Seismicity Patterns Prior to the 2011 El Hierro Eruption

Brief Report| December 31, 2013 Seismicity Patterns Prior to the 2011 El Hierro Eruption I. Domínguez Cerdeña; I. Domínguez Cerdeña aCentro Geofísico de Canarias, Instituto Geográfico Nacional (IGN), c/La Marina 20, 2°, 38001 S/C de Tenerife, Spainifdominguez@fomento.es Search for other works by this author on: GSW Google Scholar C. del Fresno; C. del Fresno bObservatorio Geofísico Central, Instituto Geográfico Nacional (IGN), c/Alfonso XII, 3, 28014 Madrid, Spain Search for other works by this author on: GSW Google Scholar A. Gomis Moreno A. Gomis Moreno bObservatorio Geofísico Central, Instituto Geográfico Nacional (IGN), c/Alfonso XII, 3, 28014 Madrid, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information I. Domínguez Cerdeña aCentro Geofísico de Canarias, Instituto Geográfico Nacional (IGN), c/La Marina 20, 2°, 38001 S/C de Tenerife, Spainifdominguez@fomento.es C. del Fresno bObservatorio Geofísico Central, Instituto Geográfico Nacional (IGN), c/Alfonso XII, 3, 28014 Madrid, Spain A. Gomis Moreno bObservatorio Geofísico Central, Instituto Geográfico Nacional (IGN), c/Alfonso XII, 3, 28014 Madrid, Spain Publisher: Seismological Society of America First Online: 14 Jul 2017 Online ISSN: 1943-3573 Print ISSN: 0037-1106 Bulletin of the Seismological Society of America (2014) 104 (1): 567–575. https://doi.org/10.1785/0120130200 Article history First Online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation I. Domínguez Cerdeña, C. del Fresno, A. Gomis Moreno; Seismicity Patterns Prior to the 2011 El Hierro Eruption. Bulletin of the Seismological Society of America 2013;; 104 (1): 567–575. doi: https://doi.org/10.1785/0120130200 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract The first fully monitored volcanic eruption in the Canary Islands started on 10 October 2011, 2 km south of the island of El Hierro. This submarine eruption was preceded by various precursory signals, the most evident of which were the seismic series that started in July 2011 consisting of almost 10,000 low‐magnitude earthquakes located by manual picking. This seismicity revealed a 20 km horizontal migration from the north of the island to the south at depths of between 10 and 17 km, the deeper events occurring further south. We applied a relative location algorithm (hypoDD) to improve hypocentral locations. The resulting distribution is more compact, slightly shallower, and reveals a clearer difference in depths from north to south. Tests performed to check the reliability of the results gave maximum uncertainties of 400 m in the relocations. Furthermore, new features were found, including the origin of the seismicity in the center of the island and the presence of two alternating seismogenic zones in the north of the island during the first month of activity.Online Material: Figures of waveforms from cross correlation, data statistics, stereogram of ray parameters, ray‐tracing tests, and table of hypoDD relocations. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.