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UAV Remote Sensing Hazard Assessment in Zhouqu Debris Flow Disaster

机译：舟曲泥石流灾害中的无人机遥感危险性评估

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On August 8, 2010 morning, a large debris flow occurred in Zhouqu County, Gannan Tibetan Autonomous Prefecture, Gansu Province, China, which has damaged Zhouqu County and its surrounding area seriously. An UAV and airplane were sent there the day after to acquire images of disaster area; UAV image of 0.2 meter resolution and aerial remote sensing image of 1 meter resolution were acquired. NDRCC compared pre-disaster and post-disaster remote sensing images of disaster area, preliminary analyzed and judged the damage condition and disaster trend. We partitioned the coverage and affected area of debris flow into 2457 girds in high resolution remote sensing images, hazard assessment expert group were sent to implement field investigation according to each grid. The disaster scope and extent of loss were defined again combined with field investigation data. Then we assessed the physical quantity of housing, infrastructure, land resource in detail and assessed the direct economic losses. It is for the first time that remote sensing images are integrated into the national catastrophe assessment flow of China as a major data source.
机译：2010年8月8日上午，中国甘肃省甘南藏族自治州舟曲县发生了大块泥石流，严重破坏了舟曲县及其周边地区。次日，一架无人机和飞机被送到那里，以获取灾区的图像。采集了0.2米分辨率的无人机图像和1米分辨率的航空遥感图像。 NDRCC比较了灾区的灾前和灾后遥感影像，初步分析并判断了灾情和灾情趋势。我们在高分辨率遥感影像中将泥石流的覆盖范围和受影响的区域划分为2457个网格，并派遣了危害评估专家组，根据每个网格对它们进行实地调查。结合野外调查数据，再次确定了灾害范围和损失程度。然后，我们详细评估了房屋，基础设施，土地资源的实际数量，并评估了直接经济损失。遥感图像首次作为主要数据源被纳入中国的国家巨灾评估流程。

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