NH3.12 | Mechanisms and processes of landslides in seismically active environments
EDI
Mechanisms and processes of landslides in seismically active environments
Convener: Hakan Tanyas | Co-conveners: Kate Allstadt, Tolga Gorum, Xuanmei Fan, Tom Robinson

Landslides and other types of ground failure (e.g., liquefaction and subsidence) are among the most damaging effects triggered by earthquake shaking. Observations from several recent earthquakes have shown that the death toll and destruction following strong earthquakes are not confined to the coseismic phase. Damaging mass movements are also observed in the post-seismic period due to disturbances caused by earthquakes. Overall, cascading earthquake hazards, and specifically landsliding in co- and post-seismic periods, are commonly treated separately, even though an integrated approach to the problem is clearly desirable. The purpose of this session is to provide a forum for discussion among researchers and professionals who study landslides and related hazards caused by seismic activity. It also aims to foster multidisciplinary research and collaboration among experts to better understand and mitigate earthquake-induced landslide hazards and risks in both co-seismic and post-seismic phases. Topics of interest include: (a) case histories of earthquake-triggered landslides analyzed at local or regional scales; (b) case histories of mass movements occurring in post-seismic periods; (c) assessments of landslide and other ground-failure hazards in relation to deterministic earthquake event scenarios or regional probabilistic evaluations; (d) application of numerical techniques to evaluate and portray seismic ground-failure hazards in co- and post-seismic periods; (e) studies regarding physical modeling of the influence of dynamic loading on slope stability and seismically induced landslide displacements; (f) site effects such as amplification and the influence of pre-existing landslide masses; (g) comparisons of regional differences in the factors associated with landslide occurrence; and (h) user requirements regarding hazard assessment and persisting challenges.

Landslides and other types of ground failure (e.g., liquefaction and subsidence) are among the most damaging effects triggered by earthquake shaking. Observations from several recent earthquakes have shown that the death toll and destruction following strong earthquakes are not confined to the coseismic phase. Damaging mass movements are also observed in the post-seismic period due to disturbances caused by earthquakes. Overall, cascading earthquake hazards, and specifically landsliding in co- and post-seismic periods, are commonly treated separately, even though an integrated approach to the problem is clearly desirable. The purpose of this session is to provide a forum for discussion among researchers and professionals who study landslides and related hazards caused by seismic activity. It also aims to foster multidisciplinary research and collaboration among experts to better understand and mitigate earthquake-induced landslide hazards and risks in both co-seismic and post-seismic phases. Topics of interest include: (a) case histories of earthquake-triggered landslides analyzed at local or regional scales; (b) case histories of mass movements occurring in post-seismic periods; (c) assessments of landslide and other ground-failure hazards in relation to deterministic earthquake event scenarios or regional probabilistic evaluations; (d) application of numerical techniques to evaluate and portray seismic ground-failure hazards in co- and post-seismic periods; (e) studies regarding physical modeling of the influence of dynamic loading on slope stability and seismically induced landslide displacements; (f) site effects such as amplification and the influence of pre-existing landslide masses; (g) comparisons of regional differences in the factors associated with landslide occurrence; and (h) user requirements regarding hazard assessment and persisting challenges.