How long after an earthquake is the phenomenon of additional quakes considered an aftershock?

Answer 1

Aftershocks are smaller earthquakes that occur after a larger event (the mainshock) in the same area. If an even larger earthquake occurs, then the original mainshock becomes a foreshock and the bigger event becomes the mainshock.

Answer 2

An earthquake is a sudden release of tension in the Earth's crust forcing the two plates to move apart dramatically.

An aftershock is another set of smaller earthqaukes as a resultant from the earthquake itself.

Answer 3

There is no set time period for additional quakes to be described as aftershocks.

However to count as aftershocks they must be related to the stress redistribution and release of the original fault movement that caused the main earthquake shock.

Answer 4

An aftershock is a small earthquake which follows in the vicinity of another, larger earthquake, sometimes known as the mainshock.

By extension, it can refer to any result or consequence following a major event.

Answer 5

An after shock is a smaller earthquake that comes after the previous larger earthquake.

Answer 6

An aftershock is a smaller earthquake that occurs as a result of a larger earthquake (the mainshock) in the same area.

Answer 7

Faults rub next to eachother and earthquakes shake

Answer 8

Yes, there is always an aftershock.