Historic Earthquakes: Energy and Broadband Solution

Magnitude 6.6 UNIMAK ISLAND REGION, ALASKA
2003 February 19 03:32:36 UTC

BROADBAND SOURCE PARAMETERS
 Energy Magnitude:
  Me                         6.4
 Radiated Energy:
  Es               8.3*10**13 Nm
  No. of sta: 20  Focal mech.  F
 Broadband Depth:        19.0 km
 Broadband Fault Plane Solution:
 NP1:Strike= 45 Dip=70 Slip=  90
 NP2:       225     20        90
 Principal Axes:
  T              Plg=65  Azm=315
  P                  25      135
 COMMENT:  Depth from synthetics
  of broadband displacement seismograms.