Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1670
Authors: Di Maio, R.* 
Di Sevo, V.* 
Giammetti, S.* 
Patella, D.* 
Piscitelli, S.* 
Silenziario, C.* 
Title: Self-potential anomalies in some Italian volcanic areas
Issue Date: Jan-1996
Series/Report no.: 1/39 (1996)
URI: http://hdl.handle.net/2122/1670
Keywords: self-potential
volcanology
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods 
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
Abstract: The study of Self-Potential (SP) space and time variations in volcanic areas may provide useful information on both the geometrical structure of the volcanic apparatuses and the dynamical behaviour of the feeding and uprising systems. In this paper, the results obtained on the islands of Vulcano (Eolian arc) and Ponza (Pontine archipelago) and on the Mt. Somma-Vesuvius complex are shown. On the island of Vulcano and on the Mt. Somma-Vesuvius apparatus areal SP surveys were performed with the aim of evidencing anomalies closely associated to the zones of major volcanic activity. On the island of Vulcano a profile across the fumaroles along the crater rim of the Fossa Cone was also carried out in order to have a direct relationship between fumarolic fracture migration and flow rate and SP anomaly space and time variations. The areal survey on the island of Ponza, which is considered an inactive area, is assumed as a reference test with which to compare the amplitude and pattern of the anomalies in the active areas. A tentative interpretation of the SP anomalies in volcanic areas is suggested in terms of electrokinetic phenomena, related to the movement of fluids of both volcanic and non-volcanic origin.
Appears in Collections:Annals of Geophysics

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