Although the geologic, topographic, and threshold shaking conditions required to trigger landslides in earthquakes are probabilistically predictable, models used to estimate the behavior of slopes under dynamic shaking conditions are overly simplistic because of the lack of direct measurement of landslide behavior during seismic shaking. Two permanent instrument arrays have been installed on seismically active landslides to simultaneously record acceleration, pore pressure, and permanent landslide displacement, which will permit more accurate modeling of seismic landslide response.

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