LANDSLIDE HAZARD ZONING USING THE GIS APPROACH - A CASE-STUDY FROM THE RAMGANGA CATCHMENT, HIMALAYAS
LANDSLIDE HAZARD ZONING USING THE GIS APPROACH - A CASE-STUDY FROM THE RAMGANGA CATCHMENT, HIMALAYAS
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DOI：
10.1016/0013-7952(90)90037-2
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发表时间：
1990-02-01
影响因子：
7.4
通讯作者：
JOSHI, BC
中科院分区：
文献类型：
--
作者：
GUPTA, RP;JOSHI, BC
本文论述了一种技术的发展，滑坡灾害的风险评估，使用地理信息系统（GIS）的方法。该方法已被应用到Ramganga集水区，位于喜马拉雅山脉的下部，调查是基于多个数据集。滑坡活动与许多参数有关，即，岩性、土地利用、距主要构造剪切带的距离和方位角。基于四个子流域的522个滑坡数据，定义并开发了一个称为“滑坡名义风险因子”（LNRF）的指标值。不同的权重已分配给地形取决于LNRF和集成在一个有序的规模，以帮助定位高，中，低滑坡风险的地区。
This paper deals with the development of a technique for risk assessment of landslide hazards using the Geographic Information System (GIS) approach. The method has been applied to the Ramganga catchment, lying in the Lower Himalayas, and the investigations are based on multi-data sets. The landslide activity is related to a number of parameters, viz., lithology, land-use, distance from major tectonic-shear zone and azimuth direction. Based on the data for 522 landslides in four selected sub-basins, an index value, called “landslide nominal risk factor” (LNRF) is defined and developed for each of the important factors. Different weights have been assigned to the terrain depending upon the LNRF and integrated in an ordinal scale, to help locate areas of high, moderate and low landslide risk.