Heat flow and matter composition of the lithosphere of the World Ocean

Verzhbitskii, E. V.

doi:10.1134/s0001437007040133

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…The pattern of the observed anomalies fits with a Curie isotherm mean depth located at around 4-5 km below Marsili crest, indicating a temperature of more than 600 °C at the volcano base and highlighting the possible presence of magmatic bodies. The high internal temperatures are also supported by the extremely high heat-flow measurements carried out on Marsili [11,24]. All those complementary data coherently suggest that Marsili seamount contains an intense and shallow heat source.…”

Section: Discussionsupporting

confidence: 56%

“…Other geodynamic-related morphologic features are the numerous volcanic structures forming an arc all along the south-eastern margin of the basin: the Aeolian Arc, representing the emerged part; Palinuro, Glabro, Alcione and Lametini, representing the northern submerged arm; Eolo, Enarete and Sisifo, representing the north-western submerged arm ( Figure 2; [23]). The heat-flow anomalies of Southern Tyrrhenian Sea [11,12] [24]. Those values fit with the geophysical data, collected in the last decades such as:…”

Section: Geothermal Potential Of Southern Tyrrhenian Basin and Marsilsupporting

confidence: 61%

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

et al. 2014

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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 (CO 2 , CO, CH 4 ), 3 He/ 4 He 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. OPEN ACCESSEnergies 2014, 7 4069

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Section: Discussionsupporting

confidence: 56%

Section: Geothermal Potential Of Southern Tyrrhenian Basin and Marsilsupporting

confidence: 61%

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

et al. 2014

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“…The basalt lava rocks composing the edifice belong mainly to the calc-alkaline and to the tholeitic magma series which, due to the quick cooling process after eruption, are characterised by a high degree of fracturing and vesicularity [10]. The submarine volcanic structure gets the maximum of heat anomaly flow of the whole Tyrrhenian Sea with values close to 250 mW/m 2 [3], but recent measurements report values up to 500 mW/m 2 within the crest's summit [11]. To further investigate the seamount's properties a comprehensive measurement campaign took place in 2006 and among the most important data, gravimetric and magnetic anomaly measurements were taken [8].…”

Section: -South Tyrrhenian Basin and Marsili Seamount Geophysicsmentioning

confidence: 99%

Perspectives of offshore geothermal energy in Italy

Armani

Paltrinieri²

2013

EPJ Web of Conferences

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Summary. -Italy is the first European and world's fifth largest producer of geothermal energy for power generation which actually accounts for less than 2% of the total electricity production of the country. In this paper after a brief introduction to the basic elements of high-enthalpy geothermal systems, we discuss the potentialities represented by the submarine volcanoes of the South Tyrrhenian Sea. In particular we focus on Marsili Seamount which, according to the literature data, can be considered as a possible first offshore geothermal field; then we give a summary of the related exploitation pilot project that may lead to the realization of a 200 MWe prototype power plant. Finally we discuss some economic aspects and the development perspectives of the offshore geothermal resource taking into account the Italian energy framework and Europe 2020 renewable energy target.

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