Regional Location:
Preliminary Magnitude:
Moment Magnitude:
Greenwich Mean Date:
Greenwich Mean Time:
Latitude:
Longitude:
Focal Depth (km):
Analysis Quality (A-D):Parkfield, Central California
4.1 Ml (NCSN)
4.1 Mw (UCBSL)
99/03/23
18:36:40
36.68N
121.30W
6.3 km
A
- Subtract 8 hours from Greenwich Mean Time to obtain PST or 5 hours for EDT
- Location Quality: A (good), B (fair), C (poor), D (bad)
- Magnitude: Ml (local or Richter magnitude), Lg (mblg), Md (duration), Mb (body wave), Ms (surface wave), Mw (moment)
- Standard Sources Include:
- U.S. Geological Survey, National Earthquake Information Center, Golden, CO (NEIC)
- Harvard Geophysical Observatory, Harvard University, Cambridge, MA (HRV)
- U.S. Geological Survey, Northern California Seismic Network (NCSN)
- University of California, Berkeley, Seismological Laboratory (UCBSL)
- California Institute of Technology, Pasadena, California (Caltech)
- various wire reports and/or personal communications
- All data are preliminary and subject to change.
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