Tsunami Heights along the Pacific Coast of Northern Honshu Recorded from the 2011 Tohoku and Previous Great Earthquakes
Tsunami Heights along the Pacific Coast of Northern Honshu Recorded from the 2011 Tohoku and Previous Great Earthquakes
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2011 年东北地区和历次大地震记录的本州北部太平洋沿岸海啸高地
DOI：
10.1007/s00024-014-0779-x
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and S. Kusumoto
中科院分区：
文献类型：
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作者：
Tsuji;Y.;K. Satake;T. Ishibe;T. Harada;A. Nishiyama;and S. Kusumoto
2011年东北地震引发了一场巨大的破坏性海啸，沿着本州北方记录的海岸高度高达40米。三陆海岸在1896年和1933年的三陆地震中也经历了类似的海啸和破坏，而茨木和千叶海岸在上个世纪唯一的破坏性海啸来自1960年和2010年的智利地震。我们总结了12个实地调查，其中记录了2011年海啸的高度为296个点，沿着，并描述了调查方法，可靠性和准确性。然后，我们将其与上述海啸地点进行了比较，这些地点的具体测量结果在以前的报告中给出。在三陆海岸，2011年的海啸高度与以前的三陆海啸呈正相关，这表明不规则海岸线造成的局部变化比地震位置，类型或近场海啸的震级更占主导地位。与智利海啸高度的相关性不太显着，由于本地和跨太平洋海啸之间的差异。在茨木和千叶海岸，2011年东北和智利的两个海啸高度呈正相关，显示出总体上向南下降，局部变化很小，例如半岛附近的高度很大。
The 2011 Tohoku earthquake generated a huge, destructive tsunami with coastal heights of up to 40 m recorded along northern Honshu. The Sanriku coast experienced similar tsunamis and damage from the 1896 and 1933 Sanriku earthquakes, whereas the only damaging tsunamis on both the Ibaraki and Chiba coasts in the previous century were from the 1960 and 2010 Chile earthquakes. We summarized 12 field surveys in which the height of the 2011 tsunami was recorded at 296 points, along with descriptions of the survey method, reliability, and accuracy. We then compared them with the above-mentioned tsunamis at locations for which specific measurements were given in previous reports. On the Sanriku coast, the 2011 tsunami heights are positively correlated with the previous Sanriku tsunamis, indicating that local variations resulting from the irregular coastline were more dominant factors than the earthquake location, type, or magnitude for near-field tsunamis. The correlations with the Chilean tsunami heights are less significant due to the differences between the local and trans-Pacific tsunamis. On the Ibaraki and Chiba coasts, the 2011 Tohoku and the two Chilean tsunami heights are positively correlated, showing the general decrease toward the south with small local variations such as large heights near peninsulas.