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Papers published in 2015

Remote sensing as tool for development of landslide databases: The case of the Messina Province (Italy) geodatabase

Andrea Ciampalini a,⁎, Federico Raspini a, Silvia Bianchini a,William Frodella a, Federica Bardi a, Daniela Lagomarsino a, FedericoDi Traglia a, SandroMoretti a, Chiara Proietti b, Paola Pagliara b, Roberta Onori b, Angelo Corazza b, Andrea Durob, Giuseppe Basile c, Nicola Casagli a a Department of Earth Science, University of Firenze, via La Pira 4, Firenze 50121, Italy b Italian Civil Protection Department (DPC), via Vitorchiano 2, Roma 00189, Italy c Regional Department of Civil Protection (DRPC), Hydrogeological and Environmental Risks Service and Service for Messina Province, Italy

Submarine landslides and fault scarps along the eastern Mediterranean Israeli continental-slope

Oded Katz (a), Einav Reuven (a)(b), Einat Aharonov (b)
(a) Geological Survey of Israel, 30 Malkhe Israel St., Jerusalem 95501, Israel
(b) The Institute of Earth Sciences, The Hebrew University, Edmond J. Safra Campus, Givat Ram, Jerusalem 91904, Israel

Abstract

The presentwork maps and studies the continental slope off the southeastern Mediterranean Israeli coast. Bathymetric
grids with 15–50 m/pixel resolution were used to map over four hundred submarine landslides and numerous
fault scarps exposed on the sea floor.
Landslide scars are found at water depth ranging between 130mand 1000 m,where slopes exceed a critical gradient
of about 4°–5°. Landslide surface areas range from0.0024 km2 to 91 km2, where the observed size distribution
has a peak (roll over) showing that the most probable landslide area is 1.6 × 10−2 km2. In general landslides
in the north of the studied area are smaller and occur at shallower depth than the southern ones. Landslides show
a hierarchical pattern, resulting fromsequential, retrograding, slope-failure events and are also observed to interactwith
a group of faults oriented sub-parallel to the coast. These faults are a result of salt tectonic related extension,
their scarps forming elongated step-like morphological features rupturing the surface of the continental
slope, as well as the deeper sea floor.
The morphology of the landslides as well as their cross cutting relation with the faults scarps, suggest that these
landslide are recent, apparently younger than 50,000 years. The triggering mechanism is not clear yet, though
several conditionswhich are known to promote slope instability prevail in the studied area: submarine slope gradients
are close to the inferred critical slope angle; continuous sedimentation increases the load on the slope; active
salt tectonic results in an overall extension and surface rupturing by normal faults; the studied area is merely
100 km away from seismogenic zones; and finally, apparent existence of gas close to the surface. Hence, it is suggested
that submarine slope failure events in the studied area are also possible in the future.
© 2015 Elsevier B.V. All rights reserved

 
 
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FACTS & FIUGRES

GA n°: 312384
Project type: Small collaborative project
Start date: 01/03/2013
Duration: 24 months
Total budget: 2,488 mln. €
EC funding: 1,964 mln. €
Total effort in person-month: 284
Other info: Visit CORDIS

 

EU FP7

The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement nº 312384. LAMPRE is managed by the Research Executive Agency (REA)

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