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The Marsili Volcanic Seamount (Southern Tyrrhenian Sea): A Potential Offshore Geothermal Resource

Energies (Basel), 2014, Vol.7 (7), p.4068-4086 [Peer Reviewed Journal]

Copyright MDPI AG 2014 ;ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en7074068

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  • Title:
    The Marsili Volcanic Seamount (Southern Tyrrhenian Sea): A Potential Offshore Geothermal Resource
  • Author: Italiano, Francesco ; Santis, Angelo De ; Favali, Paolo ; Rainone, Mario Luigi ; Rusi, Sergio ; Signanini, Patrizio
  • Subjects: Broadband ; Geothermal ; geothermal energy exploration ; Geothermal resources ; Italy ; Marsili ; Offshore ; Offshore engineering ; Rocks ; Seamounts ; Seismic phenomena ; volcanic seamount
  • Is Part Of: Energies (Basel), 2014, Vol.7 (7), p.4068-4086
  • Description: Italy has a strong geothermal potential for power generation, although, at present, the only two geothermal fields being exploited are Larderello-Travale/Radicondoli and Mt. Amiata in the Tyrrhenian pre-Apennine volcanic district of Southern Tuscany. A new target for geothermal exploration and exploitation in Italy is represented by the Southern Tyrrhenian submarine volcanic district, a geologically young basin (Upper Pliocene-Pleistocene) characterised by tectonic extension where many seamounts have developed. Heat-flow data from that area show significant anomalies comparable to those of onshore geothermal fields. Fractured basaltic rocks facilitate seawater infiltration and circulation of hot water chemically altered by rock/water interactions, as shown by the widespread presence of hydrothermal deposits. The persistence of active hydrothermal activity is consistently shown by many different sources of evidence, including: heat-flow data, gravity and magnetic anomalies, widespread presence of hydrothermal-derived gases (CO2, CO, CH4), 3He/4He isotopic ratios, as well as broadband OBS/H seismological information, which demonstrates persistence of volcano-tectonic events and High Frequency Tremor (HFT). The Marsili and Tyrrhenian seamounts are thus an important-and likely long-lasting-renewable energy resource. This raises the possibility of future development of the world's first offshore geothermal power plant.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: ISSN: 1996-1073
    EISSN: 1996-1073
    DOI: 10.3390/en7074068
  • Source: GFMER Free Medical Journals
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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