M4.2 earthquake near Dublin, CA

Information from UCB & USGS Menlo Park
Date & Time (Local):	2003/02/02 10:22:58 (PST)
Date & Time (UTC):	2003/02/02 18:22:58 (UTC)
Location:	4 km (3 miles) N of Dublin, CA 37.7400 -121.9370
Depth (km):	16.5
M_L:	4.2

This event is largest in a sequence (thus far) which appears to be occurring along Calaveras fault. The sequence includes an M3.6 at 8:22, M3.0 at 08:45, M4.2 at 10:22, M4.0 at 10:47, and M3.5 at 11:02. This swarm is not far from a swarm that occurred near San Ramon in November 2002 on an adjacent fault. Happy Groundhog Day!

For more information, please see the report from the CISN Northern California Management Center.

Details
- Earthquake Report from USGS & UCB
- UCB Moment Tensor solution
Maps
- Recenteqs quad for these events [with topography] [without topography]
- Map showing the location of this sequence and the 11/2002 San Ramon swarm
Seismograms
- Seismogram from a BDSN station located in Livermore - WENL via "Make your own seismogram"
- Seismograms of the M4.2 at 10:22 local time
  - Station WENL
  - Station FARB
- Seismograms of the M4.0 at 10:47 local time
  - Station WENL
  - Station FARB
Ground shaking information
- ShakeMaps (2/02 M3.6 | 2/02 M4.2 | 2/02 M4.0)
- Community Internet Intensity Maps (2/02 M2.9 | 2/02 M3.6 | 2/02 M3.0 | 2/02 M4.2 | 2/02 M4.0 | 2/02 M3.5)
Earthquake Scenarios
- ABAG earthquake scenario maps
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