Collaborative Research: The 2015 Taan Fiord landslide tsunami: An interdisciplinary study of cause & effect

合作研究：2015 年塔安峡湾山体滑坡海啸：原因的跨学科研究

• 批准号: 1638898
• 负责人: Daniel Shugar
• 金额: $ 3.47万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-05-15 至 2018-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1638898&HistoricalAwards=false
• 关键词: Collaborative; Research; 2015; Taan; Fiord

As glaciers retreat, the ice pressing up against their valley walls disappears. These rock walls then become unstable and can collapse in catastrophic landslides. In Alaska, where this phenomenon is increasingly common, landslides sometimes fall directly into the ocean and trigger a tsunami. This is what happened in October 2015 in the Taan Fiord: the largest rock avalanche in America in decades plunged 150 million tons of debris into the head of the fiord, producing a wave of water that ran 150m up the opposite bank and scoured the forested flanks of the fiord for at least 12km. The goal of the project is to collect observations of this Taan landslide and tsunami, and to deliver a benchmark dataset to the science and engineering communities so that they can better prepare for future disasters.The project will combine satellite images, field observations and ship-based mapping to constrain the dynamics of the landslide and tsunami, including the mass and velocity of debris when it struck the water, the magnitude of tsunami wave generation and its pattern of motion, and the submarine flow of debris and its deposition. Data collection will take place in the summer of 2016 and will be delivered to the community by the winter.

当冰川撤退时，压在山谷墙壁上的冰消失了。这些岩壁随后变得不稳定，并可能在灾难性的滑坡中倒塌。在阿拉斯加，这种现象越来越普遍，有时滑坡直接落入海洋并触发海啸。这就是2015年10月在Taan Fiord发生的事情：几十年来，美国最大的雪崩雪崩撞到了峡谷的头部，产生了一波水，在对面的银行上跑了1500亿美元，并扫除了森林的侧面。峡湾至少12公里。该项目的目的是收集对这一Taan Landslide和Tsunami的观察，并向科学和工程社区提供基准数据集，以便他们可以更好地为将来的灾难做准备。基于映射以限制滑坡和海啸的动力学，包括碎屑撞击水时的质量和速度，海啸波的产生及其运动模式的大小以及碎屑的海底流动及其沉积。数据收集将于2016年夏季进行，并将在冬季交付给社区。

项目成果

Sedimentology and geomorphology of a large tsunamigenic landslide, Taan Fiord, Alaska

• DOI: 10.1016/j.sedgeo.2017.10.004
• 发表时间: 2017-10
• 期刊: Sedimentary Geology
• 影响因子: 2.8
• 作者: A. Dufresne;M. Geertsema;D. Shugar;M. Koppes;B. Higman;P. Haeussler;C. Stark;J. Venditti;Doug Bonno;C. Larsen;S. Gulick;N. McCall;M. Walton;M. Loso;M. Willis