M1.4 Quarry Blast - 11km E of Quarry near Portola Valley, CA (BETA) 2014-02-21 20:52:38 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 1.4 Md ± 0.40
Location 37.327°N, 122.100°W ± 0.4 km
Depth 0.0 km ± 31.6 km
Number of Stations Used Not Specified
Number of Phases Used 14
Minimum Distance 9.0 km (0.08°)
Travel Time Residual 0.04 sec
Azimuthal Gap 90°
Review Status MANUAL
Event ID nc72172286
See the “Contributed Solutions” for a list of all contributed location parameters.

Contributed Solutions

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