Earthquake and rainfall-induced landslide hazard assessment of Kutupalong Rohingya camp using meteorological and geological information

Kutupalong Rohingya camp is one of the largest humanitarian shelters for conflict-fled people. The area susceptible to landslide hazards because being situated in dynamic tectonic settings and meteorological conditions. Hence, study aims assess earthquake rainfall-induced worst-case scenario. triggering parameters (topographic, soil physical property, contributing factors) are designed identify hazard-prone areas through factor safety computation. topographic prepared by combining field investigation remote sensing-based information. properties modeled two ways account their uncertainties: normal probabilistic distribution interpolation-based spatial distribution. factors (i.e., rainfall) have been assessed using approach. Peak Ground Acceleration (PGA) exceedance 50, 75, 100, 200, 475 years return periods applied calculation earthquake-induced landslides. rainfall intensities 50 75 combined with PGA respective rainfall-triggered landslide-prone areas. has measured following methods: Monte-Carlo simulation direct estimation method. Multiple scenarios (rainfall duration 1, 2, 3 days) also considered estimate these models. findings finally validated against investigation-based inventory more than 85% accuracy at a 90% confidence interval.