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Post-Wildfire Landslide Hazard Assessment: The Case of The 2017 Montagna Del Morrone Fire (Central Apennines, Italy)

Authors :
Cristiano Carabella
Enrico Miccadei
Giorgio Paglia
Nicola Sciarra
Source :
Geosciences, Vol 9, Iss 4, p 175 (2019)
Publication Year :
2019
Publisher :
MDPI AG, 2019.

Abstract

This work focused on a post-wildfire landslide hazard assessment, applied to the 2017 Montagna del Morrone fire. This wildfire increased the possibility of landslides triggering, as confirmed by the occurrence of a debris flow, triggered by an intense, short duration rainfall event in August 2018. The study area was investigated through a detailed analysis incorporating morphometric analysis of the topography and hydrography and geomorphological field mapping, followed by the landslide hazard assessment. In detail, the analysis was performed following a heuristic or expert-based approach, integrated using GIS technology. This approach led to the identification of five instability factors. These factors were analyzed for the construction of thematic maps. Hence, each factor was evaluated by assigning appropriate expert-based ranks and weights and combined in a geomorphology-based matrix, that defines four landslide hazard classes (low, moderate, high, and very high). Moreover, the morphometric analysis allowed us to recognize basins prone to debris flows, which, in relevant literature, are those that show a Melton ratio of >0.6 and a watershed length of

Details

Language :
English
ISSN :
20763263
Volume :
9
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Geosciences
Publication Type :
Academic Journal
Accession number :
edsdoj.2d8126a2de644249dac999e70ec3c7e
Document Type :
article
Full Text :
https://doi.org/10.3390/geosciences9040175