Publication Date:
2017-04-04
Description:
We analyse seismograms of the slump episodes at
Stromboli on December 30, 2002. Using a simple single
force model, we estimate the volume involved in the
individual subevents and attempt a chronological
reconstruction of the whole process. Our results indicate
the occurrence of two main events that could be interpreted
as a submarine slump, which caused the observed tsunami,
and a subaerial slump, which did not produce destructive
sea waves. A total volume of about 20 106 m3 results for
the submarine event, which developed over about 2 minutes
with several distinct detachments, the first and largest
displacing a volume of 10.8 106 m3. The second,
subaerial, slump involved at least 2.5 106 m3, in about
90 s. A large long period pulse is also recognizable in the
seismograms of the Stromboli station. We tentatively
interpret this feature as tilt caused by the water load
associated with the inundation in the Ficogrande area, on
the northeastern side of the island.
Description:
Published
Description:
(L02605)
Description:
reserved
Keywords:
Stromboli Volcano
;
seismological description
;
Fractures and faults
;
Structural Geology
;
04. Solid Earth::04.04. Geology::04.04.09. Structural geology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
1913603 bytes
Format:
application/pdf
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