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Tsunami inundation maps for the city of Sand Point, Alaska


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2017-11-30 15:49:00


Nicolsky, D.J., Suleimani, E.N., and Koehler, R.D., 2017, Tsunami inundation maps for the city of Sand Point, Alaska: Alaska Division of Geological & Geophysical Surveys,


Staff from Alaska Earthquake Center, Geophysical Institute and Alaska Division of Geological & Geophysical Surveys evaluated potential tsunami hazards for the city of Sand Point, on Popof Island in the Shumagin Islands archipelago. We numerically modeled the extent of inundation from tsunami waves generated by local and distant earthquake sources. We considered the results in light of historical observations. The worst-case scenarios are defined by analyzing results of the sensitivity study of the tsunami dynamics with respect to different slip distributions along the Aleutian megathrust. For the Sand Point area, the worst-case scenarios are thought to be thrust earthquakes in the Shumagin Islands region with magnitudes ranging from [...]


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Results presented here are intended to provide guidance to local emergency management agencies in tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards.

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