Seismologists are re-evaluating the earthquake potential of the Central Coast, a very complex tectonic region located west of the San Andreas Fault, between Monterey Bay and the Western Transverse Ranges. This area of increasing population growth ranks as one of the top 40 U.S. metropolitan areas with significant earthquake risk.
Speakers from the US Geological Survey, PG&E and academia have compared fresh data to illuminate the complexity of faulting in the central California coastal region.
Three talks will use separate datasets to focus on the California Central Ranges, Hosgri Fault Zone and nearby faults:
Constraints on 3-dimensional structure from gravity and magnetic data: V. E. Langenheim, US Geological Survey, will present analysis based on a new physical dataset that is sensitive to magnetic properties of rock, mapping fault boundaries. Her research suggests complex, non-linear features with intersecting faults. Fault and basin geometry will be important for estimating shaking potential of scenario earthquakes.
The presentation "California's Central Coast Earthquake Hazards: New information about recently identified faults," is presented in the session entitled California's Central Coast Hazards on April 9, 2009.
Materials provided by Seismological Society of America. Note: Content may be edited for style and length.
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