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PG&E and USGS "Cooperative Research & Development between Pacific Gas & Electric Company and the USGS to promote informed decisions about reducing Earthquake Risks in the San Francisco Bay Area." Portfolio of images of landscape, seascape and faults of the San Francisco Bay area These images drape Landsat TM satellite imagery over Digital Elevation Models to show the bay as it has never been seen before. Earthquake fault lines are displayed in red. All the images can be downloaded quickly for printing from your home computer on US Letter paper. Full size 6ft images can be downloaded or ordered from this site, or you can take a file to any good copy service bureau that offers a poster printing service.
USGS Western Region Geologic Mapping Team's Project members specialize in geologic mapping, landslide hazards analysis, geophysics, terrain modeling and analysis, paleontology, and Geographic Information Systems (GIS). Through an understanding of the complex geology of the San Francisco Bay region, the Project seeks to assess geologic hazards such as landslides, earthquake-causing fault zones, and soil liquefaction due to ground shaking. Visit the USGS San Francisco Bay Region Project's Web site to learn about and navigate through these topics:
Rock Pinnacles on the Floor of SF Bay that Pose a Hazard to Navigation With spectacular imagery and perspective views of the SF Bayfloor, learn about the hazards that big ships and barges face in navigating San Francisco Bay and what might be done to help. This Web page series is based on the USGS Open-File Report (OFR) "Multibeam* Data and Socio-Economic Issues in West-Central San Francisco Bay," USGS OFR 98-139. *The high-resolution multibeam swath mapping system used here is a hull-mounted sonar array that collects bathymetric soundings with a series of beams, and records the absolute amount of sound reflected back to the array. The data products are highly-detailed bathymetric maps and backscatter images, respectively. A sample of the bathymetric data is shown to the left.
1982-83 El Niño Coastal Erosion: San Mateo County, California Heavy surf and rains severely eroded beaches and fragile sea cliffs along the coast of San Mateo County, California during the intense winter storms of 1982-83, the last El Niño climatic event. View small-scale geologic and erosion maps of the San Mateo Coast, and compare 1982-83 stable and unstable coastal zones.
1997-98 El Niño Coastal Monitoring Program USGS researchers and students from University of California at Santa Cruz have been conducting beach surveys and monitoring changes in coastal morphology since early October 1997. Up to 4 meters of vertical beach loss was measured on several Monterey Bay beaches between October and mid-February and many beaches were completely submerged during high tides. Historical structures that had been buried since 1983, such as wharf pilings, old seawalls, and trolley car trestles, became emergent on several Monterey Bay beaches.
San Francisco Bay Region Landslide Folio USGS has released a full slate of maps and interpretations useful to officials and the public for assessing potential landslide and debris-flow hazards during the current El Niño climatic conditions. These maps were created by integrating information on topography, landslides, and rainfall thresholds, together with data from the National Weather Service and the State Office of Emergency Services. The data are available for the entire region as well as by county. The San Francisco Bay Region Landslide Folio comprises six separate but related reports. These reports as well as sample maps are now available.
Potential San Francisco Bay Landslides During El Niño USGS produced special landslide hazard maps of the San Francisco Bay Area for the California State Office of Emergency Services (OES) and the National Weather Service (NWS), in anticipation of the 1997-98 El Niño Season. The landslide maps identify areas where the greatest threat to life and property exists from the movement of deep-seated landslides. Check out this new El Niño site for a full assortment of maps, animations, images, and interpretations.
Rapid Earthquake Location Service What's shaking? When you feel the ground move, or think you do, confirmation is a click away. A new rapid earthquake location service by USGS and UC Berkeley separates the quakes from the large trucks and produces a very preliminary magnitude and location of significant quakes in northern California. Preliminary data will be updated as more information becomes available and seismologists on call are able to interpret the readings. Links from here lead to lots of other new earthquake information provided by USGS.
ABAG-USGS Earthquake Hazard Maps USGS geophysist John Boatwright is the co-author of a report by the Association of Bay Area Governments called On Shaky Ground. This report and the accompanying earthquake shaking hazard maps were accessed 100,000 times in its first week (May 4-11, 1995).
USGS California Earthquake Information Here's the complete earthquake coverage for California from USGS. Lots of information on the Great 1906 San Francisco Earthquake, Loma Prieta and much more. Pictures From the 1989 Loma Prieta Earthquake USGS released a Photo CD of pictures taken after the quake. Look here for an extensive review. California Earth Science Digital Publications and Datasets Online reports and datasets on the Western Region Geologic Information Server. Landslide Hazards Detection and Warning An information sheet on the partnership between USGS and the National Weather Service to issue landslide warnings. National, California/Nevada and Central and Eastern U.S. earthquake hazard maps on the USGS's Earthquake Hazards Program's web site. Central California/San Francisco Bay Earthquake Hazards Project The USGS Western Region Coastal and Marine Geology Team's study of the structure of the Earth's crust in the San Francisco Bay area. USGS Provides Long-Term Perspective for Integrated Science See maps of the Bay Area showing urban growth, wetland change, and earthquake epicenters, 1850-1990.
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URL: http://sfbay.wr.usgs.gov/access/hazards.html Page maintainer: Laura Zink Torresan; Last modified: 11 April 2002 USGS Privacy Statement || Disclaimer || Copyright information || Accessibility |