Seismologist's concern (7)

I believe the answer is:

tsunami

(Other definitions for tsunami that I've seen before include "Destructive tidal wave" , "wall of water" , "Seismic sea wave" , "Large ocean wave" , "Huge wave caused by earth tremor" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.