Historic Earthquakes: Energy and Broadband Solution

Magnitude 6.9 RAT ISLANDS, ALEUTIAN ISLANDS, ALASKA
2003 June 23 12:12:36 UTC

BROADBAND SOURCE PARAMETERS
 Energy Magnitude:
  Me                         6.8
 Radiated Energy:
  Es               3.4*10**14 Nm
  No. of sta: 21  Focal mech.  F
 Broadband Depth:        20.0 km
 Broadband Fault Plane Solution:
 NP1:Strike= 70 Dip=80 Slip=  80
 NP2:       295     14       135
 Principal Axes:
  T              Plg=54  Azm=328
  P                  34      169
 COMMENT:  Two events about 2 seconds apart. Depth from synthetics of broadband       
  displacement seismograms based on larger second event.