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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy
(S) - IASPEI - International Association of Seismology and Physics of the Earth's
Interior
JSS009 Oral Presentation 2042
Study of self potential anomalous fluctuations in a seismic active zone of
Lucano Apennine (southern Italy): recent results
Dr. Colangelo Gerardo
Dipartimento Infrastrutture e Mobilit Direzione Generale
Vincenzo Lapenna, Luciano Telesca
In the last years geoelectrical fluctuations measured in seismic areas have been attributed to stress and
strain changes, associated with earthquakes. The complex nature of this problem has suggested the
development of monitoring networks based on multiparametric remote stations, in order to perform
geophysical monitoring for a long time period and with a high spatial resolution. Since 2000 a
geophysical monitoring network able to detect geoelectric, seismometric and geochemical parameters
was installed in a seismically active area of southern Apennine chain. The main seismic activity of this
area is originated by three faults systems: the complex setting of Irpinia normal faults, the Potenza
strike-slip fault and the system of Val dAgri normal faults. On May 2004 at Tito station a 20 m depth
hole was drilled to measure in-depth the vertical component of the self-potential (SP) signals. We
analysed and discussed the correlation between anomalous temporal fluctuations in SP signals and local
seismic events.
Keywords: geoelectrical signals, earthquakes, time series