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Authors: Di Mauro, D.* 
Lepidi, S.* 
Meloni, A.* 
Palangio, P.* 
Title: Magnetic and Electromagnetic signals related to tectonic activity: updates and new analyses on measurements in Central Italy
Journal: Natural Hazards and Earth System Sciences 
Series/Report no.: 6 / 5 (2005)
Publisher: EGU - Copernicus GmbH
Issue Date: 2005
Keywords: Magnetic and Electromagnetic signals
Tectonic activity
Central Italy
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies 
04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous 
Abstract: Tectonomagnetic field observations from absolute magnetic field levels have been collected in Central Italy since 1989 by means of a network of four absolute magnetometer stations, including the geomagnetic observatory of L’Aquila (42 23 N, 13 19 E) used as reference for differentiation; also electromagnetic variations from VLF signals have been recorded in the last years by means of VLF search coil wide-band antennas. Many reports proved the occurrence of electromagnetic effects clearly related to tectonic events (seismic and volcanic activity) in active areas of our planet. In this paper we show the variation of some electromagnetic parameters which could be related to local and regional seismic activity for the most recent years 2002 and 2003. We also report the seismic activity recorded in this area by the Italian seismic national network. Some tentative analysis (in the wavelets and statistical approach) on the historical and recent dataset allow a better characterization of electromagnetic properties of the study area, at different temporal and spatial scales.
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