Articles | Volume 6, issue 5
Nat. Hazards Earth Syst. Sci., 6, 773–777, 2006
https://doi.org/10.5194/nhess-6-773-2006

Special issue: Seismo-tectonic electromagnetic effects, precursory phenomena...

Nat. Hazards Earth Syst. Sci., 6, 773–777, 2006
https://doi.org/10.5194/nhess-6-773-2006

  11 Sep 2006

11 Sep 2006

The INGV tectonomagnetic network: 2004–2005 preliminary dataset analysis

F. Masci1, P. Palangio1, and A. Meloni2 F. Masci et al.
  • 1Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Geofisico di L'Aquila, Italy
  • 2Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy

Abstract. It is well established that earthquakes and volcanic eruption can produce small variations in the local geomagnetic field. The Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV) tectonomagnetic network was installed in Central Italy since 1989 to investigate possible effects on the local geomagnetic field related to earthquakes occurrences. At the present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. We report the complete dataset for the period of years 2004–2005. The data of each station are differentiated respect to the data of the other stations in order to detect local field anomalies removing the contributions from the other sources, external and internal to the Earth. Unfortunately, no correlation between geomagnetic anomalies and the local seismic activity, recorded in Central Italy by the INGV Italian Seismic National Network, was found in this period. Some deceptive structures present in the differentiated data are pointed out.

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