Geological and Geomorphological Interaction of the Landslides in the Himalayan Region

The Himalayas are an active geological region characterized by extreme tectonic activity and weather conditions. The region is highly prone to landslides, which pose a serious threat to its ecosystems, and human settlements. Numerous geological and geomorphological factors have an impact on the occurrence of landslides in the Himalayas. Geologically, the presence of certain rock types that are more predisposed to failure, like phyllites and shales are more susceptible to landslides (Gerrard, Geomorphology 10:221–230, 1994). The steep slopes of the Himalayas, resulting from rapid uplift and erosion, further amplify this vulnerability. This is further increased by the Himalayas’ steep slopes, which are the result of rapid uplift and erosion. In addition, snowmelt, earthquakes, and monsoon rains all contribute to the triggering of landslides. The Himalayan landslide problem necessitates a multifaceted solution. To begin with, extensive geological mapping and monitoring of the region are required to identify landslide-prone areas. This can be accomplished through ground-based surveys and also by remote sensing. Geotechnical information is employed in assessing the stability of a slope through the application of Finite Element Modelling (FEM) and kinematic analysis on the slope under consideration, as indicated by Singh and Thakur in (J Earth Syst Sci 128:1–15, 2019) and Tandon et al. in (Landslides 18:849–863, 2021). The chapter is a comprehensive study. This study delves into the comprehensive analysis of geological hazards in the Himalayan region, highlighting the advancements and identifying crucial knowledge gaps. Emphasizing the importance of accurate hazard assessment, it proposes initiatives to bridge the gap between research findings and practical measures for enhanced mitigation.