The 1989 earthquake swarm beneath Mammoth Mountain, California: An initial look at the 4 May through 30 September activity

Abstract Mammoth Mountain is a 50,000- to 200,000-year-old cumulovolcano standing on the southwestern rim of Long Valley in eastern California. On 4 May 1989, two M = 1 earthquakes beneath the south flank of the mountain marked the onset of a swarm that has continued for more than 6 months. In addit... View More