M2.1 - 9km NNE of East Foothills, California (BETA) 2013-04-20 01:34:01 UTC

Summary

Location and Magnitude contributed by: Northern California Seismic System, UC Berkeley and USGS Menlo Park

General

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Scientific

Location and Magnitude contributed by: Northern California Seismic System, UC Berkeley and USGS Menlo Park

Summary

Preferred Location Parameters

Parameter Value Uncertainty
Magnitude 2.1 Md ± 0.20
Location 37.455°N, 121.773°W ± 0.1 km
Depth 7.4 km ± 0.4 km
Number of Stations Used Not Specified
Number of Phases Used 96
Minimum Distance 9.0 km (0.08°)
Travel Time Residual 0.1 sec
Azimuthal Gap 61°
Review Status MANUAL
Event ID nc71974045
See the “Contributed Solutions” for a list of all contributed location parameters.

Focal Mechanism

Focal Mechanism EQXML

Contributed Solutions

Focal Mechanism

P-Wave Travel Times

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