Swarm of earthquakes shakes Mammoth
By Veronica Rocha, Los Angeles Times
The more than 600 earthquakes that have struck the Mammoth Lakes region over the last 24 hours are an indication of tectonic, not volcanic, stress, an expert said Friday.
At least 109 of the earthquakes were magnitude 2.0 or greater, with smaller quakes making up the bulk of the activity, said David Shelly, a seismologist at the U.S. Geological Survey’s Volcano Science Center. At least six, however, were greater than magnitude 3.0.
The largest, a 3.8 temblor six miles from Mammoth Lakes, occurred at 9:21pm Thursday.
