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LONG-TERM TEMPERATURE MONITORING OF VOLCANIC AREAS BY DISTRIBUTED OPTICAL FIBER SENSORS
Author(s)
Type
Conference paper
Language
English
Obiettivo Specifico
Status
Published
Conference Name
Issued date
September 2008
Conference Location
Malta
Sponsors
I.N.G.V.
Keywords
Abstract
We present the first results of long- term monitoring of temperature profiles at the Campi
Flegrei caldera. The measurements were carried out along a 76 meters-deep borehole
already equipped with a borehole strain-meter. We installed a cable containing a loop of
optical fiber in order to use a fiber-optics distributed sensor based on stimulated
Brillouin scattering. The obtained data are consistent with results of both deep and
surface geothermal explorations and indicate that geothermal gradient can be efficiently
measured and monitored by the proposed technique.
Flegrei caldera. The measurements were carried out along a 76 meters-deep borehole
already equipped with a borehole strain-meter. We installed a cable containing a loop of
optical fiber in order to use a fiber-optics distributed sensor based on stimulated
Brillouin scattering. The obtained data are consistent with results of both deep and
surface geothermal explorations and indicate that geothermal gradient can be efficiently
measured and monitored by the proposed technique.
References
A. Parascandola (1947) I fenomeni bradisismici del Serapeo di Pozzuoli.
Genovese, Napoli
R. Bernini, A. Minardo, L. Zeni, IEEE Photon. Tech. Lett. 16 1143-1145,
(2004)
A. Minardo, R. Bernini, L. Zeni, L. Thevenaz, F. Briffod, Meas. Science
and Tech. 16 900-908 (2005)
M. Niklès, L. Thévenaz, and P. Robert J. Lightwave Technol. 15, 1842–
1851 (1997)
AGIP, Geologia e Geofisica del sistema geotermico dei Campi Flegrei,
Servizi Centrali per l’Esplorazione, SERG MMESG, San Donato (1987)
Genovese, Napoli
R. Bernini, A. Minardo, L. Zeni, IEEE Photon. Tech. Lett. 16 1143-1145,
(2004)
A. Minardo, R. Bernini, L. Zeni, L. Thevenaz, F. Briffod, Meas. Science
and Tech. 16 900-908 (2005)
M. Niklès, L. Thévenaz, and P. Robert J. Lightwave Technol. 15, 1842–
1851 (1997)
AGIP, Geologia e Geofisica del sistema geotermico dei Campi Flegrei,
Servizi Centrali per l’Esplorazione, SERG MMESG, San Donato (1987)
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