I was at an Open House at the Lamont-Doherty Earth Observatory [0] a few weeks ago, and one of the researchers was doing something adjacent to this -- recording

I was at an Open House at the Lamont-Doherty Earth Observatory [0] a few weeks ago, and one of the researchers was doing something adjacent to this -- recording the sound of earthquakes for analysis. Will try to find who it was. [0] https://lamont.columbia.edu/ https://lamont.columbia.edu/