What happens before a big earthquake?

Q: What happens before a big earthquake?

<b>A foreshock</b> is an earthquake that occurs before a larger earthquake and is related to it in both time and space. After the full sequence of events has happened, the designation of an earthquake as foreshock, mainshock or aftershock can be made.

Question

A foreshock is an earthquake that occurs before a larger earthquake and is related to it in both time and space. After the full sequence of events has happened, the designation of an earthquake as foreshock, mainshock or aftershock can be made.

Hagrid P Hazard · Accepted Answer

A foreshock is an earthquake that occurs before a larger earthquake and is related to it in both time and space. After the full sequence of events has happened, the designation of an earthquake as foreshock, mainshock or aftershock can be made.

What happens before a big earthquake?

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