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Rapid assessment procedure to demarcate areas susceptible to earthquake-induced ground failures for environment management – a case study from parts of northeast India

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Abstract.

Ground failures, such as landslide and the liquefaction of soil induced by earthquake and/or rainfall, not only pose a threat to human settlements but also degrade the environment. In order to be as prepared as possible, prior knowledge of the spatial distribution of areas vulnerable to these natural hazards and the critical locations for different degrees of risk is required. Information on the land cover, surface drainage, morphology, surface material, rock type, geological structure, lineament, rainfall and earthquake was used in developing a procedure to evaluate regions of potential ground failure. A case study from northeast India is presented to illustrate its value.

Résumé.

Les mouvements de terrain, tels que les glissements, ainsi que la liquéfaction des sols, conséquences de séismes ou de pluies, non seulement constituent des menaces pour l'habitat mais aussi altèrent notre environnement. Par précaution, une connaissance préliminaire de la répartition spatiale des zones susceptibles d'être concernées par ces phénomènes est nécessaire. Des données relatives à l'occupation des sols, au drainage superficiel, à la géomorphologie, aux formations superficielles, aux types de roches et de structures géologiques, aux linéaments, à la répartition des pluies et aux séismes ont été utilisées pour délimiter des régions prédisposées aux mouvements de terrain. Une étude de cas, dans le nord-est de l'Inde, est présentée à titre d'illustration.

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Nagarajan, .R. Rapid assessment procedure to demarcate areas susceptible to earthquake-induced ground failures for environment management – a case study from parts of northeast India. Bull Eng Geol Environ 61, 99–119 (2002). https://doi.org/10.1007/s100640100125

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  • DOI: https://doi.org/10.1007/s100640100125

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