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Unformatted text preview: the fault that slips
the Tsunamis, or seismic sea waves
Tsunamis Incorrectly called “tidal waves” Result from “push” of underwater fault
or undersea landslide
or In open ocean wave height is < 1 meter In shallow coast water wave can be > 30
meters Very destructive Formation of a tsunami
Formation of a tsunami Honolulu officials know exactly how long it takes a Tsunami to reach them from anywhere Tsunami 1960, Hilo Tsunami 1960, Hilo Hawaii Tsunami Model, Japan Earthquake
Tsunami Model, Japan Earthquake Tsunami Tsunami Model, Alaska Quake Earthquake prediction
Earthquake prediction Long-range forecasts
Long-range Calculates probability of a certain
magnitude earthquake occurring over a
given time period
given Short-range predictions Ongoing research, presently not much
success Long Term Predictions
Seismic Gaps Long Term Predictions Strain Energy accumulates uniformly release irregularly Some locked by friction “Seismic gaps”
– Prime candidates for major earthquake Some release energy continuously creep
– No major earthquakes there Seismic Gaps at the Aleutian Islands...
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This document was uploaded on 01/26/2014.
- Winter '14