Open AccessLandslide risk assessment: human activities influence on an agriculture catchment
Author(s) -
Hildha Nurmalasari Dewi,
Hatma Suryatmojo,
Ngadisih,
M C Satriagasa
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/361/1/012033
Subject(s) - landslide , drainage basin , analytic hierarchy process , hazard , vulnerability (computing) , natural disaster , risk assessment , land use , hydrology (agriculture) , catchment area , environmental science , geography , water resource management , geology , cartography , geotechnical engineering , computer science , civil engineering , mathematics , engineering , ecology , operations research , computer security , meteorology , biology
A disaster is an event that can cause damage, loss of human life, or environmental damage. One of the disasters that often occurs in the upstream area is landslides. Karangkobar is one of the regions in the upstream area that had experienced a major landslide at 2014 which is resulted in 105 houses buried in land and 95 people were dead. The landslide disaster that has occurred in the Karangkobar catchment area is caused by the topography of the hills, high slopes, thick soil solum, soil texture is clay, cropping pattern and treated land that is inconsistent with conservation rules. This shows that landslide in the Karangkobar catchment area not only caused by natural conditions, but also human activities have an influence on the land. This research aimed to analyze the risk of landslide disaster based on hazard, vulnerability and capacity aspects in the Karangkobar catchment area. Assessment of risk analysis made by overlay between Hazard, Vulnerability, and Capacity is then given scores and weights. Overlay created with Arc Gis 10.4.1, scoring is given to assigning values to each parameter disaster. Weighting was analyzed by Analytical Hierarchy Process (AHP) with pairwise method and Expert Choice V.11 software, Weighting determined based on AHP scale. The result showed that the percentage of landslide risk based on human activity in the Karangkobar catchment are 41,16 % high risk, 38,04 % medium risk, and 14,47% low risk.