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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Effect of submarine canyons on tsunami heights, currents and run-up off the southeast coast of India
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Effect of submarine canyons on tsunami heights, currents and run-up off the southeast coast of India

机译：海底峡谷对印度东南沿海海啸高度，洋流和径流的影响

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Tsunami numerical model studies are mostly focused on inundation and run-up onto the coast. Fewer studies have been aimed at investigating the role of submarine canyons on tsunami heights, currents and run-up. The tsunami hydrodynamics in the vicinity of submarine canyons and ridges in the Palar-Cauvery region off the southeast coast of India on 26 December 2004 is considered in this study. Numerical modelling was carried out to study tsunami heights and currents in the vicinity of the submarine canyons as well as the variation of tsunami heights at 10 m water depth. Comparisons between the tsunami wave energy density at 10 m depth and the onshore run-up height observations showed good correlation for select locations, with the run-up heights being about 3% of the wave energy density. However, the local topography in the run-up zone also strongly influences the local run-up, which reduces direct correlations between run-up and nearshore tsunami height.
机译：海啸数值模型研究主要集中在淹没和海岸上升。很少有研究旨在调查海底峡谷对海啸高度，洋流和上升的作用。这项研究考虑了2004年12月26日印度东南海岸帕拉-卡弗里地区海底峡谷和海脊附近的海啸水动力。进行了数值模拟，以研究海底峡谷附近的海啸高度和海流，以及在10 m水深处海啸高度的变化。 10 m深度海啸波能量密度与陆上上升高度观测值之间的比较表明，选定位置具有良好的相关性，上升高度约为波浪能密度的3％。但是，暴动区的局部地形也强烈影响了局部暴动，从而降低了暴动与近海海啸高度之间的直接相关性。

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