Latest news & updates for Long Valley Caldera volcano
Long Valley volcano (California) activity update: small earthquake swarms
Friday Aug 24, 2012 12:05 PM | DOOR: T
Small earthquake swarm at Long Valley on 24 Aug 2012A small earthquake swarm has developed at the southern margin of the caldera, just north of Convict Lakes. The largest was a 2.5 event at 10 km depth.
Continuous GPS data over the last several months have shown a modest inflation within the caldera, with ground motion directed upward and away from the caldera's center, with a maximum uplift rate between 2 and 3 cm/yr.
Horizontal deformation is similar in magnitude, with a N/S extension rate across the caldera's center of about 3 cm/yr. These rates of deformation are comparable to those observed in 2002-2003, and well below the rates seen in the late 1990s.
(Source: USGS Aug 2012 update for Long Valley)
Tuesday, Aug 14, 2012
A small swarm of earthquakes could be during 12-13 Aug. About 30 (very small mostly [meer...]