earthquake wave

The researchers studied earthquake wave pairs from Alaska, going all the way back to 1964.

It must have been some tremendous natural convulsions, an earthquake wave of enormous lateral dimensions, which threw up this pumice-stone, and deposited it throughout this entire region at the same height above high-water mark.

E, Epicentre. 1-4, Successive positions of earthquake wave.

It has suffered frequently from earthquakes, being in 1868 almost entirely destroyed, part of it being also submerged by an earthquake wave.

In less than two years subsequent to our visit the whole of this grand pile was little better than a heap of ruins, from an earthquake wave which passed over these islands.