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Soil Types and Tsunamis
Transcript of Soil Types and Tsunamis
-not common in the bay area Type B: mesozoic and volcanic rock
-<245 myo, >64 myo
-the best we can find in the bay area Type C: some quaternary rock, mud, silt, sanstone, limestone, and Franciscan rock. Moderately amplifies shaking Type D: quaternary mud, sands, gravel, and silt. Considerably amplifies shaking Type E: water-saturated artificial landfill.
greatly amplifies shaking because of liquefaction
-liquefaction means that sediment is acting like liquid because of being shaken up so much As we can see, type A is the best and type E is the worst. Tsunamis What is a tsunami?
A tsunami is a tremendous, terrifying wave created by an underwater earthquake or volcanic activity What can a tsunami do?
It can swallow anything in its way, lift up houses and throw them around elsewhere. Can a tsunami happen in the bay area?
A tsunami could certainly happen in the bay area.
-It could happen if the epicenter of a bay area earthquake was in the ocean. -It could happen if there was an earthquake anywhere along the Pacific or North American Plate. Although Cupertino is almost entirely built on soil type C, it misses all the major faults and is safely guarded from tsunamis by the Coastal Range. Most recent tsunami so far:
The devestating tsunami in Japan on March 11, 2011 following a major 9.0 earthquake. the end cheese