• Latest Earthquakes
• - USA
• - World
• - EQ Notification Service
• - Feeds & Data
• - Animations
• Recent Earthquakes
• Historic Earthquakes
• - "Top 10" Lists & Maps
• - Significant EQs
• - Earthquake Search
• - EQ Summary Posters
• - Scientific Data
• About EQ Maps
• Did You Feel It?
• Energy & Broadband Solutions
• Fast Moment Tensors
• Media Info
• PAGER
• Seismogram Displays
• ShakeMaps

Near Coast of Ecuador

98/08/04 18:59:20 UTC
Epicenter 0.59S 80.39W

  Me   7.0
Broadband Source Parameters:
 BROADBAND DEPTH:        19.0 km
 BROADBAND FAULT PLANE SOLUTION:
 NP1:Strike= 68 Dip=35 Slip= 154
 NP2:       180     75        58
 Principal Axes:
  T              Plg=49  Azm= 55
  P                  24      294
 RADIATED ENERGY                                                      
  No. of sta: 17  Focal mech.  M
  Energy       7.1+1.2*10**14 Nm
COMMENT:  Complex earthquake observed on broadband
displacement seismograms. A small event is followed by a
larger one about 3 seconds later. Depth from synthetics 
of broadband displacement seismograms based on larger event.

Explanation of Parameters
Latest USGS Energy Solutions
Source Parameter Search

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