On the relation between ground surface deformation and seismicity during the 2012–2014 successive magmatic intrusions at El Hierro Island

Cerdeña, I. Domínguez; García-Cañada, Laura; Benito-Saz, María Á.; Fresno, Carmen del; Lamolda, Héctor; Pablo, Jorge Pereda de; Sanz, Carlos

doi:10.1016/j.tecto.2018.07.019

Cited by 17 publications

(20 citation statements)

References 73 publications

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“…Magmatic processes at El Hierro remained active for the following 2 years with the occurrence of, at least, six well-detected post-eruptive magmatic intrusions (e.g., Benito-Saz et al, 2017;Díaz-Moreno et al, 2015;Domínguez Cerdeña et al, 2018;Klügel et al, 2015). These intrusions were characterized by the nearly simultaneous beginning of seismicity and ground deformation (e.g., Lamolda et al, 2017).…”

Section: El Hierro 2011-2014 Magmatic Intrusions and Eruptive Activitymentioning

confidence: 99%

“…The 2011–2012 Tagoro volcano is marked with a red triangle. (c) Epicenters and (d) depth versus longitude of relocated earthquakes recorded at El Hierro for each of the 2011–2014 intrusions (Domínguez Cerdeña et al, , ). Earthquakes are shown in a different color for each intrusion.…”

Section: El Hierro Islandmentioning

confidence: 99%

“…Nonrelocated earthquakes from the Spanish National Geographic Institute catalog ( www.ign.es) are represented in light grey. Relocated earthquakes (Domínguez Cerdeña et al, , ) are represented in the same color used in Figure .…”

Section: El Hierro 2011–2014 Magmatic Intrusions and Eruptive Activitymentioning

confidence: 99%

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Magma Flow Rates and Temporal Evolution of the 2012–2014 Post‐Eruptive Intrusions at El Hierro, Canary Islands

et al. 2019

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The 2011–2014 volcanic activity at El Hierro (Canary Islands) was characterized by a 5‐month long submarine eruption as well as a series of magmatic intrusions occurring between 5 months and 2 years after the eruption, as revealed by seismic swarms and ground deformation. We study the temporal evolution of the six post‐eruptive magmatic intrusions, using Global Navigation Satellite System and Interferometric Synthetic Aperture Radar observations complemented with relocated earthquakes. Magma volumes and magma supply rates are determined from inversion of the geodetic data using a Bayesian approach. The intrusions last between ~3 and 20 days and are inferred to be sill‐like, thin compared with their lateral extent and emplaced in the ~13–16 km depth range. Initial magma flow rates of ~300 m3/s decay exponentially with time. The two largest intrusions occurred in June–July 2012 and March–April 2013. During each of these events, magma migrated laterally, and >120 ×106 m3 of magma was intruded beneath the island. The shortest events, <1 week‐long, intruded ~(24hyphen;44) ×106 m3 of magma beneath the volcano. We suggest that all intrusions originated from an overpressure in a deep magma body located beneath the center of El Hierro. The crust/mantle boundary and the previous intrusion that fed the 2011–2012 submarine eruption may have discouraged the ascent of the post‐eruptive intrusions to the surface and forced them to migrate laterally away from the island as sill‐like sources.

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Section: El Hierro 2011-2014 Magmatic Intrusions and Eruptive Activitymentioning

confidence: 99%

Section: El Hierro Islandmentioning

confidence: 99%

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Magma Flow Rates and Temporal Evolution of the 2012–2014 Post‐Eruptive Intrusions at El Hierro, Canary Islands

et al. 2019

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“…Figura 23: Histograma de la actividad sísmica desde julio de 2011 hasta abril de 2014. Las diferentes series sísmicas se muestran con colores diferenciados (Domínguez Cerdeña et al, 2018) En el artículo Domínguez Cerdeña et al (2018) se analizan en detalle cada una de estas reactivaciones asociadas a nuevas intrusiones magmáticas, con el objetivo de determinar las reservas magmáticas que las han alimentado así como la evolución del parámetro de Gutenberg-Richter 'b'. Para obtener la localización de la fuente magmática correspondiente a cada periodo se invirtió la información de la deformación sufrida en cada reactivación.…”

Section: Periodo Post-eruptivounclassified

“…Figura 24: Evolución temporal de la sismicidad relocalizada y localización de la fuente de presión calculada para cada episodio intrusivo (Domínguez Cerdeña et al, 2018).…”

Section: Periodo Post-eruptivounclassified

¿Qué hemos aprendido de la erupción de El Hierro de 2011-2012?

Bello¹

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Submarine Eruption of El Hierro, Geotourism and Geoparks

Ramos

Ortega

Przeor

et al. 2022

Geoheritage, Geoparks and Geotourism

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The year 2011 remained in the memory of the residents of the island of El Hierro (Canary Island, Spain) because of the volcanic episode that originated in its vicinity. From the beginning of the first precursory signs in July 2011, the island’s inhabitants reminded that the islands’ geological origin is volcanic and, what are the consequent threats of living on them. The eruption, however, has occurred in the marine realm leaving the only threats to the population, strong earthquakes, and diffuse emission of volcanic gases. The Tagoro eruption has not caused any loss of human life, however, its major impact indirectly affected the economy of the residents of the village of La Restinga, in whose vicinity the volcano originated. From a scientific point of view, the eruption has provided an enormous field of observation of the volcanic phenomenon. With the information obtained during the monitoring of the volcano, there is more insight into possible future eruptions. A volcanic product that has never been seen before (Restringolites) was found thanks to this eruption, which is why this volcano was so particular from a petrological point of view. The eruption affected the island's economy, and it also had negative consequences on Herreño tourism. The inhabitants of the island, wanting to recover the pre-eruptive economic levels and attract tourists, who, due to the false catastrophic descriptions about the eruption, stopped coming, have taken decisive steps. El Hierro, having peculiar geomorphological and geological characteristics, was the perfect candidate to obtain the Geopark status. In this way, the island of El Hierro, being the Biosphere Reserve since 2000, became also the Geopark since 2014.

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On the relation between ground surface deformation and seismicity during the 2012–2014 successive magmatic intrusions at El Hierro Island

Cited by 17 publications

References 73 publications

Magma Flow Rates and Temporal Evolution of the 2012–2014 Post‐Eruptive Intrusions at El Hierro, Canary Islands

Magma Flow Rates and Temporal Evolution of the 2012–2014 Post‐Eruptive Intrusions at El Hierro, Canary Islands

¿Qué hemos aprendido de la erupción de El Hierro de 2011-2012?

Submarine Eruption of El Hierro, Geotourism and Geoparks

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