Please use this identifier to cite or link to this item:
|Authors: ||Cocchi, L.*|
Caratori Tontini, F.*
Del Negro, C.*
|Title: ||Looking inside the Panarea Island (Aeolian Archipelago, Italy) by gravity and magnetic data|
|Title of journal: ||Annals of Geophysics|
|Series/Report no.: ||1/51 (2008)|
|Publisher: ||Editrice Compositori|
|Issue Date: ||Feb-2008|
|Abstract: ||In this paper we show and discuss the results of gravity and magnetic surveys of Panarea Island and its archipelago. The most recent volcanic manifestation occurred in November 2002 with a shallow submarine gas eruption between the islets of Dattilo, Panarelli, Lisca Bianca, Bottaro and Lisca Nera.
Currently, the activity of Panarea is monitored through a multidisciplinary study under the umbrella of the Italian Department of Civil Protection with the goal of defining the hazard of this area. With this aim, in May 2006 the first gravity and magnetic surveys of Panarea Island and its archipelago were performed. The offshore magnetic data were obtained using a marine magnetometer, a Geometrics G880, from the Istituto Idrografico dell Marina (IIM). Onshore and offshore magnetic data were integrated into an unique dataset for complete magnetic coverage of the study area.
By using two micro-gravimeters (LaCoste & Romberg), gravity data were collected along tracks every 250 meters. The gravity dataset was processed using the standard method. A Bouguer reduction was applied to the free-air gravity dataset using a detailed digital elevation model of the island and the neighbouring sea after evaluation of the optimal Bouguer density to reduce the topographic effect.
The result is a Bouguer anomaly map that shows lateral variations in density distribution and the relationships between the shallow volcanic/crustal features and tectonic lineaments. This evidence is also highlighted by the magnetic pattern, which suggests the importance of the youngest volcanic deposits with respect to the magnetic features of the island.|
|Appears in Collections:||04.05.04. Magnetic anomalies|
04.03.04. Gravity anomalies
Annals of Geophysics
Papers Published / Papers in press
Files in This Item:
|cocchi.pdf||14.54 MB||Adobe PDF||View/Open
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.