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Landslide Susceptibility Assessment of Mauritius Island (Indian Ocean)

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SGI Studio Galli Ingegneria S.r.l., Via della Provvidenza 15, 35030 Sarmeola di Rubano (PD), Italy
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Department of Engineering and Geology, Università degli Studi “G. d’Annunzio” Chieti-Pescara, Viale Pindaro 42, 65127 Pescara, Italy
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Author to whom correspondence should be addressed.
Geosciences 2019, 9(12), 493; https://doi.org/10.3390/geosciences9120493
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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MDPI and ACS Style

Marsala, V.; Galli, A.; Paglia, G.; Miccadei, E. Landslide Susceptibility Assessment of Mauritius Island (Indian Ocean). Geosciences 2019, 9, 493.

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