Tsunamigenic potential of a newly-discovered active fault zone in the outer Messina Strait, Southern Italy.

Fu, Lili, Heidarzadeh, Mohammad, Cukur, Deniz, Chiocci, Francesco L., Ridente, Domenico, Gross, Felix, Bialas, Jörg and Krastel, Sebastian (2017) Tsunamigenic potential of a newly-discovered active fault zone in the outer Messina Strait, Southern Italy. Geophysical Research Letters, 44 . DOI 10.1002/2017GL072647.

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Abstract

The 1908 Messina tsunami was the most catastrophic tsunami hitting the coastline of Southern Italy in the younger past. The source of this tsunami, however, is still heavily debated, and both rupture along a fault and a slope failure have been postulated as potential origin of the tsunami. Here we report a newly discovered active Fiumefreddo-Melito di Porto Salvo Fault Zone (F-MPS_FZ), which is located in the outer Messina Strait in a proposed landslide source area of the 1908 Messina tsunami. Tsunami modeling showed that this fault zone would produce devastating tsunamis by assuming slip amounts of ≥5 m. An assumed slip of up to 17 m could even generate a tsunami comparable to the 1908 Messina tsunami, but we do not consider the F-MPS_FZ as a source for the 1908 Messina tsunami because its E-W strike contradicts seismological observations of the 1908 Messina earthquake. Future researches on the F-MPS_FZ, however, may contribute to the tsunami risk assessment in the Messina Strait.

Document Type: Article
Keywords: 1908 Messina earthquake and tsunami; active fault; tsunami source; tsunami modeling
Research affiliation: Kiel University > Faculty of Mathematics and Natural Sciences > Institute of Geosciences
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/2017GL072647
ISSN: 0094-8276
Projects: MaGIC
Expeditions/Models/Experiments:
Date Deposited: 22 Jul 2016 08:55
Last Modified: 15 Sep 2017 23:38
URI: http://oceanrep.geomar.de/id/eprint/33447

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