Tsunami geomorphology: Erosion and deposition from the 15 November 2006 Kuril Island tsunami
Tsunami geomorphology: Erosion and deposition from the 15 November 2006 Kuril Island tsunami
复制标题
海啸地貌：2006 年 11 月 15 日千岛岛海啸的侵蚀和沉积
DOI：
10.1130/g30172a.1
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发表时间：
2009
期刊：
影响因子：
5.8
通讯作者：
E. Kravchunovskaya
中科院分区：
文献类型：
--
作者：
B. MacInnes;J. Bourgeois;T. Pinegina;E. Kravchunovskaya
2006 年 11 月 15 日的千岛地震（震级 8.1–8.4）和海啸使我们能够收集海啸前约 3 个月至海啸后 9（和 21）个月期间千岛群岛沿海地貌变化的令人信服的数据集。我们对这些岛屿进行的海啸前和海啸后调查，包括 2006 年测量和 2007 年重新占领的四个地形剖面，使我们有信心将许多变化归因于海啸，尽管中部岛屿没有目击者的描述。海拔较低（15 m）的地区经历了大规模侵蚀，极大地改变了海岸线。海啸沉积物大致与海啸上升和淹没的程度相对应。在所有研究案例中，海啸侵蚀的沉积物数量远远超过陆地上沉积的数量。海啸对千岛群岛的侵蚀主要是因为海岸线的高地势加速了海啸的外流。
The 15 November 2006 Kuril earthquake (Mw 8.1–8.4) and tsunami enabled us to collect a compelling data set of coastal geomorphic change in the Kuril Islands from ~3 months before to 9 (and 21) months after the tsunami. Our pre-tsunami and post-tsunami surveys of the islands, including four topographic profi les measured in 2006 and reoccupied in 2007, allow us the confi dence to attribute many changes to the tsunami, in spite of an absence of eyewitness accounts in the central islands. Areas with low runup, 15 m, underwent massive erosion that dramatically altered the coastline. Tsunami deposits roughly corresponded with the extent of tsunami runup and inundation. The amount of sediment eroded by the tsunami far outweighed the amount deposited on land in all cases studied. The tsunami was dominantly erosive in the Kuril Islands because the high-relief topography of the coastline accelerated tsunami outfl ow.