IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2014  > Vol11 No.3
Volume Estimation of Small Scale Debris Flows Based on Observations of Topographic Changes Using Airborne LiDAR DEMs
Hosung KIM; Seung Woo LEE; Chan-Young YUNE; Gihong KIM
Corresponding AuthorGihong KIM
2014-05
Source PublicationJournal of Mountain Science
Volume11Issue:3Pages:578-591
AbstractThis paper describes a geographic information system (GIS)-based method for observing changes in topography caused by the initiation, transport, and deposition of debris flows using high-resolution light detection and ranging (LiDAR) digital elevation models (DEMs) obtained before and after the debris flow events. The paper also describes a method for estimating the volume of debris flows using the differences between the LiDAR DEMs. The relative and absolute positioning accuracies of the LiDAR DEMs were evaluated using a real-time precise global navigation satellite system (GNSS) positioning method. In addition, longitudinal and cross-sectional profiles of the study area were constructed to determine the topographic changes caused by the debris flows. The volume of the debris flows was estimated based on the difference between the LiDAR DEMs. The accuracies of the relative and absolute positioning of the two LiDAR DEMs were determined to be ±10 cm and ±11 cm RMSE, respectively, which demonstrates the efficiency of the method for determining topographic changes at an scale equivalent to that of field investigations. Based on the topographic changes, the volume of the debris flows in the study area was estimated to be 3747 m3, which is comparable with the volume estimated based on the data from field investigations.
KeywordDebris Flow Topographic Change Lidar Dem Volume Estimation Global Navigation Satellite System (Gnss)
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6889
CollectionJournal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.3
Corresponding AuthorGihong KIM
Recommended Citation
GB/T 7714
Hosung KIM,Seung Woo LEE,Chan-Young YUNE,et al. Volume Estimation of Small Scale Debris Flows Based on Observations of Topographic Changes Using Airborne LiDAR DEMs[J]. Journal of Mountain Science,2014,11(3):578-591.
APA Hosung KIM,Seung Woo LEE,Chan-Young YUNE,&Gihong KIM.(2014).Volume Estimation of Small Scale Debris Flows Based on Observations of Topographic Changes Using Airborne LiDAR DEMs.Journal of Mountain Science,11(3),578-591.
MLA Hosung KIM,et al."Volume Estimation of Small Scale Debris Flows Based on Observations of Topographic Changes Using Airborne LiDAR DEMs".Journal of Mountain Science 11.3(2014):578-591.
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