Publication Date:
2017-04-03
Description:
The Salina, Lipari, and Vulcano volcanic ridge
and the surrounding sea sectors (Aeolian Archipelago,
Southern Tyrrhenian Sea, Italy) are characterized by vents
responsible for a recent (〈40 ka—1889/1890 AD) effusive
and explosive subareal activity and repeated, 56 to 7 ka in
age, submarine explosive eruptions from source areas located
between Lipari and Vulcano. A spectral depth estimation of
the magnetic bottom using a fractal method on aeromagnetic
data from Vulcano, Lipari, and Salina volcanic ridge allows us
to constrain the Curie isotherm depth. The elevated portion of
the isotherm is between 2 and 3 km below Salina and Vulcano
and about 1 km below Lipari. The Curie depth results in the
context of other geological and geophysical evidence suggest
that the rise of the Curie isotherm is mainly due to the
occurrence of shallow heat sources such as magma ponds
and associated hydrothermal systems. The short-wavelength
magnetic anomaly field reflects magnetic contrasts from
highly magnetized volcanic bodies, low-magnetization
sediments, and hydrothermally altered rocks. Borehole temperature
data verify the Curie temperature derived from the
magnetic methods on the island of Vulcano.We conclude that
the whole Vulcano, Lipari, and Salina volcanic ridge is active
and should be monitored.
Description:
INGV
Description:
Published
Description:
article 710
Description:
1.10. TTC - Telerilevamento
Description:
3.3. Geodinamica e struttura dell'interno della Terra
Description:
3.4. Geomagnetismo
Description:
3.6. Fisica del vulcanismo
Description:
5.4. Banche dati di geomagnetismo, aeronomia, clima e ambiente
Description:
JCR Journal
Description:
restricted
Keywords:
Magnetic spectral depths
;
Curie temperature
;
volcanism
;
Aeolian Islands
;
04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocks
;
04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods
;
04. Solid Earth::04.05. Geomagnetism::04.05.03. Global and regional models
;
04. Solid Earth::04.05. Geomagnetism::04.05.07. Rock magnetism
;
04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
;
04. Solid Earth::04.07. Tectonophysics::04.07.03. Heat generation and transport
;
04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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