The effect of spatial resolution on landslide mapping - A case study in Chi-Shan river basin, Taiwan

M. F. Lee, S. F. Wang, T. C. Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Landslide is one of the major natural disturbances in Taiwan that restlessly characterizing landscape and persistently disturbs the society. The Chi-Shan River watershed experienced serious landslide damage following the extraordinary heavy rainfall (2748 mm in three days) brought by typhoon Morakot in 2009, and 12 subwatershed of the river was selected to evaluate the distribution of landslides. In this study, we evaluated the effect of pixel size on the accuracy of automatic landslide mapping to find out the optimal accurate and economical spatial resolution to monitor landslide dynamic. Landslide areas were identified through different spatial resolution images from the sensors already in existence (QuickBird, Formosa II and SPOT4) and resampled from Formosa II at 10, 20, 40, 60, 80 and 100m spatial resolution. The results of the analysis were verified using correlation analysis and T-test between Formosa II image and other pixel size. Furthermore, it will be an attempt to determine the optimal resolution for remote sensing based investigation of landslides area assessment in study area.

Original languageEnglish
Title of host publication31st Asian Conference on Remote Sensing 2010, ACRS 2010
Pages611-616
Number of pages6
Volume1
Publication statusPublished - 2010
Event31st Asian Conference on Remote Sensing 2010, ACRS 2010 - Hanoi, Viet Nam
Duration: 2010 Nov 12010 Nov 5

Other

Other31st Asian Conference on Remote Sensing 2010, ACRS 2010
CountryViet Nam
CityHanoi
Period10/11/110/11/5

    Fingerprint

Keywords

  • Landslide mapping
  • Scale
  • Spatial resolution

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Lee, M. F., Wang, S. F., & Lin, T. C. (2010). The effect of spatial resolution on landslide mapping - A case study in Chi-Shan river basin, Taiwan. In 31st Asian Conference on Remote Sensing 2010, ACRS 2010 (Vol. 1, pp. 611-616)