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Chapter 9:Hazard Analysis—Tsunamis <br /> ;C 75 N <br /> Station Ovurers <br /> • NDBC DART <br /> Australia <br /> 1-4 <br /> o Chile 4 <br /> • Indonesia r ` ,-- .. T /F140 N <br /> Thailand <br /> a • a •aa + <br /> � i • � �� 46 N <br /> 30 N <br /> R • • i � � ' 15 N <br /> E 457: <br /> - 0 <br /> fyny�9� a <br /> — — `►J� .a f � 30 S <br /> 40 E 80 E 80 E 900E 120 E 140E 980E 980 180 W 140 w 120 w 100 w 80 w 80 w 40 w 20 w 0 POE <br /> Figure 9-14. Locations of DART buoys <br /> 9.5.1.2 Tsunami Inundation Run-up Mapping <br /> A tsunami inundation and run-up analysis of the islands of Oahu and Hawaii was performed <br /> though the University of Hawaii, school of Ocean and Earth Science and Technology using <br /> scenarios from tsunami-genic source regions along the Pacific Rim. The analysis uses 2- <br /> dimensional modeling with updated topographical data utilizing recent LIDAR topographical <br /> surveys that provide a higher resolution of the shallow reef forms below sea level and <br /> shoreline above sea-level than previously available. The 2-D modeling has been validated as <br /> producing good results. The analysis has provided updated inundation zones around the <br /> island. Evacuation maps are soon to be updated based on the results of this analysis. <br /> The inundation and run-up analysis is based on scenarios not on statistical probabilistic <br /> methods. An improved analysis would develop "Maximum credible inundation"maps based <br /> on probabilistic data, although there is currently not sufficient historical tsunami data to <br /> develop such maps. <br /> 9.5.1.3 Perfbrmance Based Tsunami Engineering <br /> An experimental program by the University of Hawaii, Oregon State University and <br /> Princeton University is close to being concluded, having investigated tsunami bore <br /> formation, impact on structures, inundation and scouring. Design provisions for the <br /> structures located in inundation zones are currently being developed using the results of these <br /> studies. It is anticipated that there will be two design methodologies: a prescriptive <br /> methodology with a predefined water height and water velocity to characterize the tsunami <br /> hazard; and a site specific analysis method using calibrated analysis tools to determine the <br /> local tsunami inundation characteristics. <br /> 9-15 Hawaii County Multi-Hazard Mil gal on Plan <br />