South Asia Earthquake and Tsunami 南亞地震與海嘯 (26 December 2004)

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Uploaded by on Nov 17, 2011

South Asia Earthquake and Tsunami 南亞地震與海嘯 (26 December 2004)
Rapid Response to Global Environment and Disaster Events

Formosat-2 image (c) 2011 National Space Organization, Taiwan.
Formosat-2 image processing: Global Earth Observation and Data Analysis

Center (GEODAC), Tainan, Taiwan ROC
geodac.rsh.ncku.edu.tw
+886-6-2366740
ccliu88@mail.ncku.edu.tw

2004年12月26日上午印尼蘇門答臘外海發生芮氏地震儀九級以上的強烈地震,觸發了嚴重的海嘯,數小時內便侵襲了環印度洋許多國家,總計造成了55個國家,超過30萬­人不幸喪生的慘劇。國家太空中心於地震發生後第二天便開始連續取像,成功大學團隊對福衛二號於災區所拍攝的遙測影像立刻加以分析。由於災後天氣不佳,原始影像如使用一般線­性增揚方式(如左圖),無法獲取有用資訊,成大團隊應用自適化拉伸法進行增揚處理後,各重要災害區域清晰可見(如右圖),再與Google Earth所提供之災前影像(如左圖)進行比對,可以進行災害調查與評估。此項研究成果可參見文獻
Liu, C.-C.*, J.-G. Liu, C.-W. Lin, A.-M. Wu, S.-H Liu and C.-L. Shieh, (2007) Image Processing of FORMOSAT-2 data for Monitoring South Asia tsunami. International Journal of Remote Sensing. 28(13), pp. 3093-3111. (doi:10.1080/01431160601094518 )

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