Historic Earthquakes

Magnitude 7.3 SANTA CRUZ ISLANDS
1999 February 06 21:47:59 UTC

 Me   7.0                                                             
 Broadband Source Parameters:
 BROADBAND DEPTH:        73.0 km
 BROADBAND FAULT PLANE SOLUTION: 
 NP1:Strike=185 Dip=60 Slip= 125
 NP2:       311     45        45
 Principal Axes:
 T   Plg=59  Azm=146
 P        9      251
RADIATED ENERGY                                                      
No. of sta:  7  Focal mech.  F                                      
Energy       7.4+1.0*10**14 Nm                                      
COMMENT: Complex earthquake: a small event is followed by a
larger one about 2 seconds later. Depth from synthetics 
of broadband displacement seismograms based on second event.