Seismology and Rebound Theory
seism: shaking or earthquake
from the greek “seismos”
ology: study
seismology: the study of earthquakes
hypocenter: point on the fault where the motion starts
epicenter: directly above the hypocenter on the surface
fault scarp: exposure of the fault visible on the surface, exposed due to offsets (movement) along the fault
explains how energy builds up and then is released in an earthquake, and how that energy is released
fault between 2 blocks is locked
a pre-existing fault is held stationary (locked) due to friction
pressure builds up
if the two blocs are under stress (any type), pressure builds up
movement occurs
when stress is high enough, friction is overcome and movement occurs where stored energy is released (seismic waves-shaking) and an earthquake occurs
blocks move
the two blocks have moved relative to one another and each block returns to its undeformed shape
faults store energy slowly
over decades to centuries to millenia
release energy rapidly in an earthquake
10s of seconds or less
seism: shaking or earthquake
from the greek “seismos”
ology: study
seismology: the study of earthquakes
hypocenter: point on the fault where the motion starts
epicenter: directly above the hypocenter on the surface
fault scarp: exposure of the fault visible on the surface, exposed due to offsets (movement) along the fault
explains how energy builds up and then is released in an earthquake, and how that energy is released
fault between 2 blocks is locked
a pre-existing fault is held stationary (locked) due to friction
pressure builds up
if the two blocs are under stress (any type), pressure builds up
movement occurs
when stress is high enough, friction is overcome and movement occurs where stored energy is released (seismic waves-shaking) and an earthquake occurs
blocks move
the two blocks have moved relative to one another and each block returns to its undeformed shape
faults store energy slowly
over decades to centuries to millenia
release energy rapidly in an earthquake
10s of seconds or less