Publication Date:
2017-04-04
Description:
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.
Description:
Published
Description:
B06201
Description:
3.6. Fisica del vulcanismo
Description:
JCR Journal
Description:
reserved
Keywords:
Geophysical
;
hydrogeological
;
experiments
;
Solfatara
;
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
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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