Tsunami Inundation Mapping for Alaska Communities
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چکیده
Alaska has the greatest tsunami potential in the entire United States. Historic tsunamis generated by earthquakes on the Alaska-Aleutian subduction zone have resulted in widespread damage and loss of life along the Alaskan Pacific coast and other places located at exposed locations around the Pacific Ocean. Large seismic events occurring in the vicinity of the Alaska Peninsula, Aleutian Islands, and Gulf of Alaska have a very high potential for generating both local and Pacific-wide tsunamis. The 1964 Prince William Sound earthquake generated one of the most destructive tsunamis observed in Alaska and the west coast of the US and Canada. In addition to the major tectonic wave, there were about 20 local landslide-generated tsunamis that caused substantial damage in Kodiak, Seward, Valdez and other communities (Figure 1). On November 3, 1994 a landslide-generated tsunami in Skagway Harbor took one life and caused about $21 million of damage. Saving lives and property depends on how well a community is prepared, which makes it essential to estimate the potential flooding area of the coastal zones in case of a local or distant tsunami.
منابع مشابه
Numerical modeling of the 1964 Alaska tsunami in western Passage Canal and Whittier, Alaska
A numerical model of the wave dynamics in Passage Canal, Alaska during the Mw 9.2 megathrust earthquake is presented. During the earthquake, several types of waves were identified at the city of Whittier, located at the head of Passage Canal. The first wave is thought to have been a seiche, while the other two waves were probably triggered by submarine landslides. We model the seiche wave, land...
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