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首页> 外文期刊>Natural hazards and earth system sciences >Developing fragility functions for the areas affected by the 2009 Samoa earthquake and tsunami
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Developing fragility functions for the areas affected by the 2009 Samoa earthquake and tsunami

机译：在受2009年萨摩亚地震和海啸影响的地区开发脆弱性功能

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摘要

Fragility functions in terms of flow depth, flow velocity and hydrodynamic force are developed to evaluate structural vulnerability in the areas affected by the 2009 Samoa earthquake and tsunami. First, numerical simulations of tsunami propagation and inundation are conducted to reproduce the features of tsunami inundation. To validate the results, flow depths measured in field surveys and waveforms measured by Deep-ocean Assessment and Reporting of Tsunamis (DART) gauges are utilized. Next, building damage is investigated by visually interpreting changes between pre- and post-tsunami high-resolution satellite images. Finally, the data related to tsunami features and building damage are integrated using Geographic Information System (GIS), and tsunami fragility functions are developed based on the statistical analyses. From the developed fragility functions, we quantitatively understood the vulnerability of a coastal region in American Samoa characterized by steep terrains and ria coasts.
机译：开发了针对流动深度，流速和流体动力的脆弱性函数，以评估受2009年萨摩亚地震和海啸影响的地区的结构脆弱性。首先，对海啸传播和淹没进行了数值模拟，以再现海啸淹没的特征。为了验证结果，利用了现场调查中测得的流量深度和海啸深海评估和报告（DART）仪表测得的波形。接下来，通过视觉上解释海啸发生前后高分辨率卫星图像之间的变化来调查建筑物的损坏。最后，使用地理信息系统（GIS）集成了与海啸特征和建筑物破坏有关的数据，并基于统计分析开发了海啸脆弱性函数。从已开发的脆弱性功能中，我们定量地了解了以陡峭地形和里亚海岸为特征的美属萨摩亚沿海地区的脆弱性。

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