Branch of geology studying the physical characteristics and phenomena of the earth and its atmosphere.
Western Region geophysical investigations by the Geophysical Unit of Menlo Park, Calif. (GUMP) [ More info] Overview of the research group Geophysical Unit of Menlo Park (GUMP) with links to studies, models, and maps on gravity and geomagnetism in Nevada, California, Oregon, Washington and the U.S.
Earthquake "Top 10" Lists & Maps [ More info] 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 [ More info] 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.
Liquefaction maps and data for the San Francisco Bay area [ More info] Explains liquefaction, where it occurs, how it affects people, and what can be done about it. Includes maps and data.
New England states aeromagnetic and gravity maps and data [ More info] Aeromagnetic surveys of New England, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
United States National Seismic Hazard Maps [ More info] Maps indicating areas where earthquakes may cause damage or disrupt human activities, with information about how those maps are compiled.
Washington aeromagnetic maps and data [ More info] Colored geomagnetic and gravity maps and related data and graphical plots for the state of Washington.
A Magnitude 7.1 Earthquake in the Tacoma Fault Zone-A Plausible Scenario for the Southern Puget Sound Region, Washington [ More info] Scientific description of the likely effects of a significant earthquake on this densely populated area.
A Method for Qualitative Mapping of Thick Oil Spills Using Imaging Spectroscopy [ More info] A method to create qualitative images of thick oil in oil spills on water using near-infrared imaging spectroscopy data. It relies on the organic absorption features of chemical bonds in aliphatic hydrocarbons. The data cannot give oil volume estimates.
A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [ More info]
Alphabetical Index of Topics
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