IASPEI - Picture Gallery

IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy
(S) - IASPEI - International Association of Seismology and Physics of the Earth's
Interior
JSS007 Poster presentation 1970
Looking at Tenerife (Canary Islands) from a magnetic perspective
Dr. Alicia Garcia
Volcanology Spanish Research Council IAVCEI
Nieves Snchez, Massimo Chiappini, Roberto Carluccio, Riccardo De Ritis, Iacopo
Nicolosi, Alessandro Pignatelli, Isabel Blanco-Montenegro
Tenerife is one of the largest and complex oceanic volcanic islands on our planet. A large variety of
investigations has been conducted during the last decade aimed at improving the knowledge of the
volcanic evolution of the region. After the relevant increase of seismic activity which started in 2004,
Spanish and Italian authorities have worked together to establish a research consortium to develop an
appropriate plan for assessing the hazard in this region. Remotely sensed data such as high resolution
aeromagnetics can shed new light on the volcanic and tectonic setting. This technique is, in fact,
particularly suitable to study these areas due to the high magnetic contrasts linked to volcanic
structures. Furthermore, surveying poorly accessible sites with airborne geophysics can be expeditious
and effective. Joint Spanish and Italian efforts have been therefore ongoing to study the area from a
magnetic perspective, acquiring new data during April 2006. A towed-bird, optically pumped
magnetometer was used in a high resolution helicopter-borne magnetic survey which was conducted all
over Tenerife and its marine surrounding sector. The obtained magnetic anomaly images, compiled at
the geomagnetic epoch 2006.4, reveal a complex pattern which is suggestive of the composite evolution
of the entire system.
Keywords: magnetic anomalies, teide, aeromagnetism