NSF Workshop: Tsunami Deposits and their Role in Hazard Assessment, June 2005

这次讲习班将汇集一批海啸研究方面的国际领导人和新兴领导人。专家们将讨论如何利用海啸造成的海岸侵蚀和沉积模式来更好地了解海啸危害。最近苏门答腊-安达曼地震及其海啸突出了这些议题的重要性。研讨会的预期成果包括建议国家科学基金会对海啸研究的优先事项，初步合作国家科学基金会的建议，并将分发给决策者的结论摘要。知识产权海啸经常发生在世界海洋，在人类和地质的时间尺度。大多数海啸是由海底断层位移引起的;其他海啸则是由海底滑坡、火山爆发或陨石撞击引起的。从地质学家开始利用陆上沉积物来确定海啸危险区域到现在，仅仅过去了20年。这项工作产生了惊人的发现，特别是与美国西北部事件的频率有关的发现。海啸沉积物作为水流深度和速度的记录器具有巨大的潜力--这些参数对海岸工程师来说非常重要。地质学家、沉积物输运专家、海啸数值模拟专家和实验家在这一前沿共同工作。Workhop为这些不同的专家提供了一个及时的场所，以衡量优先事项和计划合作。更广泛的影响应对海啸灾害有三种途径：评估、预警和减灾。海啸沉积物研究是研究复发间隔和估计过去事件规模的重要方法。此外，这些研究有助于公众教育和提高认识-这是减灾工作的一个重要方面，2004年12月26日的海啸表明，全球需要进行海啸灾害评估、教育和社区准备。这次研讨会将把研究人员和教育工作者与政府和社区代表聚集在一起，以改善海啸研究成果向可能受影响的社区的传播。这次研讨会得到了地球科学局以下项目的资助：仪器设备、海洋地质地球物理学、大洋钻探项目、地貌陆地动力学和沉积地质古生物学。在国际科学和工程办公室：东亚太平洋;美洲;中欧欧亚;非洲，近东南亚。在工程局：地质力学和岩土系统。

This workshop will bring together an international group of leaders and emerging leaders in tsunami research. The experts will discuss how coastal erosion and deposition patterns caused by tsunamis can be used to better understand tsunami hazards. The recent Sumatra-Andaman earthquake and its tsunami underscore the importance of these topics. Anticipated outcomes of the workshop include recommendations to NSF on tsunami research priorities, preliminary collaborative NSF proposals, and a summary of conclusions to be distributed to policymakers.Intellectual MeritTsunamis happen often in the world's oceans, on both human and geologic time scales. Most tsunamis result from fault displacement under the sea; others are set off by submarine landslides, volcanic eruptions, or meteorite impacts. Barely two decades have passed since geologists began using onshore sedimentary deposits to identify areas at risk from tsunamis. The work has produced startling discoveries, particularly related to the frequency of events in the northwestern United States.Tsunami deposits have enormous potential as recorders of flow depth and velocity -- parameters of importance to coastal engineers. Working together at this frontier are geologists, sediment-transport experts, numerical tsunami modelers, and experimentalists. The workhop provides a timely venue for these various specialists to weigh priorities and plan collaborations.Broader ImpactsThere are three avenues to addressing tsunami hazard: assessment, warning, and mitigation. Tsunami-deposit studies are an important way to study recurrence intervals and to estimate the size of past events. Moreover, these studies can help with public education and awareness -- an important aspect of mitigation efforts.The 26 December 2004 tsunami demonstrated the global need for tsunamihazard assessment, education, and community preparation. This workshop will bring together researchers and educators with government and community representatives, in order to improve the communication of tsunami research results to potentially affected communities.This workshop is supported by funding from the following programs in the Geosciences Directorate: Instrumentation & Facilities, Marine Geology & Geophysics, Ocean Drilling Program, Geomorphology & Land Dynamics, and Sedimentary Geology & Paleontology. In the Office for International Science and Engineering: East Asia & Pacific; Americas; Central Europe & Eurasia; Africa, Near East & South Asia. In the Engineering Directorate: Geomechanics and Geotechnical Systems.