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Landslide susceptibility mapping using bivariate statistical method for the hilly township of Mussoorie and its surrounding areas, Uttarakhand Himalaya
Journal of Earth System Science ( IF 1.9 ) Pub Date : 2020-07-29 , DOI: 10.1007/s12040-020-01428-7
Pratap Ram , Vikram Gupta , Meenakshi Devi , Neeraj Vishwakarma

Landslide is a normal geomorphic process that becomes hazardous when interfering with any development activity. It has been noted that ~400 causalities occur in the Himalayan region every year due to this phenomenon. The frequency and magnitude of the landslides increase every year, particularly in the hilly townships. This demands the large scale landslide susceptibility, hazard, risk, and vulnerability assessment of the region to be carried out. In the present study, Mussoorie Township and its surrounding areas located in the Lesser Himalaya has been chosen for Landslide Susceptibility Mapping (LSM) that involved bivariate statistical Yule coefficient (YC) method. It calculates the binary association between landslides and its various possible causative factors like lithology, land use-landcover (LULC), slope, aspect, curvature, elevation, road-cut, drainage, and lineament. The results indicate that ~44% of the study area falls under very high, high and moderate landslide susceptible zones and ~56% in the low and very low landslide susceptible zones. The dominant part of the area falling under high and moderate landslide susceptible zones lies in the area covered by highly fractured Krol limestone exhibiting slope ranging between 65° and 77°. The study would be useful to the planners for the land-use planning of the area.

中文翻译:

使用双变量统计方法对北阿坎德邦喜马拉雅山Mussoorie及其周边地区的滑坡敏感性地图

滑坡是正常的地貌过程,在干扰任何开发活动时会变得危险。已经注意到,由于这种现象,每年在喜马拉雅地区发生约400个因果关系。滑坡的发生频率和强度每年都在增加,特别是在山区小镇。这要求对要进行的区域进行大规模的滑坡敏感性,危害,风险和脆弱性评估。在本研究中,选择了位于小喜马拉雅山的Mussoorie镇及其周边地区进行滑坡敏感性地图(LSM),该地图涉及双变量统计Yule系数(YC) 方法。它计算滑坡及其各种可能的致病因素之间的二元关联,例如岩性,土地利用-土地覆被(LULC),坡度,纵横比,曲率,高程,切路,排水和线条。结果表明,约有44%的研究区域属于高,高和中度滑坡易感区域,而低和非常低的滑坡易感区域则有约56%。属于高和中度滑坡易感区之下的区域的主要部分位于被高度断裂的Krol石灰岩覆盖的区域,其倾斜度在65°至77°之间。该研究对于该地区的土地利用规划的规划者将是有用的。
更新日期:2020-07-29
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