Landslide Hazard Analysis by Using Arc GIS and Google Earth: A Case Study of Province 5, Nepal
2019; Volume: 3; Issue: 4 Linguagem: Inglês
10.19080/ttsr.2019.03.555618
ISSN2641-8355
Autores Tópico(s)Flood Risk Assessment and Management
ResumoProvince 5 of Nepal is one of the vulnerable province to natural and human induced disasters like landslides.This research was objectively carried out to estimate the number and area of the landslide and find out the district, municipality and rural municipality wise spatial distribution of landslides in the study area.The visible scars of landslides were digitized using Google earth Pro 7.3.3and further analyzed in Arc GIS 10.3.Altogether, 701 landslides were found in 12 districts with total area coverage of 1940.17 ha.The largest area cover of landslide was found in Dang district with 326.99 ha and the lowest area cover of landslide of 8.63 ha was calculated in Rupandehi district.The highest occurrence 44 landslides occurred in Naubahini Rural Municipality of Pyuthan district followed by Sandhikharka municipality of Arghakhanchi district and Ghorahi sub-metropolitan city of Dang district with 43 and 42 landslides respectively.In Bardiya district, Bardia National park had 57 landslides instances on area of 260.62 ha.The highest area covered by landslides was 191.36 ha in Bijayanagar Rural Municipality of Kapilbastu district, 119.14 ha in Lamahi Municipality of Dang district, 106.66 ha in Sunwal Municipality of Nawalparasi district and 102.9 ha in Putha Uttarganga Rural Municipality of Rukum East district.Overall, this research depicts landslide area of whole province 5 and will be helpful to assist in further decision making.This type of the study can be very useful without much fieldwork and saves huge amount of time and money.
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