餘震英文aftershock)係指一場地震過後喺震央附近發生嘅規模細啲嘅地震。起因通常係初次地震搞到一個地點嘅地殼移位[1]

  1. Omori, F. (1894). "On the aftershocks of earthquakes". Journal of the College of Science, Imperial University of Tokyo. 7: 111-200.