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Potential tsunami hazard for the Alaska Peninsula communities of Chignik and Chignik Lagoon is evaluated by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources. Worst-case hypothetical scenarios are defined by analyzing results of a sensitivity study of the tsunami dynamics related to various slip distributions along the Alaska-Aleutian megathrust. The worst-case scenarios for Chignik area communities are thought to be thrust earthquakes along the Alaska Peninsula with their greatest slip at 5-35 km (3.1-22 mi) depth. We also consider Tohoku-type ruptures and an outer-rise rupture along the Alaska Peninsula. The maximum predicted water depth on Anderson Street...


    map background search result map search result map Tsunami inundation maps for the communities of Chignik and Chignik Lagoon, Alaska USGS 1:250000-scale Quadrangle for Chignik, AK 1963 USGS 1:250000-scale Quadrangle for Chignik, AK 1963 USGS 1:250000-scale Quadrangle for Chignik, AK 1963 Tsunami inundation maps for the communities of Chignik and Chignik Lagoon, Alaska USGS 1:250000-scale Quadrangle for Chignik, AK 1963 USGS 1:250000-scale Quadrangle for Chignik, AK 1963 USGS 1:250000-scale Quadrangle for Chignik, AK 1963