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Geophysics
Branch of geology studying the physical characteristics and phenomena of the earth and its atmosphere.
Subtopics:
Marine geophysics (9 items)
Seismology (51 items)
Tectonophysics (3 items)
Related topics:
Results 1 - 10 of 91 listed by similarity [list alphabetically]
PDF Introduction to potential fields: Gravity [New Window]
Explanation of the Earth's gravitational field, emphasizing how USGS scientists measure gravity and portray these measurements on maps. Explains terminology of gravity anomaly maps and their relationship to the rock types and other geologic features.
Geophysical products [New Window]
Links to products of magnetic, gravity, magnetotelluric, and multi-discipline reports and surveys of regions in the U.S. and Antarctica plus geophysical software tools. Some products are in PDF format.
Borehole geophysics as applied to geohydrology [New Window]
Project summary, photos of logging truck, and bibliographies on log interpretation techniques and instrumentation to record geophysical data in wells and test holes for studying ground water hydraulics and evaluate waste disposal sites.
Groundwater geophysical technology transfer [New Window]
Site to provide USGS scientists with web-based resoures to transfer new geophysical knowledge and experience; includes methods, tools, publications and training.
USGS develops geophysical methods to improve remediation monitoring and site characterization [New Window]
Short news article describing the use of electrical resistivity tomography to improve imaging of tracer flow in ground water.
Earthquake "Top 10" Lists & Maps [New Window]
Lists of largest earthquakes in the world and in the United States, earthquake facts and statistics, deaths from earthquakes, earthquakes by magnitude, and significant earthquakes.
Earthquake hazard maps [New Window]
National seismic hazards maps, global seismic hazards map, predictive intensity maps, shaking hazards maps and probabilities for California, and a variety of fact sheets on earthquakes.
Maps of recent earthquake activity in California-Nevada [New Window]
Near-real-time maps of location, ground motion, and shaking intensity of earthquakes in California and Nevada for the past hour, past day, and past week and links to other earthquake information.
Washington aeromagnetic maps and data [New Window]
Colored geomagnetic and gravity maps and related data and graphical plots for the state of Washington.
PDF A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [New Window]
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