HR: 1340h
AN: S53A-1013    [Abstracts]
TI: Tsunami Hazard Assessment and Inundation Maps for Crescent City
AU: Uslu, B
EM: uslu@usc.edu
AF: Tsunami Research Center Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, Greece
AU: * Borrero, J C
EM: jborrero@usc.edu
AF: Tsunami Research Center Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, Greece
AU: Barberopoulou, A E
EM: costas@usc.edu
AF: Tsunami Research Center Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, Greece
AU: Synolakis, C E
EM: costas@usc.edu
AF: Tsunami Research Center Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, Greece
AB: We model tsunami inundation and runup heights in Crescent City, California triggered by possible earthquakes on the Cascadia Subduction Zone (CSZ). The CSZ is believed capable of producing great earthquakes with magnitudes of Mw 9.0 or greater. We simulate plausible CSZ rupture scenarios and calculate inundation using MOST (Titov and Synolakis, 1998). We benchmark our CSZ inundation projections against mapped flooded areas and tide gauge data from the 1964 tsunami, which destroyed 29 city blocks, and also from the damaging 15 November 2006 Kuril Islands tsunami. Results suggest that inundation from CSZ tsunamis could extend over 3 km inland, twice as far as the limits of the 1964 inundation. Crescent City is most vulnerable to slip on the Gorda segment of the CSZ. Rupture of the northern or Juan De Fuca segment produces lower water heights than the 1964 event. At Crescent City, the tsunami surges a leading elevation wave just after the earthquake. Educational and preparedness for self-evacuation are essential to save lives. Titov V.V. and Synolakis, C.E., 1998, Numerical modeling of Tidal Wave Runup, J. Waterway, Port, Coast. Eng., vol 124 (4) 157-171.
UR: http://www.usc.edu/dept/tsunamis
DE: 0560 Numerical solutions (4255)
DE: 3238 Prediction (3245, 4263)
DE: 4564 Tsunamis and storm surges
DE: 6324 Legislation and regulations (6615)
DE: 8170 Subduction zone processes (1031, 3060, 3613, 8413)
SC: Seismology [S]
MN: 2007 Fall Meeting