Application of GIS and RS for mapping landslides at the watershed level

Jiann-Yeou Rau, Kang Tsung Chang, Chi Chung Lau, Liang Chien Chen, Yi Chen Shao, Jin King Liu

研究成果: Chapter

2 引文 (Scopus)

摘要

Assessment and inventory of natural hazards such as landslides are essential for effective watershed management and sustainable development. In Taiwan, a typhoon (tropical cyclone) or earthquake event can trigger hundreds to thousands of shallow landslides in mountainous areas with steep slopes and rapid streams. Therefore, how to improve the efficiency and accuracy of landslide mapping by means of GIS (geographic information system) and remote sensing techniques is an important research issue. This study proposes a novel, semiautomatic method for mapping and editing landslides at a watershed level. Data sources include airborne laser scanner (ALS) data and color/near infrared ortho-imagery: the ALS data provide topographic features such as elevation, slope, surface roughness, and object height, and the ortho-imagery furnishes the radiometric characteristic of land cover such as greenness index or NDVI (normalized difference vegetation index) for identifying bare grounds. Based on the derived topographic and radiometric parameters, the method first uses a global, automatic algorithm to interpret and delineate landslides. Then it uses a local region growing algorithm and a 3D eraser to edit and compile landslide maps. To explore the causes of mass movement, these landslide maps can also be registered with other geospatial data in a GIS for data visualization and analysis. Experimental results indicate that the method is highly efficient and accurate compared with results of human interpretation from the stereo pairs of aerial photographs. Because Taiwan experiences an average of four or five typhoons every year, this new, semiautomatic method is expected to provide a useful tool for watershed management.

原文English
主出版物標題Terrigenous Mass Movements
主出版物子標題Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology
發行者Springer-Verlag Berlin Heidelberg
頁面171-192
頁數22
9783642254956
ISBN(電子)9783642254956
ISBN(列印)3642254942, 9783642254949
DOIs
出版狀態Published - 2012 十一月 1

指紋

Landslides
Watersheds
Geographic information systems
landslide
watershed
scanner
tropical cyclone event
imagery
laser
earthquake event
Data visualization
Lasers
mass movement
typhoon
natural hazard
geographic information system
surface roughness
aerial photograph
NDVI
visualization

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)
  • Engineering(all)

引用此文

Rau, J-Y., Chang, K. T., Lau, C. C., Chen, L. C., Shao, Y. C., & Liu, J. K. (2012). Application of GIS and RS for mapping landslides at the watershed level. 於 Terrigenous Mass Movements: Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology (卷 9783642254956, 頁 171-192). Springer-Verlag Berlin Heidelberg. https://doi.org/10.1007/978-3-642-25495-6_6
Rau, Jiann-Yeou ; Chang, Kang Tsung ; Lau, Chi Chung ; Chen, Liang Chien ; Shao, Yi Chen ; Liu, Jin King. / Application of GIS and RS for mapping landslides at the watershed level. Terrigenous Mass Movements: Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology. 卷 9783642254956 Springer-Verlag Berlin Heidelberg, 2012. 頁 171-192
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Rau, J-Y, Chang, KT, Lau, CC, Chen, LC, Shao, YC & Liu, JK 2012, Application of GIS and RS for mapping landslides at the watershed level. 於 Terrigenous Mass Movements: Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology. 卷 9783642254956, Springer-Verlag Berlin Heidelberg, 頁 171-192. https://doi.org/10.1007/978-3-642-25495-6_6

Application of GIS and RS for mapping landslides at the watershed level. / Rau, Jiann-Yeou; Chang, Kang Tsung; Lau, Chi Chung; Chen, Liang Chien; Shao, Yi Chen; Liu, Jin King.

Terrigenous Mass Movements: Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology. 卷 9783642254956 Springer-Verlag Berlin Heidelberg, 2012. p. 171-192.

研究成果: Chapter

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AU - Shao, Yi Chen

AU - Liu, Jin King

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Rau J-Y, Chang KT, Lau CC, Chen LC, Shao YC, Liu JK. Application of GIS and RS for mapping landslides at the watershed level. 於 Terrigenous Mass Movements: Detection, Modelling, Early Warning and Mitigation Using Geoinformation Technology. 卷 9783642254956. Springer-Verlag Berlin Heidelberg. 2012. p. 171-192 https://doi.org/10.1007/978-3-642-25495-6_6