The Effects of Different Geological Conditions on Landslide-Triggering Rainfall Conditions in South Korea

How landslide-triggering rainfall conditions vary with geology is unclear. The effects of three different geological (gneiss, GN; granite, GR; sedimentary rock, SR) on variations in intensity–duration (I-D) and characteristics responsible for initiating shallow landslides were examined using data from 476 South Korea 1963 to 2018 detailed statistical analyses. Results quantile regression one-way analysis variance analyses clearly showed that impermeable SR slopes result smaller critical than permeable GN GR do, indicating a relatively high occurrence exceedance probability susceptibility slope. These findings suggest conditions, particularly the slopes, should be considered when establishing information-based landslide warning criteria Korea. Our can contribute assessment based conditions; however, they further investigated through situ observations.