Wiktionary
microquake
n. microearthquake
Usage examples of "microquake".
Something about the microquakes reminded her of the street rumbling as a subway train passed beneath her feet.
At first she had thought—or at least had hoped—that the microquakes were just the asteroid reaching a new equilibrium, a normal reaction to a most abnormal source of acceleration.
In all probability, the digital cognizance given off by a tiny info unit would be masked by the geysers and microquakes forever popping under the Rimmers.