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USGS Energy and Broadband Solution

TONGA

06/05/03 15:26:35 UTC
Epicenter 20.03S 174.23W

BROADBAND SOURCE PARAMETERS
 Energy Magnitude:
  Me                         8.3
 Radiated Energy:
  Es               6.3*10**16 Nm
  No. of sta: 12  Focal mech.  F                                      
 Broadband Depth:        55.0 km
 COMMENT:  Complex earthquake   
  observed on broadband         
  displacement seismograms, with
  at least two events occurring 
  about 7 seconds apart.  Depth 
  from syntheitcs of broadband  
  displacement seismograms      
  based on first event.

Explanation of Parameters
Latest USGS Energy Solutions
Source Parameter Search

For more information, contact George Choy, choy@usgs.gov

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver