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Construction of an oceanic island: Insights from the El Hierro (Canary Islands) 2011-2012 submarine volcanic eruption

2013; Geological Society of America; Volume: 41; Issue: 3 Linguagem: Inglês

10.1130/g33863.1

1943-2682

J. Rivera, Galderic Lastras, Miquel Canals, J. Acosta, Beatriz Arrese, N. Hermida-Jiménez, Aaron Micallef, Olvido Tello, David Amblàs,

earthquake and tectonic studies

Research Article| March 01, 2013 Construction of an oceanic island: Insights from the El Hierro (Canary Islands) 2011–2012 submarine volcanic eruption J. Rivera; J. Rivera 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain Search for other works by this author on: GSW Google Scholar G. Lastras; G. Lastras 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain Search for other works by this author on: GSW Google Scholar M. Canals; M. Canals * 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain *E-mail: miquelcanals@ub.edu. Search for other works by this author on: GSW Google Scholar J. Acosta; J. Acosta 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain Search for other works by this author on: GSW Google Scholar B. Arrese; B. Arrese 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain Search for other works by this author on: GSW Google Scholar N. Hermida; N. Hermida 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain Search for other works by this author on: GSW Google Scholar A. Micallef; A. Micallef 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain Search for other works by this author on: GSW Google Scholar O. Tello; O. Tello 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain Search for other works by this author on: GSW Google Scholar D. Amblas D. Amblas 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information J. Rivera 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain G. Lastras 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain M. Canals * 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain J. Acosta 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain B. Arrese 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain N. Hermida 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain A. Micallef 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain O. Tello 1Instituto Español de Oceanografía, Corazón de María 8, Madrid E-28002, Spain D. Amblas 2GRC Geociències Marines, Universitat de Barcelona, Barcelona E-08028, Spain *E-mail: miquelcanals@ub.edu. Publisher: Geological Society of America Received: 18 Jul 2012 Revision Received: 01 Oct 2012 Accepted: 01 Oct 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (3): 355–358. https://doi.org/10.1130/G33863.1 Article history Received: 18 Jul 2012 Revision Received: 01 Oct 2012 Accepted: 01 Oct 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation J. Rivera, G. Lastras, M. Canals, J. Acosta, B. Arrese, N. Hermida, A. Micallef, O. Tello, D. Amblas; Construction of an oceanic island: Insights from the El Hierro (Canary Islands) 2011–2012 submarine volcanic eruption. Geology 2013;; 41 (3): 355–358. doi: https://doi.org/10.1130/G33863.1 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 SocietyGeology Search Advanced Search Abstract Eight consecutive swath bathymetry data sets were obtained to monitor the submarine eruption that occurred from 10 October 2011 to 5 March 2012 south of El Hierro Island in the Canary Islands. An increase in seismic activity since July 2011 preceded the onset of the eruption, which was marked by seismic tremor and stained waters. The first bathymetry, 15 d after the eruption started, depicts a cone topping at 205 m depth, growing on a preexisting valley. Recurrent mapping shows changes in the morphology and depth of the cone, allowing us to identify collapses and calculate eruptive volumes and rates, which peaked at 12.7 × 106 m3 d−1 of non–dense rock equivalent (NDRE) on 29–30 October. The final cone consists of at least four vents along a north-northwest–south-southeast lineation, with the shallowest summit at 89 m depth. The total accumulated volume was 329 × 106 NDRE m3, of which one-third formed the cone. Similar cones have been identified on the submerged flanks of the island, with volumes ranging from 1000 × 106 NDRE m3. As in many other volcanic islands, large-scale landslides play an important role in the evolution of El Hierro. A giant flank landslide (El Golfo, 13–134 ka, 150–180 km3) mobilized, in a single event, a volume equivalent to 450–550 eruptions of the size of the reported one, showing striking differences in the construction and destruction rates of the island. This study is relevant for future monitoring programs and geohazard assessment of new submarine eruptions. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.