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Geodetic volcano monitoring in canary islands. Present and new perspectives

AuthorsFernández Torres, José ; Luzón, Francisco
KeywordsGeodetic volcano monitoring
Canary islands
Issue Date2002
PublisherUniversidad Complutense de Madrid
CitationFísica de la Tierra 2002, 14, 109-126
AbstractTraditionally, observations of seismic, hydrologic, or fumarolic activity have proven useful in volcano monitoring. Since volcanic activity almost inevitably produces deformation and gravity changes before, during, between and after the events, geodetic techniques are now included, in the light of the IAVCEI’s recommendations regarding routine monitoring. They are proving to be a powerful tool in the monitoring of volcanic activity by detecting anomalies sometimes months or weeks before the magma flow leads to earthquakes or other eruption precursors. The Canary Islands, with a population of about 1.8 million people, are located less than 100... (Leer más) km from the African continent. Despite being on a passive margin, they are a volcanic archipelago with a long standing history of volcanic activity that began more than 40 m.y. ago. At least a dozen eruptions occurred on the islands of Lanzarote, Tenerife, and La Palma between 1500 and 1971. This is a typical case in which the volcanic monitoring system must be carefully designed. The system must be efficient, but must also make full use of existing facilities and have acceptable installation and running costs, in line with the current level of activity. This paper describes a proposal for the geodetic monitoring system in Canary Islands using terrestrial and space techniques.
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