The data are DEM and orthographic image data along the Nyangqu River of Yarlung Zangbo River. The camera carried by DJI UAV was used to take photos of the sampling section of Nyangqu River according to the set flight path. The overlap of adjacent photos was not less than 70%. The photos were utilized by Agisoft Metashape software to generate orthography image and DEM. Orthography image contains three bands: red, green and blue. The sampling river reaches of Nyangqu River basin contained four locations of main channel and two locations of tributaries. The resolution of the digital elevation model was less than 1.0m and the coordinate system was WGC1984. The data set can provide data support for the accurate simulation of flood disaster in the Nyangqu River, and further serve the prevention and control of flood disaster and risk assessment, which has important scientific and engineering value.

File naming and required software

File naming: location Zip, the zip folder contains: location Jpg is orthophoto and location TIF is DEM and PDF is agisift metashape processing report
Data reading method: JPG in the dataset can be opened with photos, TIF can be opened with ArcGIS, and the elevation data is displayed.

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Cite as:

Ma, X., Huang, E., Yan, X., Luo, M., Wang, L. (2022). Data set of DEM and orthography image on the Nyangqu River in the Yarlung Zangbo River (2021). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Terre.tpdc.272513. CSTR: 18406.11.Terre.tpdc.272513. (Download the reference： RIS | Bibtex )

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

Support Program

Second Tibetan Plateau Scientific Expedition Program

Copyright & License

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License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)