EESA06H3 Chapter Notes - Chapter 3: Mercalli Intensity Scale, Seismometer, Love Wave
Document Summary
December 24, 2004, magnitude 9. 3 earthquake (second largest recorded since 1900) Seismic waves; waves of energy produced by an earthquake: these casue the ground to tremble and shake during an earthquake. Elastic rebound theory: sudden release of progressively stored elastic strain energy in rocks, causing movement along a fault. Most earthquakes are associated with movements on faults, but in some quakes the connection with faulting may be difficult to establish. Earthquakes also occur during explosive volcanic eruptions as magma forcibly fills underground magma chambers prior to many eruptions; these quakes may not be associated with fault movements at all. Deep earthquakes: (100-670km below surface) all found on cold, subducting plates sliding into the mantle. Magnitude 9. 3 earthquake was caused by the sudden released of large amounts of energy along a portion of the boundary between the india plate and the subducting burma plate.
