Possible Mechanisms of Cascading Hillslope Mass Movements Induced by Earthquake and Heavy Rainfall in The Noto Peninsula, Japan
DOI:
https://doi.org/10.64862/Keywords:
Threshold peak ground acceleration, Weathering zone structure, Geo-structural seismic damping, Hazard assessment, Cascading disasterAbstract
This report presents preliminary insights into mechanisms of cascading mass movements induced by the earthquake and subsequent heavy rainfall with special focus on the diversity of phenomena dependent on geological conditions observed during the 2024 Noto Peninsula disaster. The strong seismic shaking altered the structural and physical characteristics of weathered bedrock across different lithologies. This hydrogeological regime shift influenced the behavior of infiltrating rainwater, resulting in a variety of landslides triggered by the subsequent heavy rainfall. Modeling of the subsurface critical zone is key to quantitative landslide hazard assessment.
References
Matsushi, Y. (2025). Preliminary inspection on mechanisms of cascading mass movements induced by earthquake and heavy rainfall: Insights from geological dependence of the phenomena in the Noto Peninsula. Prevention Research Institute Annuals, A68 (in press). (In Japanese with English abstract)
Morikawa, N., and Fujiwara, H. (2013). A new ground motion prediction equation for Japan applicable up to M9 mega-earthquake. Journal of Disaster Research, 8, 878–888. DOI: 10.20965/jdr.2013.p0878
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Copyright (c) 2025 Nepal Society of Engineering Geology (NSEG)
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