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Open AccessArticle

Landslide Susceptibility Assessment of Mauritius Island (Indian Ocean)

SGI Studio Galli Ingegneria S.r.l., Via della Provvidenza 15, 35030 Sarmeola di Rubano (PD), Italy
Department of Engineering and Geology, Università degli Studi “G. d’Annunzio” Chieti-Pescara, Viale Pindaro 42, 65127 Pescara, Italy
Author to whom correspondence should be addressed.
Geosciences 2019, 9(12), 493;
Received: 31 October 2019 / Revised: 16 November 2019 / Accepted: 20 November 2019 / Published: 23 November 2019
This work is focused on the landslide susceptibility assessment, applied to Mauritius Island. The study area is a volcanic island located in the western part of the Indian Ocean and it is characterized by a plateau-like morphology interrupted by three rugged mountain areas. The island is severely affected by geo-hydrological hazards, generally triggered by tropical storms and cyclones. The landslide susceptibility analysis was performed through an integrated approach based on morphometric analysis and preliminary Geographical Information System (GIS)-based techniques, supported by photogeological analysis and geomorphological field mapping. The analysis was completed following a mixed heuristic and statistical approach, integrated using GIS technology. This approach led to the identification of eight landslide controlling factors. Hence, each factor was evaluated by assigning appropriate expert-based weights and analyzed for the construction of thematic maps. Finally, all the collected data were mapped through a cartographic overlay process in order to realize a new zonation of landslide susceptibility. The resulting map was grouped into four landslide susceptibility classes: low, medium, high, and very high. This work provides a scientific basis that could be effectively applied in other tropical areas showing similar climatic and geomorphological features, in order to develop sustainable territorial planning, emergency management, and loss-reduction measures. View Full-Text
Keywords: landslide susceptibility; GIS mapping; photogeology; geomorphological field mapping; Mauritius Island landslide susceptibility; GIS mapping; photogeology; geomorphological field mapping; Mauritius Island
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Marsala, V.; Galli, A.; Paglia, G.; Miccadei, E. Landslide Susceptibility Assessment of Mauritius Island (Indian Ocean). Geosciences 2019, 9, 493.

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