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首页> 外文期刊>Natural hazards and earth system sciences >Developing Tsunami fragility curves using remote sensing and survey data of the 2010 Chilean Tsunami in Dichato
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Developing Tsunami fragility curves using remote sensing and survey data of the 2010 Chilean Tsunami in Dichato

机译：利用遥感和Dichato的2010年智利海啸调查数据开发海啸脆弱性曲线

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摘要

On 27 February 2010, a megathrust earthquake of M w = 8.8 generated a destructive tsunami in Chile. It struck not only Chilean coast but propagated all the way to Japan. After the event occurred, the post-tsunami survey team was assembled, funded by the Japan Science and Technology Agency (JST), to survey the area severely affected by the tsunami. The tsunami damaged and destroyed numerous houses, especially in the town of Dichato. In order to estimate the structural fragility against tsunami hazard in this area, tsunami fragility curves were developed. Surveyed data of inundation depth and visual inspection of satellite images of Dichato were used to classify the damage to housing. A practical method suitable when there are limitations on available data for numerical simulation or damage evaluation from surveys is presented here. This study is the first application of tsunami fragility curves on the South American Pacific coast and it might be of practical use for communities with similar characteristics along the west Pacific coast. The proposed curve suggests that structures in Dichato will be severely damaged - with a 68% probability - already at 2m tsunami inundation depth.
机译：2010年2月27日，Mw = 8.8的特大推力地震在智利产生了破坏性的海啸。它不仅袭击了智利海岸，而且还一直传播到日本。事件发生后，由日本科学技术署（JST）资助的海啸后调查小组成立，以调查受海啸严重影响的地区。海啸破坏并摧毁了许多房屋，尤其是在迪恰托镇。为了估计该地区针对海啸危害的结构脆弱性，绘制了海啸脆弱性曲线。使用淹没深度的调查数据和Dichato卫星图像的目测检查来对房屋损坏进行分类。本文介绍了一种适用的实用方法，该方法适用于在数值模拟或调查评估的可用数据有限的情况下。这项研究是海啸脆弱性曲线在南美太平洋沿岸的首次应用，对于西太平洋沿岸具有类似特征的社区可能具有实际用途。拟议的曲线表明，在200万海啸淹没深度处，狄恰托的建筑物将受到严重破坏（概率为68％）。

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