processed quarterly map
(click to enlarge)
NE Pacific Seismicity:
location maps for the NE Pacific have been accumulated since
August 29, 1991. The source location fixes are based on bearing
and arrival time information at 3 to 11 SOSUS hydrophone sites.
Source levels are estimated from received amplitudes and a
simple transmission loss model.
Juan de Fuca, July 2007
Ridge, NE Pacific, March 2005
Ridge, NE Pacific, February 2005 Endeavour Ridge, October 2004
Cobb Offset, May 2004
West Valley, July 2003
locations for the NE Pacific are currently being processed
from archived data and made available as each quarter is completed.
The data is monitored in real-time for any current seismic