USGS Energy and Broadband Solution

BONIN ISLANDS, JAPAN REGION
10/12/21 17:19:41 UTC
Epicenter: 26.87N 143.74E

  Me   7.9                                                             
Broadband Source Parameters:
 BROADBAND DEPTH:        14.0 km
 RADIATED ENERGY                                                      
  No. of sta: 20  Focal mech.  W                                      
  Energy       1.6+0.3*10**16 Nm                                      
 COMMENT:  Complex earthquake   
  observed on broadband         
  displacement seismograms.  A  
  small event is followed by a  
  larger event about 3 seconds  
  later.  Depth from synthetics 
  of broadband displacement     
  seismograms based on larger   
  event.

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