The present invention discloses a probabilistic
landslide tsunami
disaster assessment method, device, and medium based on a logic tree, including: obtaining
landslide data corresponding to the area to be detected; constructing a probabilistic
landslide scenario set based on the logic tree method and deriving the geometric parameters of the landslide
scenario; the first-level, second-level, third-level, and fourth-level nodes in the logic tree are landslide location, landslide volume, tsunami arrival point, and tsunami
wave height; obtaining historical landslide tsunami records and
submarine topography data of the area to be detected, and calculating the initial
water level field of the tsunami wave through a first tsunami propagation numerical model according to the landslide location and volume in the probabilistic landslide
scenario set; performing
simulation using a second tsunami propagation numerical model based on the initial
water level field of the tsunami wave to obtain the propagation path, maximum wave amplitude, and influence range of the tsunami; estimating the spatial probability of potential landslides in the area to be detected, the annual
occurrence probability of landslides in each volume interval, and the probability that the maximum wave amplitude of the triggered tsunami does not exceed the tsunami
wave height threshold at the tsunami arrival point.