The Mediterranean French coastal exposed to tsunami risk: from hazard to territorial vulnerability studies

Authors: Laurie Boschetti*, Université Côte d'Azur, OCA, CNRS, IRD, Géoazur, Mansour Ioualalan, Université Côte d'Azur , IRD, CNRS, OCA, Géoazur, Damienne Provitolo, Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, Emmanuel Tric, Université Côte d'Azur, CNRS, OCA, IRD, Géoazur, Stephan Grilli, Department of Ocean Engineering, Graduate School of Oceanography, Fatima Nemati, Department of Ocean Engineering, Graduate School of Oceanography, Christophe Larroque, Université Côte d'Azur, CNRS, OCA, IRD, Géoazur
Topics: Hazards and Vulnerability, Hazards, Risks, and Disasters, Geographic Information Science and Systems
Keywords: Hazard, GIS, territorial vulnerability, tsunami
Session Type: Paper
Day: 4/5/2019
Start / End Time: 5:00 PM / 6:40 PM
Room: Taylor, Marriott, Mezzanine Level
Presentation File: No File Uploaded

The United Nations General Assembly has designated in 2015 the 5th of November as the World Tsunami Awareness Day, after catastrophic events as in Sumatra (Indonesia) in 2004, in Tohoku (Japan) in 2011. Recently, an event, the tsunami in Sulawesi (Indonesia) in September 2018, came as a reminder of their destructive power. Tsunami events are indeed generally destructive and lead to important human and material damages. Even if most of tsunami events happened in the Pacific Ocean, approximately 15% occurred in the Mediterranean Sea (NOAA, 2016). That is why the Intergovernmental Oceanographic Commission (IOC) called to be well prepared and ready for tsunamis. Some of the Mediterranean events, in particular the one of the 23rd February 1887, that happened after the Ligurian earthquake, produced significant human and material damages on the French and Italian Mediterranean coastal area. This attractive and increasingly densely populated coast concentrates today many strategic and major issues, making it a field of study for institutional and academic actors. In this study, we focused our research on the hazard-vulnerability continuum in order to consider analyzing the risk of tsunami along the French Riviera. Consequently, starting from mechanism understanding and hazard modeling and determining the spatial extension of a tsunami produced by a local earthquake, to identification and assessment of the vulnerability of strategic territorial issues (population, health facilities, fire stations, etc.). GIS and tsunami numerical modeling are used to map, assess and produce scenarios of hazards and territorial vulnerabilities.

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