The Sediment Budgets Evaluation in a Basin Using LiDAR DTMs

被引：1

作者：

Tseng, Chih-Ming ^{[1
]}

Lin, Ching-Weei ^{[2
]}

Chang, Kuo-Jen ^{[3
]}

机构：

[1] Chang Jung Christian Univ, Dept Land Management & Dev, Tainan, Taiwan

[2] Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan

[3] Natl Taipei Univ Technol, Dept Civil Engn, Taipei 106, Taiwan

来源：

ENGINEERING GEOLOGY FOR SOCIETY AND TERRITORY, VOL 3: RIVER BASINS, RESERVOIR SEDIMENTATION AND WATER RESOURCES | 2015年

关键词：

Lidar; DTM; Landslide; Sediment budget; LANDSLIDE; MORPHOLOGY;

D O I：

10.1007/978-3-319-09054-2_8

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In this study, a basin with an area of 20 km(2) was chosen as the study area to more quantitatively understand the temporal and spatial variation of the rainfall-induced sediment volume changes during a period. The 2 m high-resolution DTMs derived from airborne LiDAR data acquired in 2005 and 2010 were used to characterize sediment yield and sediment transport processes such as debris flows and hyper-concentrated flows in the study area. With an acceptable volumetric estimation error (20 %) due to uncertainty of the topography, comparing the two temporal DTMs reveal that LiDAR is an efficient way to assess sediment volume changes at the basin scale over a 5 year period.

引用

页码：37 / 41

页数：5

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