Volume XLII-3
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3, 885-889, 2018
https://doi.org/10.5194/isprs-archives-XLII-3-885-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3, 885-889, 2018
https://doi.org/10.5194/isprs-archives-XLII-3-885-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  30 Apr 2018

30 Apr 2018

TOPOGRAPHIC FEATURES OF MALYY NARYN RIVER WATERSHED BASED ON DIFFERENT DATA

M. Li1, L. Chen2, Y. Cui1, and M. Zhang1 M. Li et al.
  • 1China University of Mining and Technology, Beijing 100083, China
  • 2National Geomatics Center of China, Beijing 100830, China

Keywords: ZY3 DSM, SRTM DEM, ASTER GDEM, Topographic Features, Slop, HI, River Network Density, River Network Discrepancy

Abstract. This paper researched the influence on the topographical characteristics of watersheds by setting different catchment area thresholds based on different data sets, namely ZY3 DSM, SRTM DEM and ASTER GDEM. Slope, hypsometric integral, river network density and river network discrepancy are analyzed and compared. The results are as follows: a) Three data sets all can express the same rough terrain characteristics and the same degree of watershed topography development; b) ZY3 DSM can reflect terrain information over the Malyy Naryn River watershed in most detail and it has the best expression effect on the terrain among the three data sets of ZY3 DSM, SRTM DEM and ASTER GDEM, followed by SRTM DEM, and the effect of ASTER GDEM is the worst; c) The similarity of river networks extracted by ZY3 DSM and SRTM DEM is the highest, and the similarity between ZY3 DSM and ASTER GDEM is the lowest one.