ENVS 3000 Lecture Notes - Lecture 8: Earthquake Engineering, Seismic Hazard, Seismic Moment
Document Summary
Directivity with respect to earthquake hazards, refers to the fact that during some moderate to large earthquakes the rupture of the fault is in a particular direction and the intensity of seismic shaking is greater in that direction. Dilate to undergo an inelastic increase in volume. Distant tsunami travels out across the deep ocean at high speed. They can travel thousands of kilometers across the ocean to strike remote shorelines with very little loss of energy. Earthquake natural shaking or vibrating of earth in response to the breaking of rocks along faults. The earthquake zones of earth generally are correlated with lithospheric plate boundaries. Earthquake cycle a hypothesis to explain periodic occurrence of earthquakes based on drop in elastic strain after an earthquake and reaccumulation of strain before the next event. Earthquake segment defined as those parts of a fault zone that has ruptured as a unit during historic and prehistoric earthquakes.
