The 5,660 yBP Boquerón explosive eruption, Teide-Pico Viejo complex, Tenerife.
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| Title: | The 5,660 yBP Boquerón explosive eruption, Teide-Pico Viejo complex, Tenerife. |
|---|---|
| Authors: | García, Olaya1 ogperez@fomento.es, Bonadonna, Costanza2, Martí, Joan3, Pioli, Laura2 |
| Source: | Bulletin of Volcanology. Nov2012, Vol. 74 Issue 9, p2037-2050. 14p. |
| Subject Terms: | *Risk assessment, *History of volcanic eruptions, *Explosive volcanic eruptions, *Stratigraphic geology, *Geological time scales |
| Geographic Terms: | Tenerife (Canary Islands) |
| Abstract: | Quantitative hazard assessments of active volcanoes require an accurate knowledge of the past eruptive activity in terms of eruption dynamics and the stratified products of eruption. Teide-Pico Viejo (TPV) is one of the largest volcanic complexes in Europe, but the associated eruptive history has only been constrained based on very general stratigraphic and geochronological data. In particular, recent studies have shown that explosive activity has been significantly more frequently common than previously thought. Our study contributes to characterization of explosive activity of TPV by describing for the first time the subplinian eruption of El Boquerón (5,660 yBP), a satellite dome located on the northern slope of the Pico Viejo stratovolcano. Stratigraphic data suggest complex shifting from effusive phases with lava flows to highly explosive phase that generated a relatively thick and widespread pumice fallout deposit. This explosive phase is classified as a subplinian eruption of VEI 3 that lasted for about 9-15 h and produced a plume with a height of up to 9 km above sea level (i.e. 7 km above the vent; MER of 6.9-8.2 × 10 kg/s). The tephra deposit (minimum bulk volume of 4-6 × 10 m) was dispersed to the NE by up to 10 m/s winds. A similar eruption today would significantly impact the economy of Tenerife (e.g. tourism and aviation), with major consequences mainly for the communities around the Icod Valley, and to a minor extent, the Orotava Valley. This vulnerability shows that a better knowledge of the past explosive history of TPV and an accurate estimate of future potentials to generate violent eruptions is required in order to quantify and mitigate the associated volcanic risk. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 99371662 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The 5,660 yBP Boquerón explosive eruption, Teide-Pico Viejo complex, Tenerife. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22García%2C+Olaya%22">García, Olaya</searchLink><relatesTo>1</relatesTo><i> ogperez@fomento.es</i><br /><searchLink fieldCode="AR" term="%22Bonadonna%2C+Costanza%22">Bonadonna, Costanza</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Martí%2C+Joan%22">Martí, Joan</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Pioli%2C+Laura%22">Pioli, Laura</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Volcanology%22">Bulletin of Volcanology</searchLink>. Nov2012, Vol. 74 Issue 9, p2037-2050. 14p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Risk+assessment%22">Risk assessment</searchLink><br />*<searchLink fieldCode="DE" term="%22History+of+volcanic+eruptions%22">History of volcanic eruptions</searchLink><br />*<searchLink fieldCode="DE" term="%22Explosive+volcanic+eruptions%22">Explosive volcanic eruptions</searchLink><br />*<searchLink fieldCode="DE" term="%22Stratigraphic+geology%22">Stratigraphic geology</searchLink><br />*<searchLink fieldCode="DE" term="%22Geological+time+scales%22">Geological time scales</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Tenerife+%28Canary+Islands%29%22">Tenerife (Canary Islands)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Quantitative hazard assessments of active volcanoes require an accurate knowledge of the past eruptive activity in terms of eruption dynamics and the stratified products of eruption. Teide-Pico Viejo (TPV) is one of the largest volcanic complexes in Europe, but the associated eruptive history has only been constrained based on very general stratigraphic and geochronological data. In particular, recent studies have shown that explosive activity has been significantly more frequently common than previously thought. Our study contributes to characterization of explosive activity of TPV by describing for the first time the subplinian eruption of El Boquerón (5,660 yBP), a satellite dome located on the northern slope of the Pico Viejo stratovolcano. Stratigraphic data suggest complex shifting from effusive phases with lava flows to highly explosive phase that generated a relatively thick and widespread pumice fallout deposit. This explosive phase is classified as a subplinian eruption of VEI 3 that lasted for about 9-15 h and produced a plume with a height of up to 9 km above sea level (i.e. 7 km above the vent; MER of 6.9-8.2 × 10 kg/s). The tephra deposit (minimum bulk volume of 4-6 × 10 m) was dispersed to the NE by up to 10 m/s winds. A similar eruption today would significantly impact the economy of Tenerife (e.g. tourism and aviation), with major consequences mainly for the communities around the Icod Valley, and to a minor extent, the Orotava Valley. This vulnerability shows that a better knowledge of the past explosive history of TPV and an accurate estimate of future potentials to generate violent eruptions is required in order to quantify and mitigate the associated volcanic risk. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00445-012-0646-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 2037 Subjects: – SubjectFull: Risk assessment Type: general – SubjectFull: History of volcanic eruptions Type: general – SubjectFull: Explosive volcanic eruptions Type: general – SubjectFull: Stratigraphic geology Type: general – SubjectFull: Geological time scales Type: general – SubjectFull: Tenerife (Canary Islands) Type: general Titles: – TitleFull: The 5,660 yBP Boquerón explosive eruption, Teide-Pico Viejo complex, Tenerife. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: García, Olaya – PersonEntity: Name: NameFull: Bonadonna, Costanza – PersonEntity: Name: NameFull: Martí, Joan – PersonEntity: Name: NameFull: Pioli, Laura IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 02588900 Numbering: – Type: volume Value: 74 – Type: issue Value: 9 Titles: – TitleFull: Bulletin of Volcanology Type: main |
| ResultId | 1 |
