Publication Date:
2017-04-04
Description:
The 2002–2003 Etna eruption is studied through
earthquake distributions and surface fracturing. In
September 2002, earthquake-induced surface rupture
(sinistral offset 0.48 m) occurred along the E-W striking
Pernicana Fault (PF), on the NE flank. In late October, a
flank eruption accompanied further ( 0.77 m) surface
rupturing, reaching a total sinistral offset of 1.25 m; the
deformation then propagated for 18 km eastwards to the
coastline (sinistral offset 0.03 m) and southwards, along
the NW-SE striking Timpe (dextral offset 0.04 m) and, later,
Trecastagni faults (dextral offset 0.035 m). Seismicity
(〈4 km bsl) on the E flank accompanied surface
fracturing: fault plane solutions indicate an overall ESEWNWextension
direction, consistent with ESE slip of the E
flank also revealed by ground fractures. A three-stage model
of flank slip is proposed: inception (September earthquake),
climax (accelerated slip and eruption) and propagation (E
and S migration of the deformation).
Description:
Published
Description:
2286
Description:
1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
Description:
3.2. Tettonica attiva
Description:
3.5. Geologia e storia dei sistemi vulcanici
Description:
3.6. Fisica del vulcanismo
Description:
4.3. TTC - Scenari di pericolosità vulcanica
Description:
JCR Journal
Description:
reserved
Keywords:
volcano seismology
;
surface fracturing
;
flank slip
;
eruption
;
Etna
;
04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
;
04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes
;
04. Solid Earth::04.02. Exploration geophysics::04.02.99. 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::04.06. Seismology::04.06.99. General or miscellaneous
;
04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution
;
04. Solid Earth::04.06. Seismology::04.06.02. Earthquake interactions and probability
;
04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
;
04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
;
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::04.07.05. Stress
;
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
;
04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
;
04. Solid Earth::04.08. Volcanology::04.08.03. Magmas
;
04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks
;
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
