Landslide susceptibility assessment using the bivariate statistical analysis and the index of entropy in the Sibiciu Basin (Romania) |
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| Authors: | Mihaela Constantin Martin Bednarik Marta C Jurchescu Marius Vlaicu |
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| Institution: | (1) Institute of Geography, Romanian Academy, Str. D. Racovita 12, 023993 Bucharest 20, Romania;(2) Department of Engineering Geology, Comenius University, Mlynska dolina G-127, 84215 Bratislava, Slovak Republic |
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| Abstract: | The Sibiciu Basin is located in Romania between the Buzău Mountains and the Buzau Subcarpathians (Curvature Carpathians and
Subcarpathians). The geology of the basin consists of Paleogene flysch deposits represented by an alternation of sandstones,
marls, clays and schists and Neogene deposits represented by marls, clays and sands. The area is affected by different types
of landslides (shallow, medium-deep and deep-seated failures). In Romania, in the last decades, direct and indirect methods
have been applied for landslide susceptibility assessment. The most utilized before 2000 were based on qualitative approaches.
This study evaluates the landslide susceptibility in the Sibiciu Basin using a bivariate statistical analysis and an index
of entropy. A landslide inventory map was prepared, and a susceptibility estimate was assessed based on the following parameters
which influence the landslide occurrence: slope angle, slope aspect, curvature, lithology and land use. The landslide susceptibility
map was divided into five classes showing very low to very high landslide susceptibility areas. |
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