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Title:: Earthquake Disaster Information Extraction Based on Night-time Lighting Images

作者:: 张小咏¹; 朱俊杰²; 许建华³; (1.北京信息科技大学高动态导航技术北京市重点实验室,北京 100101; 2.中国科学院遥感与数字地球研究所,北京 100049; 3.中国地震应急搜救中心,北京 100094)

Author(s):: ZHANG Xiaoyong¹; ZHU Junjie²; XU Jianhua³; (1. Beijing Key Laboratory of High Dynamic Navigation Technology,University of Beijing Information Science and Technology,Beijing 100101,China) (2. Institute of Remote Sensing and Digital Earth,Chinese Academy of Science,Beijing,100094,China)(3. National Earthquake Response Support Service,Beijing 100049,China)

Keywords:: light imagery; significance test of earthquake disaster; significance testing; DMSP/OLS

摘要:: 灯光遥感图像变化是强震后灯光变化的直接表现。基于对地震前后灯光遥感图像特点分析,建立了一种基于灯光破坏的地震灾害信息提取方法,并在2001年印度7.9级地震、2011年“3·11”日本9.0级地震进行了应用分析。结果表明:基于显著性检验的灯光变化检测方法简洁有效,利用灯光遥感数据不仅能够从宏观上获得地震破坏范围及其程度,而且能够直接反映震后受灾人口规模及其空间分布。

Abstract:: The DMSP/OLS night-time lighting imagery is a direct manifestation of the power failure after a strong earthquake. Based on the lighting image feature analysis before and after an earthquake,this paper establishes a simple and practical method to extract the information of earthquake disaster. The method is tested in the 2001 India M7.6 earthquake and the 2011 Japan M9.0 earthquake and gets good results. The results show that the night-time imagery change detection method based on the significance test is simple and effective. The use of the night-time imagery data can not only obtain the extent of earthquake damage from the macro level,but also directly reflect the scale and spatial distribution of the affected population after an earthquake. Therefore,the night-time imagery data can be used as a valuable earthquake disaster to get information sources quickly.