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Publications
Publications (36)
Tanzarisques est un projet de recherche pluridisciplinaire qui a permis une évaluation inédite desmenaces volcaniques du Ol Doinyo Lengaï en Tanzanie. Les résultats constituent une première étape dansl'identification et la spatialisation des aléas et des risques volcaniques, dont les conséquences potentiellesdépasseront largement l’espace du Lengaï...
Based on surveys and interviews conducted in 2020 and 2021, this article explores perceptions and preparations regarding volcanic risk in Guadeloupe. Although adaptive strategies have evolved since the last eruptive crisis in 1976, the study reveals widespread ignorance of evacuation procedures, reveals the ineffectiveness of a top-down management...
Les territoires ultra-marins français sont quasiment tous concernés par le risque tsunami. Mayotte n’échappe pas à cet aléa majeur, et aux risques induits par d’importants enjeux situés sur sa bande littorale. Depuis 2018, du fait de l’activité sismo-volcanique liée à l’apparition d’un nouveau volcan sous-marin (Mont Fani Maoré), plusieurs simulati...
On 19 September 2021, the Cumbre Vieja volcano (renamed Tajogaite) erupted on the island of La Palma (Canary Islands). One month after the eruption, a multidisciplinary team conducted an in situ geomorphological, geographical and socio-environmental diagnosis to complement the remote monitoring of the crisis management and impacts of the eruption....
En contexte post-catastrophe les moyens aériens représentent une solution efficace pour agir avec rapidité dans un environnement dévasté. Parmi ces moyens, la flexibilité, l'atout économique et les possibilités que peuvent offrir les aéronefs télépilotés, aussi appelés drones, notamment en termes de reconstitutions 3D et de cartographie, en font un...
The objective of our study is to establish an assessment of four volcanic hazards in a country threatened by the eruption of the OlDoinyo Lengai volcano. The last major eruption dates back to 2007-2008 but stronger activity in 2019 has revived the memory of volcanic threats to the Maasai and Bantu communities and human activities (agro-pastoral and...
The intense hurricane season of 2017 in the North Atlantic brought a number of major hurricanes including Hurricane Irma (cat. 5), which landed on the French islands of St. Martin and St. Barthélemy. These two French Overseas Collectivities, separated by a distance of some 20 kilometres, have very different territorial and social characteristics. T...
Cet article explore les relations entre les caractéristiques territoriales et les capacités de relèvement d’une petite île caribéenne, confrontée à un événement cyclonique exceptionnel : Saint-Barthélemy face à IRMA (sept. 2017). L’analyse repose sur l’acquisition de données récoltées in situ dans le cadre d’un retour d’expérience (RETEX) scientifi...
Le projet TIREX (Transfert des apprentissages de retours d'expérience scientifiques),
dirigé par Pr. Frédéric LEONE, part du constat que les résultats des retours
d'expérience scientifiques ne sont pas assez communiqués aux acteurs des
territoires concernés. En analysant la saison cyclonique 2017 dans les Petites Antilles, TIREX répond à la fois à...
La Guadeloupe est soumise aux cyclones qui génèrent des dégâts importants. En fonction du contexte économique local et mondial, les cyclones engendrent des ruptures positives ou négatives pour les sociétés et les économies insulaires. Les formes adaptatives demeurent les plus nombreuses à toutes les échelles du territoire à l’initiative des collect...
The hurricane season 2017 in the North Atlantic was intense. The events recalled the exposure of the West Indies to these phenomena sometimes devastating, such as the cyclone Irma which caused heavy losses on the French islands of Saint-Martin and Saint-Barthélemy. The post-event phase sometimes gives rise to an experience feedback (RETEX), which r...
L’augmentation du volume des débris, les impératifs de protection de l’environnement, le coût de la collecte et du traitement pour les collectivités territoriales ou les entreprises sont des défis de plus en plus complexes dans les territoires soumis à des catastrophes naturelles, technologiques ou géopolitiques (conflits) destructrices. Le passage...
In the aftermath of a disaster, the debris caused by the destruction of property or vegetation become a crucial problem. The increase in the volume of debris, the growing requirements for environmental protection, the cost of waste collection and treatment for local authorities or companies are increasingly complex challenges for lands subject to n...
This article provides a spatial and comparative approach to evaluate the territorial accessibility in the event of a
volcanic crisis in the French West Indies. A spatial assessment of resources and populations exposed to volcanic
hazards is performed, followed by an assessment of the risk of territorial isolation due to lahars. Modelling of the
ris...
This study aims to better understand coastal processes associated with extreme cyclonic events through the study of the coastal changes, flooding and damage that resulted from the passage of a category 5 hurricane (Irma) on 6 September 2017 over the islands of Saint-Martin and Saint-Barthélemy in the Lesser Antilles. Hurricane Irma was contextualiz...
In the aftermath of a disaster, the debris caused by the destruction of property or the vegetation become a crucial problem. The increase in the volume of debris, the growing requirements for environmental protection and the cost of waste collection and treatment for local authorities or companies are challenges increasingly complex for the territo...
The Caribbean islands constitute a dynamic and old touristic area, but it depends on the international economic context. Different forms of tourism meet the requirements of varied customers and are more or less appropriated by insular actors, allowing local development. The level of development generally leads to a strong appropriation by the popul...
Background
Climate change and rising sea level will certainly lead to significant changes in the management of low-lying coastal areas in the coming decades. While the most recent studies in the field of coastal storms-related flooding are increasingly integrated, simultaneously addressing hazards and vulnerability, as well as population risk perce...
This paper develops a spatial and comparative approach focused on the accessibility during a volcanic crisis. After an assessment of the resources and populations exposed, it leads to a cartography of the territorial isolation risk in case of lahars. This indirect risk is modeled using road accessibility graph-based calculations and indicators taki...
Preventing people exposed to natural hazards is a fundamental lever to reduce their vulnerability and the associated risk. In this context, evacuation maps can be considered as a useful tool to educate populations in order to get an appropriate behavior in case of disaster, and to maintain a culture of the risk in exposed areas. Since the catastrop...
Contributions of Geographical Sciences to Tsunami Risk Prevention in Morocco
By focusing on Morocco, this article shows how the geographical sciences can contribute to improving the knowledge of tsunami risk and its prevention following an integrated and spatial approach based on the concept of scenario. The main results presented here come from t...
This report focuses on large scale accessibility mapping and evacuation simulations of the ASTARTE test sites. It presents the main results achieved in the Task 9.4 of the WP9. The aim of this task is to provide operatives with scenario-based tools and solutions to develop evacuation plans for local communities.
The hazard scenarios were based on t...
Dans le cadre du programme de recherche CRISSIS, une analyse des perceptions et des représentations sociales sur le risque de submersion marine à Leucate est réalisée. Le projet se concentre sur trois secteurs de la commune particulièrement exposés au risque de submersion marine en raison de leur implantation, entre mer et lagune, sur un cordon lit...
L’accessibilite routiere revet un caractere particulierement strategique pour le maintien des activites economiques, mais egalement pour les interventions de secours. En montagne, les avalanches representent une menace particulierement forte car, outre les victimes et dommages directs qu’elles peuvent causer, elles entrainent tres souvent une perte...
Road accessibility is highly strategic for the maintenance of economic activities but also for the emergency services. In mountains, snow avalanches are a particularly strong threat because, in addition to the victims and direct damage, they cause a loss of accessibility more or less prolonged when the networks are already strongly altered by seaso...
Territorial Accessibility Modeling Serving Tsunami Crisis Management (Mayotte, France)
Mayotte, a French territory located in the southeastern Indian Ocean is particularly exposed to natural hazards. Since 2010, the PREPARTOI Program has focused on assessing the tsunami risk in this region and developed original methods to do so. The aim of this ar...
IAVCEI General Assembly, Kagoshima, Japan, 19-24 july 2013
Mayotte, a French territory located in the southeastern Indian Ocean is particularly exposed to natural hazards. Since 2010, the PREPARTOI Program has focused on assessing the tsunami risk in this region and developed original methods to do so. The aim of this article is to bring forward a study of terrestrial accessibility before a tsunami crisis...
This paper seeks to estimate the exposure of the Atlantic coast of Morocco to tsunami risk. A methodological approach and a first set of tsunami risk indicators are presented. The proposed approach is based upon a coupling of tsunami numerical modeling with coastal land use geo-referenced databases. Tsunami numerical modeling is performed for a 175...
Le projet de recherche PREPARTOI propose d’effectuer une étude intégrée du risque de tsunami dans les deux principaux territoires français de l’Océan Indien que sont La Réunion et Mayotte.
Le retour d’expérience mené à la suite du tsunami du 26 décembre 2004 en Indonésie dans le
cadre du programme Tsunarisque, nous a permis d’appréhender ce risque sur d’autres territoires
exposés. Cette communication développe une approche d’évaluation intégrée du risque de
tsunami sur le littoral atlantique Marocain, focalisée sur la ville d’El Jadi...