Block-based damage assessment of the 2012 Ahar-Varzaghan, Iran, earthquake through SAR remote senisng data
Block-based damage assessment of the 2012 Ahar-Varzaghan, Iran, earthquake through SAR remote senisng data
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DOI：
10.1109/igarss.2017.8127264
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
S. Karimzadeh;S. Samsonov;M. Matsuoka
中科院分区：
文献类型：
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作者：
S. Karimzadeh;S. Samsonov;M. Matsuoka
2012 年 8 月 11 日，伊朗西北部在 11 分钟内发生了两次地震，造成大量人员伤亡和财产损失。来自 RADARSAT-2 数据的宽多视精细模式的四张合成孔径雷达 (SAR) 图像已被考虑用于通过 SAR 干涉测量处理进行快速损伤评估。所有图像均来自上升轨道，空间分辨率为 8 m。第一对（2012.04.13 和 2012.09.08）覆盖了整个研究区域，而第二对（2012.03.13 和 2012.08.28）则部分覆盖了研究区域。由于研究区域包括 38 个农村地点，因此采用了基于街区的建筑损坏评估方法，而不是单个地块评估。相干图的聚合像素方法表明，初始损害评估（和 Kappa 系数）的准确性为 60% (0.51)，可有效地用于适当的灾害管理和任何“先去哪里”操作。
On the 11th of August 2012 two earthquakes within 11 minutes struck NW Iran with considerable fatalities and damages. Four Synthetic Aperture Radar (SAR) images from Wide Multi-look Fine mode of RADARSAT-2 data have been considered for rapid damage assessment through SAR interferometry processing. All images are from ascending orbits with 8 m spatial resolution. The first pair (2012.04.13 and 2012.09.08) covers the whole study area while the second one (2012.03.13 and 2012.08.28) partially encompasses the study area. Since the study area comprises 38 rural sites, the block-based building damage assessment method has been pursued instead of individual parcel assessment. The aggregated pixel method for the coherence map shows that the accuracy of initial damage assessment (and Kappa coefficient) is 60% (0.51) which profitably can be used in proper disaster management and any “where to go first” operation.