SGER- Understanding the coastal impacts of Kuril Island 2006 tsunami

翻译后摘要：2004年12月26日大印度洋海啸的成本超过23万人的生命。已经计划在太平洋部署更多的DART，以提供更多的数据和预警能力。 然而，2006年11月15日，美国科学家和紧急救援人员对千岛群岛俯冲带发生的大地震（Mw = 8.3）引发的海啸感到惊讶（Ledford，2006）。 地震引发的海啸预计将在1小时内到达日本北方，在8小时内到达美国西海岸。 由于这次海啸到达日本的波高一般不到1米，预计阿拉斯加或沿着美国西海岸不会发生大海啸。然而，验潮资料显示，俄勒冈州海岸和北方加州的最大波高均大于1 m。加州新月市的总损失预计在50万至100万美元之间。这项研究旨在了解千岛群岛海啸的行为。基于在拟议的研究活动中收集的信息和数据，我们打算找到以下科学问题的答案：1。美国西海岸沿着海啸浪高的原因是什么？ 为什么那里的浪高还是比较大？是因为阿留申群岛（海沟）强烈的波浪反射吗？是由于来自北美海岸的反射还是被困波沿沿着海岸传播（即，边波或干波）？或者是一种局部现象（即，由当地水深测量法主导）？2.在许多地方，最大波高似乎出现在前浪到达后1.5 - 2小时，这是什么原因？ 延迟发生是港湾共振造成的吗？验潮站的位置是否会对潮汐产生重大影响？再一次，它是由当地的水深测量控制的吗？本计画借由研究生与本科生参与跨学科研究，对教学有所贡献。这项研究将揭示阿留申群岛（海沟）和北方大陆架与遥远海啸的相互作用及其对俄勒冈州和加州州海岸海啸高度的影响。这一结果将影响美国西海岸海啸预警的发布和取消。 这项研究还将提供当地水深测量对验潮仪响应的影响的具体信息。 该项目的调查结果将改进和更新为海啸外联和教育方案编写的材料。

Abstract:The 26 December 2004 Great Indian Ocean Tsunami cost the world community more than 230,000 lives. Additional DARTs have been planned and deployed in the Pacific Ocean to provide additional data and warning capabilities. However, on November 15, 2006 scientists and emergency workers in US were surprised by the tsunami generated by a large earthquake (Mw = 8.3) on the Kuril Islands subduction zone (Ledford, 2006). The earthquake generated a tsunami which was expected to reach Northern Japan in one hour and west coast of the United States in about 8 hours. Since the wave heights of this tsunami reaching Japan were, in general, less than 1 m, a large tsunami was not expected in Alaska or along the US west coast. Unfortunately, the tide gage data showed that the highest maximum wave heights on Oregon coast and Northern California were lager than 1m. Total damage in Crescent City, California is expected to be between $500,000 and $1,000,000. This research is aimed at understanding the behavior of the Kuril Islands tsunami. Based on the information and data collected in the proposed research activities, we intend to find the answers to the following scientific questions: 1. What is the cause of large tsunami wave heights along the US west coast? Why the wave heights are still relatively large there? Is it because of the strong wave reflection from the Aleutian Islands (trench)? Is it due to the reflection from the coast of North America or the trapped waves propagating along the coast (i.e., edge wave or stem wave)? Or is it a local phenomena (i.e., dominated by the local bathymetry)? 2. What is the reason that in many locations the maximum wave heights seem to occur 1.5 - 2 hours after the leading wave has arrived? Is the delay in occurrence caused by the harbor resonance? Is it strongly affected by the location of tide gage? Again, is it controlled by the local bathymetry? This project contributes to teaching by involving graduate and undergraduate students in the cross-disciplinary research. The research will shed light on the interactions of the Aleutian Islands (trench) and the continental shelf of Northern America with a distant tsunami and their effects on the tsunami heights along the Oregon and California coasts. The results will affect the protocol for issuing and canceling of tsunami warning for the US west coast. The research will also provide site specific information of the influence of local bathymetry on tide gage responses. Findings from the project will improve and update materials prepared for tsunami outreach and education programs.