Locating micro-events in Long Beach, CA urban environment with a dense array

Asaf Inbal, Franklin Koch, Robert W. Clayton, Jean Paul Ampuero

Research output: Contribution to journalConference articlepeer-review


Micro-earthquake activity is reported for the first 6 months of 2011 in Long Beach, CA using a density urban exploration seismic network. Detected events include at least four times as many man-made events as possible real earthquakes indicated by repeated locations, and distinct patterns in the hour-of-day and day-of-week origin times. Some discrimination appears possible utilized the earthquake spectral behavior in the wavelet transform domain. The back-projection of the seismic data onto a prescribed fault plane of the Newport-Inglewood fault produces interesting slip patterns over a time window spanning a small earthquake.

Original languageEnglish
Pages (from-to)2129-2134
Number of pages6
JournalSEG Technical Program Expanded Abstracts
StatePublished - 2013
Externally publishedYes
EventSEG Houston 2013 Annual Meeting, SEG 2013 - Houston, United States
Duration: 22 Sep 201127 Sep 2011


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