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A Possible Submarine Landslide and Associated Tsunami at the Northwest Nile Delta, Mediterranean Sea

机译：地中海西北尼罗河三角洲可能发生的海底滑坡和相关海啸

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摘要

A hypothetical landslide tsunami at the Nile Delta in the Eastern Mediterranean Sea is modeled in order to study hazards it would pose to the region. The methodology used is based on numerical simulation of the generation and propagation of a realistic landslide scenario. The volume of the landslide source is 41 km~3 located offshore northern Egypt. The maximum simulated wave heights along the northern, southern, and eastern coasts in the region are in the range of 1-12,1-6.5, and 0.5-3 m, respectively. The maximum tsunami current velocity along the coasts reaches ～ 2-5 m s~(-1). Simulations show that bathymetric features in the region and the coastal morphology focus the maximum tsunami waves into some specific paths along which the largest tsunami runup heights occur. The semi-enclosed nature of the eastern Mediterranean causes wave reflections, which result in several wave trains arriving at every coastal site. In some coastal sites, the largest simulated wave belongs to the second wave train, indicating that wave reflection is responsible for this delayed large wave. Based on the results, deployment of a network of deepwater pressure gauges may help in detection and early warning of possible landslide-generated tsunamis in the Eastern Mediterranean.
机译：为研究东地中海尼罗河三角洲的一个假设性滑坡海啸，以研究其可能对该区域造成的危害。所使用的方法基于真实滑坡情景的产生和传播的数值模拟。位于埃及北部近海的滑坡源体积为41 km〜3。沿该地区北部，南部和东部沿海的最大模拟波高分别在1-12、1-6.5和0.5-3 m范围内。沿海最大海啸流速达到〜2-5 m s〜（-1）。模拟表明，该地区的地形特征和沿海形态将最大的海啸波集中在某些特定的路径上，沿着这些路径会出现最大的海啸上升高度。地中海东部的半封闭性质引起了波浪反射，导致数个波浪列车到达每个沿海站点。在某些沿海地区，最大的模拟波属于第二个波列，表明波反射是造成这种延迟大波的原因。根据结果​​，部署深水压力表网络可能有助于检测和预警东地中海可能发生的由滑坡产生的海啸。

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  • 来源
    《Oceanography》 |2014年第2期|68-75|共8页
  • 作者

    AHMET C. YALCINER; ANDREY ZAYTSEV; BETUL AYTORE; ISIL INSEL; MOHAMMAD HEIDARZADEH; ROZITA KIAN; FUMIHIKO IMAMURA;

  • 作者单位

    Ocean Engineering Research Center, Department of Civil Engineering, Middle East Technical University (METU), Ankara, Turkey;

    Special Research Bureau for Automation of Marine Research, Far Eastern Branch of Russian Academy of Sciences, Uzhno-Sakhalinsk, Russia;

    Ocean Engineering Research Center, Department of Civil Engineering, METU, Ankara, Turkey;

    Ocean Engineering Research Center, Department of Civil Engineering, METU, Ankara, Turkey;

    Earthquake Research Institute, University of Tokyo, Tokyo, Japan;

    Ocean Engineering Research Center, Department of Civil Engineering, METU, Ankara, Turkey;

    International Research Institute of Disaster Science, Tohoku University, Sendai, Japan;

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