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GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L13302, doi:10.1029/2006GL026064, 2006

Large submarine landslides offshore Mt. Etna

Maria Teresa Pareschi

Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy


Enzo Boschi

Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy


Francesco Mazzarini

Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy


Massimiliano Favalli

Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy


Abstract

High resolution seismic data, we collected in the Ionian sea, reveal large submarine landslide deposits offshore from Mt. Etna (Italy), spatially consistent with the eastern flank collapse of this volcano. A large debris-avalanche deposit, we relate to the Valle del Bove scar, displays long offshore run-outs (till 20 km) and a volume of a few tens of cubic kilometres (16–21 km3). Other landslide deposits are also imaged, in particular a striking unique record of the relative timing of multiple submarine large slump events.

Received 16 February 2006; accepted 17 May 2006; published 1 July 2006.

Index Terms: 3070 Marine Geology and Geophysics: Submarine landslides; 9335 Geographic Location: Europe; 8488 Volcanology: Volcanic hazards and risks.

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Citation: Pareschi, M. T., E. Boschi, F. Mazzarini, and M. Favalli (2006), Large submarine landslides offshore Mt. Etna, Geophys. Res. Lett., 33, L13302, doi:10.1029/2006GL026064.