eprintid: 2153 rev_number: 8 eprint_status: archive userid: 6 dir: disk0/00/00/21/53 datestamp: 2018-12-20 11:38:52 lastmod: 2018-12-20 11:38:52 status_changed: 2018-12-20 11:38:52 type: article metadata_visibility: show creators_name: Langet, Nadege creators_name: Maggi, Alessia creators_name: Michelini, Alberto creators_name: Brenguier, Florent corp_creators: Institut de Physique du Globe de Strasbourg, CNRS et Université de Strasbourg (EOST), corp_creators: Institut de Physique du Globe de Strasbourg, CNRS et Université de Strasbourg (EOST), corp_creators: Instituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, corp_creators: Institut des Sciences de la Terre, CNRS et Université de Grenoble, title: Continuous Kurtosis-Based Migration for Seismic Event Detection and Location, with Application to Piton de la Fournaise Volcano, La Reunion subjects: MP1 divisions: EPOS-IP full_text_status: none abstract: 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. date: 2014 date_type: published publication: Bulletin of the Seismological Society of America volume: 104 number: 1 pagerange: 229-246 id_number: doi:10.1785/0120130107 issn: 0037-1106 official_url: http://doi.org/10.1785/0120130107 access_IS-EPOS: limited software_references: Waveform-based_seismic_event_location owner: Publisher citation: Langet, Nadege and Maggi, Alessia and Michelini, Alberto and Brenguier, Florent (2014) Continuous Kurtosis-Based Migration for Seismic Event Detection and Location, with Application to Piton de la Fournaise Volcano, La Reunion. Bulletin of the Seismological Society of America, 104 (1). pp. 229-246. DOI: https://doi.org/10.1785/0120130107