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Proceedings Paper

Characteristics of tsunami inundation area in the eastern part of Sri Lanka due to the 2004 Sumatra earthquake observed in high-resolution satellite images
Author(s): Hiroyuki Miura; Saburoh Midorikawa
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Paper Abstract

It is important for efficient post disaster management to develop a methodology to identify affected areas from remote sensing data. Inundation of the tsunami generated by the 2004 Sumatra earthquake caused severe damage in coastal areas in Sri Lanka, located 1,500km away from the epicenter. As the preliminary stage for extraction of the tsunami inundation areas from high-resolution satellite images, the characteristics of the pre- and post-event images in Batticaloa city, the eastern part of Sri Lanka, are examined. Normalized difference vegetation index (NDVI) calculated from the images is utilized since the densities of the vegetations in the affected area are decreased due to the tsunami inundation. The distribution of the difference of NDVI between pre- and post-event images is compared with the actual inundation area observed in the field survey. The result shows that the difference in the inundation areas shows larger than that in the non-inundation areas. The areas that NDVI is remarkably decreased after the event are extracted as the inundated areas. The distribution of the extracted areas correlates with the actual inundation area.

Paper Details

Date Published: 12 December 2006
PDF: 9 pages
Proc. SPIE 6412, Disaster Forewarning Diagnostic Methods and Management, 641216 (12 December 2006); doi: 10.1117/12.694188
Show Author Affiliations
Hiroyuki Miura, Tokyo Institute of Technology (Japan)
Saburoh Midorikawa, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 6412:
Disaster Forewarning Diagnostic Methods and Management
Felix Kogan; Shahid Habib; V. S. Hegde; Masashi Matsuoka, Editor(s)

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