Elevation geomorphology slope direction of Heihe river (2013-2016)


Two sets of grid data, aster GDEM data with a resolution of 30 meters and SRTM data with a resolution of 90 meters provided by the data management center of Heihe project, as well as point data from multiple sources, are used. By using the HASM scaling up algorithm, the grid data of different sources and different precision are fused with the elevation point data to obtain the high precision slope direction data of Heihe River Basin. First of all, the accuracy of two groups of grid data is verified by using various point data. According to the results of accuracy verification, different grid data are used as the trend surface of data fusion in different regions. The residuals of various point data and trend surface are calculated, and the residual surface is obtained by interpolation with HASM algorithm, and the trend surface and residual surface are superposed to obtain the final slope surface. The spatial resolution is 500 meters.


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The data is stored in grid TIF format and can be opened and read by remote sensing software such as ArcGIS and QGIS


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YUE Tianxiang, ZHAO Na. Elevation geomorphology slope direction of Heihe river (2013-2016). National Tibetan Plateau Data Center, 2016. (Download the reference: RIS | Bibtex )

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Geographic coverage
East: 101.50 West: 98.00
South: 38.00 North: 42.00
Detail
  • Temporal resolution: Yearly
  • Spatial resolution: 100m - 1km
  • File size: 1 MB
  • Browse count: 934 Times
  • Apply count: 2 Times
  • Share mode: offline
  • Temporal coverage: 2013-01-01 To 2016-08-01
  • Updated time:
Contact Information
: YUE Tianxiang   ZHAO Na  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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