensional (3-D) distributions...
Authors
Mark E. Reid, Dianne Brien
Remnant damage from the 1906 San Francisco earthquake Remnant damage from the 1906 San Francisco earthquake
This field trip consists of two stops at locations where it is possible to see damage from the 1906 earthquake and to gauge the intensity of the ground shaking that caused the damage. The first stop is at a cemetery in Colma, where the damage to monuments and headstones was photographed and roughly quantified in the Report of the State Earthquake Investigation Commission, Lawson (1908)...
Authors
John Boatwright
Heat as a ground water tracer at the Russian River RBF facility, Sonoma County, California Heat as a ground water tracer at the Russian River RBF facility, Sonoma County, California
Temperature is routinely collected as a water quality parameter, but only recently utilized as an environmental tracer of stream exchanges with ground water (Stonestrom and Constantz, 2003). In this paper, water levels and seasonal temperatures were used to estimate streambed hydraulic conductivities and water fluxes. Temperatures and water levels were analyzed from 3 observation wells...
Authors
Jim Constantz, Grace W. Su, Christine Hatch
Grizzly bear management in Yellowstone National Park: The heart of recovery in the Yellowstone Ecosystem Grizzly bear management in Yellowstone National Park: The heart of recovery in the Yellowstone Ecosystem
Grizzly bear (Ursus arctos) management in the Greater Yellowstone Ecosystem (GYE) in the past quarter century has resulted in more than doubling of the population from around 200 to more than 500, expansion of range back into habitats where the bear has extirpated more than a century ago, and a move toward removal from the U.S. Endangered Species list. At the center of this success story...
Authors
C.C. Schwartz, K. Gunther
Sampling and analytical methods Sampling and analytical methods
No abstract available.
Authors
Eurybiades Busenberg, L.N. Plummer, Peter G. Cook, D. K. Solomon, L. F Han, H. Oster
Potential use of other atmospheric gases Potential use of other atmospheric gases
No abstract available.
Authors
Eurybiades Busenberg, L.N. Plummer
Geomorphological, depositional, and foraminiferal indicators of late Quaternary tectonic uplift in Iskenderun Bay, Turkey Geomorphological, depositional, and foraminiferal indicators of late Quaternary tectonic uplift in Iskenderun Bay, Turkey
Iskenderun Bay is a major shallow embayment in the eastern part of the Mediterranean Sea, where the African and Anatolian Plates converge. This tectonically active basin was investigated for oceanographic, sedimentological, geochemical, and foraminiferal parameters. On the basis of the data acquired, the distribution of living and fossil foraminifera in 284 grab and 54 gravity core...
Authors
Valentina Yanko-Hombach, H. Koral, Niyazi Avsar, Irena Motnenko, Mary McGann
A field guide to the central, creeping section of the San Andreas fault and the San Andreas Fault Observatory at Depth A field guide to the central, creeping section of the San Andreas fault and the San Andreas Fault Observatory at Depth
This field trip is along the central section of the San Andreas fault and consists of eight stops that illustrate surface evidence of faulting, in general, and features associated with active fault creep, in particular. Fault creep is slippage along a fault that occurs either in association with small-magnitude earthquakes or without any associated large-magnitude earthquakes. Another...
Authors
Michael J. Rymer, Stephen H. Hickman, Philip W. Stoffer