Estimation of aeolian sediment volume in the middle reaches of the Yarlung Zangbo River based on GPR and LiDAR
- 1School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (jianyu@email.cugb.edu.cn)
- 2School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (rongyiqian@cugb.edu.cn)
- 3School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (3010220029@email.cugb.edu.cn)
- 4School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (2110220045@email.cugb.edu.cn)
- 5School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (2110220065@email.cugb.edu.cn)
- 6School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (htt1280917075@163.com)
- 7School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China (3010230014@email.cugb.edu.cn)
Sand control is one of the most important components of environmental protection. In the middle reaches of the Yarlung Zangbo River, the phenomenon of desertification is becoming serious, which has a great impact on the local ecological environment protection and economic development. The accurate estimation of the volume of aeolian sediment is of great significance to the formulation of the treatment plan. However, most of the existing studies are based on remote sensing interpretation to estimate the area of aeolian sediment, and the research on the volume of aeolian sediment is relatively weak. To make up for this research gap and provide reliable basic information for sand control in the middle reaches of the Yarlung Zangbo River, we carried out research on estimation of aeolian sediment volume based on GPR and LiDAR. The experimental area of this study is located in Zhanang County in the middle reaches of the Yarlung Zangbo River, with an area of approximately 1.8 km2. We set up six GPR survey lines in the experimental area and obtained the bottom interface and corresponding average elevation of aeolian sediment. Subsequently, high-precision surface elevation of the study area was obtained by LiDAR, and the average surface elevation was calculated. Then we obtained the average thickness of the aeolian sediment is 3.25 m by subtraction of the average surface elevation and the elevation of the aeolian sediment bottom interface. Finally, we determined that the volume of aeolian sediment in the experimental area was about 5,850,000 m3. Our study has realized the volume estimation of typical aeolian sediment area in the middle reaches of Yarlung Zangbo River, which has important guiding significance for sand control.
How to cite: Ling, J., Qian, R., Liu, X., Huang, Z., Wang, D., Hu, K., and Zhang, J.: Estimation of aeolian sediment volume in the middle reaches of the Yarlung Zangbo River based on GPR and LiDAR, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-5537, https://doi.org/10.5194/egusphere-egu24-5537, 2024.
