1 The Richter scale is a measurement of seismic disturbances.
2 Seismology is the study of earthquakes and seismic waves that move through and around the earth.
3 A fully fledged ocean-crossing cable helps them detect all sorts of seismic rumbles; that would be a boon to geologists who focus on the Eurasian and African tectonic plates.
4 The seismic waves from a nearby earthquake will deform the cable minutely, leaving the returning light slightly out of phase with the light emitted by the laser.
5 The fishermen said the company's seismic survey was frightening away fish.
6 Earthquakes produce two types of seismic waves.