Open AccessPiezomagnetic effects induced by artificial sources at Mt. Vesuvius (Italy): preliminary results of an experimental survey
Author(s) -
Ciro Del Negro,
Egidio Armadillo,
E. Bozzo,
L. Cafarella,
A. Meloni,
Rosalba Napoli,
A. Zirizzotti
Publication year - 1998
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-4344
Subject(s) - earth's magnetic field , magnetometer , amplitude , magnetic field , seismology , volcano , geology , geophysics , precession , flank , intensity (physics) , transient (computer programming) , geodesy , physics , optics , condensed matter physics , quantum mechanics , sociology , anthropology , computer science , operating system
In order to put new constrains on magnetic effects associated with mechanical stresses, high frequency monitoring of the geomagnetic field was carried out during a seismic tomography experiment (TOMOVES'96 project) at Mt. Vesuvius. Eight proton precession and one Cesium magnetometers were installed along a profile on the SW flank of the volcano to observe possible magnetic changes induced by explosions. Measurements were performed at different sampling frequencies (10 Hz, 0.5 Hz and 0.1 Hz). A remarkable change in the intensity of the magnetic field was observed in only one case. The magnetic transient lasted 12-13 min, reaching the maximum amplitude of slightly less than 15 nT