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  2. Seismic hazard - Wikipedia

    en.wikipedia.org/wiki/Seismic_hazard

    Surface motion map for a hypothetical earthquake on the northern portion of the Hayward Fault Zone and its presumed northern extension, the Rodgers Creek Fault Zone. A seismic hazard is the probability that an earthquake will occur in a given geographic area, within a given window of time, and with ground motion intensity exceeding a given threshold.

  3. File:Seismic Hazard Zones in the United States..pdf - Wikipedia

    en.wikipedia.org/wiki/File:Seismic_Hazard_Zones...

    English: This map shows the seismic hazard zones in the United States. It also shows the states which are at a higher risk of receiving earthquakes. Date: 3 April 2012:

  4. Category:Seismic zones of the United States - Wikipedia

    en.wikipedia.org/wiki/Category:Seismic_zones_of...

    Seismic Hazard Zones in the United States. Subcategories. This category has only the following subcategory. S. Seismic faults of the United States (6 C, 20 P)

  5. Where in Northern California is most at risk for tsunami ...

    www.aol.com/news/where-northern-california-most...

    Here are maps showing some of Northern California’s most populated areas within a tsunami hazard zone, as determined by the California Geological Survey. The yellow section indicates the tsunami ...

  6. Isoseismal map - Wikipedia

    en.wikipedia.org/wiki/Isoseismal_map

    Isoseismal map for the 1968 Illinois earthquake. In seismology, an isoseismal map is used to show countour lines of equally felt seismic intensity, generally measured on the Modified Mercalli scale. Such maps help to identify earthquake epicenters, particularly where no instrumental records exist, such as for historical earthquakes.

  7. Researchers gain clearest picture yet of fault that threatens ...

    www.aol.com/news/big-one-researchers-gain...

    To map the subduction zone, researchers at sea performed active source seismic imaging, a technique that sends sound to the ocean floor and then processes the echoes that return. The method is ...

  8. Alquist Priolo Special Studies Zone Act - Wikipedia

    en.wikipedia.org/wiki/Alquist_Priolo_Special...

    The Seismic Hazards Mapping Act, passed in 1990, addresses non-surface fault rupture earthquake hazards, including liquefaction and seismically induced landslides. The act only applies to faults which are "sufficiently active" and "well defined"- for example the 1994 Northridge earthquake occurred on a blind thrust fault not zoned by the act ...

  9. California Geological Survey - Wikipedia

    en.wikipedia.org/wiki/California_Geological_Survey

    Enacting the Seismic Hazards Mapping Act, establishing a program to identify and map seismic hazard zones. Language was also added which outlined DMG's responsibilities as encompassing: Hazard assessment – identification and mapping of geologic hazards and estimates of potential consequences and likelihood of occurrence.