The evaluation of the likelihood of adverse effects due to a given factor such as energy development or recurring hazardous events such as earthquakes.
Information on world earthquake activity with links to facts and lists on large earthquakes, earthquake e-mail notification, hazards and preparedness, educational links, news and highlights and other seismic information.
National Landslide Information Center links to general information, teacher/student information, recent landslide events, state and local information, current projects, fire-related landslides, and images and publications on landslides.
An automated system for rapidly estimating the shaking distribution, number of people and settlements exposed to severe shaking, and range of possible fatalities and economic losses. A color-coded alert suggests levels of appropriate response.
Description of research underway in the Pacific Northwest including geologic mapping and urban hazards studies with links to geologic maps, publications, and data.
Video: Learn what USGS scientists have discovered about landslide dynamics and which slopes are most susceptible to sliding. Hear the devastating stories of Bay Area residents affected by landslides and learn to recognize the danger signs.
Study of the susceptibility and vulnerability of basin-fill aquifers in the region to ground-water contamination by synthesizing the information on ground-water quality conditions in 15 basins from previous studies.
Online booklet on the San Andreas fault system on the California coastal region with discussion of faults, relationship of faults and earthquakes, magnitude of earthquakes, and earthquake probability.
Basic information for homeowners, communities, emergency managers, and decisionmakers. Includes sections on landslide types, evaluation tools, and mitigation techniques.
History of the Hawaiian Volcano Observatory (HVO), established in 1912, including an overview of Hawaiian volcanic processes and USGS monitoring techniques.