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Abstract
Photogrammetry Digital Data Processing of Tsau-Lin Earthquake Big Landslide in Taiwan
Track: EMS, Fire, Disaster Management
Author(s): Hsin Hsing Cheng
After the serious 921-Tsau-Lin earthquake in Taiwan in 1999, it's necessary and urgent to know the landslide situation and to handle effectively the silted earth mass on its upper and lower stream channels. This digital data shows urgent concern about the engineering field for hazard prevention and proceeding. To integrate the aerial photogrammetry, RS, GIS, and image processing software, we complete the data acquisition and processing rapidly. By creating the 10m-by-10m resolution DTM of the site before and after the earthquake and overlaping coverages we have finished, we can get the reliable volume of landslide, modeling 3D image, drown range delineation, overtopping height calculation, and storage water volume, etc. The purpose of this article is to introduce the results and some important procedures to show how we utilized the scientific technique of aerial photogrammetry, image processing, and a geographic information system, etc. Finally, we made a real and complete record about the important digital information of the Tsau-Lin landslide.
Hsin Hsing Cheng
Water Conservancy Agency Ministry of Economic Affairs
no.501,li-ming rd. sec.2 taichung. taiwan
taichung. taiwan, taiwan 406
taiwan
Phone: 8864-2501217
Fax: 8864-2523223
E-mail: chh@wca.gov.tw