TY  - JOUR
ID  - epos2153
UR  - http://doi.org/10.1785/0120130107
IS  - 1
A1  - Langet, Nadege
A1  - Maggi, Alessia
A1  - Michelini, Alberto
A1  - Brenguier, Florent
Y1  - 2014///
N2  - We present an automatic earthquake detection and location technique based on migration of continuous waveform data. Data are preprocessed using a kurtosis estimator in order to enhance the first arrival information, then migrated onto a predefined search grid using precalculated P?wave travel times, and finally stacked. Local maxima in the resulting 4D space?time grid indicate the locations and origin times of seismic events. We applied our technique to earthquake swarms occurring on Piton de la Fournaise volcano, La Réunion, France. We located 5000 events from 12 different swarms that occurred between 2009 and 2011. Our automated locations are consistent with those performed using manual picks and indicate that the seismicity concentrates around sea level. Multiplet analysis of the detected events and subsequent double?difference relocation produce sharper images of the earthquake swarms. Our code, Waveloc, is released in open source.
JF  - Bulletin of the Seismological Society of America
VL  - 104
SN  - 0037-1106
TI  - Continuous Kurtosis-Based Migration for Seismic Event Detection and Location, with Application to Piton de la Fournaise Volcano, La Reunion
SP  - 229
AV  - none
EP  - 246
ER  -