Long Term Ground Deformation in Volcanic Islands: Tenerife and La Palma, Canaries

Fernández Torres, José and González, Pablo J. and Pallero, Jose L. G. and Arjona, Alicia and Prieto Morin, Juan Francisco and Seco, Andrés and Rodríguez Velasco, Gema and Camacho, Antonio G. and Aparicio, A. (2008). Long Term Ground Deformation in Volcanic Islands: Tenerife and La Palma, Canaries. In: "ETS2008 New challenges in Earth's Dynamics", 1-5 sept 2008, Jena, Deuchland. pp. 1-27.

Description

Title: Long Term Ground Deformation in Volcanic Islands: Tenerife and La Palma, Canaries
Author/s:
  • Fernández Torres, José
  • González, Pablo J.
  • Pallero, Jose L. G.
  • Arjona, Alicia
  • Prieto Morin, Juan Francisco
  • Seco, Andrés
  • Rodríguez Velasco, Gema
  • Camacho, Antonio G.
  • Aparicio, A.
Item Type: Presentation at Congress or Conference (Article)
Event Title: ETS2008 New challenges in Earth's Dynamics
Event Dates: 1-5 sept 2008
Event Location: Jena, Deuchland
Title of Book: Proceedings of the 16th International Symposium on Earth Tides
Date: 1 September 2008
Subjects:
Faculty: E.T.S.I. en Topografía, Geodesia y Cartografía (UPM)
Department: Ingeniería Topográfica y Cartografía [hasta 2014]
UPM's Research Group: Geovisualización, Espacios Singulares y Patrimonio GESyP
Creative Commons Licenses: None

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Abstract

Canary Islands form a volcanic archipelago with 7 major islands with a long-standing history of volcanic activity that began more than 40 million years ago More than a dozen eruptions have occurred on the islands of Tenerife, Lanzarote, and La Palma since the 16 th century. We used several geodetic techniques in order to achieve ground deformation on those islands. We propose that the measured deformation is directly related to gravitational sinking of the intrusive core the island into a weak lithosphere. We favour this thesis, relative to that of spreading, because neither the published data on the geology of Tenerife show evidence of compressional structures around the base of the island nor the GPS data indicate significant radial displacements, which would have been present in the case of spreading. In adition, given that the crust has been inflected under the mass of Tenerife, following Borgia (1994), we propose that the volcanic edifice is in a state of compression, which, in some volcanoes, has in the past been associated with hazardous explosive eruptions.

More information

Item ID: 43807
DC Identifier: http://oa.upm.es/43807/
OAI Identifier: oai:oa.upm.es:43807
Deposited by: Prof Juan Prieto Morin
Deposited on: 31 Oct 2016 11:17
Last Modified: 01 Oct 2019 10:22
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