A Comparative Study on Landslide Susceptibility Mapping Using AHP and Frequency Ratio Approach Malemnganbi Lourembam Chanu and O. Bakimchandra Abstract Landslide is a naturally occurring phenomenon in most of the moun- tainous regions of the world. Manipur, being a landlocked hilly state, is continuously facing the problems of landslides in the rainy seasons and the economic conditions are highly affected due to blockages of the highways of the region which served as the lifelines. So it becomes very important to check the problems caused due to this natural disaster. In this particular study, an attempt is being made for devel- oping the landslide susceptibility mapping of the region using two GIS-based land- slide susceptibility approaches––Analytic hierarchy approach and Frequency ratio approach. Eight causative factors Land Use Land Cover (LULC), Normalized Differ- ence Vegetation Index (NDVI), slope, aspect, curvature, elevation, rainfall, and soil types are considered in the study. The output landslide susceptibility maps devel- oped by the two different approaches have been compared and validation of both the models have been done using landslide locations of the region. Both the models show good accuracy but the Frequency Ratio shows higher accuracy when compared to the AHP approach. Keywords Landslide · Analytic hierarchy process (AHP) · Frequency ratio · Geographical information system (GIS) · Success rate curve 1 Introduction Landslides are one of the natural phenomena prevalent in the mountainous region of the world. If there is any downward movement caused by the influence of gravity, it is termed a landslide [1]. Landslides are one of the major natural geological hazards prevalent in Manipur, a border state of India. Sometimes landslide is triggered due to M. L. Chanu (B ) · O. Bakimchandra Department of Civil Engineering, National Institute of Technology, Imphal 795004, Manipur, India e-mail: malemnganbilc@gmail.com O. Bakimchandra e-mail: bakim143@gmail.com © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021 T. G. Sitharam et al. (eds.), Local Site Effects and Ground Failures, Lecture Notes in Civil Engineering 117, https://doi.org/10.1007/978-981-15-9984-2_23 267