Publication Date:
2017-04-04
Description:
Panarea, characterized by gas unrest in 2002–2003, is the volcanic island with the least constrained
structure in the eastern-central Aeolian Arc (Italy). Based on structural measurements, we define here its
deformation pattern relative to the Arc. The main deformations are subvertical extension fractures (63%
of data), normal faults (25%) and dikes (12%). The mean orientation of the extension fractures and faults
is ∼N38◦E, with a mean opening direction of N135◦ ±8◦, implying extension with a moderate component
of dextral shear. These data, matched with those available for Stromboli volcano (pure opening) and
Vulcano, Lipari and Salina volcanoes (predominant dextralmotions) along the eastern-central Arc, suggest
a progressivewestward rotation of the extension direction and an increase in the dextral shear. The dextral
shear turns into compression in the western arc. The recent unrest at Panarea, coeval to that of nearby
Stromboli, may also be explained by the structural context, as both volcanoes lie along the portion of the
Arc subject to extension.
Description:
Protezione Civile, project INGV-DPC-V2
Description:
Published
Description:
288-292
Description:
1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
Description:
3.2. Tettonica attiva
Description:
3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
Description:
3.6. Fisica del vulcanismo
Description:
JCR Journal
Description:
reserved
Keywords:
Panarea
;
Aeolian Arc
;
fault
;
dike
;
2002-2003 unrest
;
04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
;
04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous
;
04. Solid Earth::04.04. Geology::04.04.09. Structural geology
;
04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous
;
04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics
;
04. Solid Earth::04.07. Tectonophysics::04.07.04. Plate boundaries, motion, and tectonics
;
04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress
;
04. Solid Earth::04.07. Tectonophysics::04.07.06. Subduction related processes
;
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
;
04. Solid Earth::04.07. Tectonophysics::04.07.08. Volcanic arcs
;
04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
;
04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
;
05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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