Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2893
Authors: | Bruno, P. P.* Ricciardi, G. P.* Petrillo, Z.* Di Fiore, V.* Troiano, A.* Chiodini, G.* |
Title: | Geophysical and hydrogeological experiments from a shallow hydrothermal system at Solfatara Volcano, Campi Flegrei, Italy: Response to caldera unrest | Journal: | J. Geophys. Res. | Series/Report no.: | / 112 (2007) | Publisher: | American Geophysical Union | Issue Date: | 5-Jun-2007 | DOI: | 10.1029/2006JB004383 | Keywords: | Geophysical hydrogeological experiments Solfatara |
Subject Classification: | 03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamics 03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systems |
Abstract: | Integration of high-resolution geophysical and hydrogeological investigations at Solfatara Volcano, Campi Flegrei, Italy, allowed us to (1) image the shallow and intermediate subsurface to the crater, (2) elucidate patterns in the shallow subsurface degassing, and (3) refine and upgrade volcano-monitoring strategies for this dynamic area. Our results show that the subsurface to the crater can be divided roughly into two zones: a dry, outcropping layer overlying a horizon saturated by hydrothermal fluids. Within this saturated zone, intersections of dominant NW- and ENE-striking structural lineaments act as preferential escape conduits for the fluids which generate high microseismic noise amplitudes in the southeastern part of the crater. Hydrogeological data suggest an uprising of the isotherms below Solfatara crater, and a marked increment of fluid degassing, over the last 40 years. Sudden variations of both seismic noise level and noise cycling are positively correlated with early stages of ground inflation during the AD 2000 uplift. We believe therefore that monitoring of seismic noise can be used for upgrading early warning strategies in this sector of the Campi Flegrei volcanic system. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
BruRic_2007.pdf | 1.91 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
53
checked on Feb 10, 2021
Page view(s) 50
219
checked on Apr 17, 2024
Download(s)
34
checked on Apr 17, 2024