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Earthquake Hazards Program
USGS Energy and Broadband Solution

EASTERN SICHUAN, CHINA

08/05/12 06:28:00 UTC
Epicenter 31.08N 103.27E

  Me   7.9
Broadband Source Parameters:
 BROADBAND DEPTH:        19.0 km
 RADIATED ENERGY
  No. of sta:  5  Focal mech.  C
  Energy       1.4+0.2*10**16 Nm
 COMMENT:  Complex earthquake
  observed on broadband
  displacement seismograms.  A
  small event is followed by a
  larger one about 17 seconds
  later.  Depth based on larger
  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


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