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Sign in to saveIn seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according to a consistent pattern. In some earthquakes the main rupture happens in two or more steps, resulting in multiple main shocks. These are known as doublet earthquakes, and in general can be distinguished from aftershocks in having similar magnitudes and
Wikidata facts
- Instance of
- type of earthquake
- Subclass of
- earthquake
- Follows
- mainshock
- Image
- Sichuan 2008 Aftershocks.jpg
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- opposite of
- foreshock
Sources (3)
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