Relation of landslides triggered by the Kiholo Bay earthquake to modeled ground motion

摘要: Abstract The 2006 Kiholo Bay, Hawaii, earthquake triggered high concentrations of rock falls and slides in the steep canyons Kohala Mountains along north coast Hawaii. Within these mountains a complex distribution landslides was by shaking. In parts area, were preferentially located on east‐facing slopes, whereas other no systematic pattern prevailed with respect to slope aspect or vertical position slopes. geology within is homogeneous, so we hypothesize that variable landslide result localized variation ground shaking; therefore, used state‐of‐the‐art, high‐resolution ground‐motion simulation model see if it could reproduce landslide‐distribution patterns. We 3D finite‐element analysis shaking using 10 m digital elevation slip finite‐fault constructed from teleseismic records mainshock. Ground velocity time histories calculated up frequency 5 Hz. Dynamic shear strain also compared distribution. Results mixed for simulations, some areas showing correlation locations peak modeled motions but many such correlation. much improved comparison dynamic strain. This suggests (1) rock are possibly higher (velocities) than those our (2) the needs more refinement, (3) dynamic may be fundamental measurement decoupling process materials during seismic