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Earth Surface Dynamics An interactive open-access journal of the European Geosciences Union
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Volume 2, issue 2
Earth Surf. Dynam., 2, 433–441, 2014
https://doi.org/10.5194/esurf-2-433-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Advances in geomorphometry: new technologies, data and software...

Earth Surf. Dynam., 2, 433–441, 2014
https://doi.org/10.5194/esurf-2-433-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Aug 2014

Research article | 19 Aug 2014

Transitional relation exploration for typical loess geomorphologic types based on slope spectrum characteristics

S. Zhao1 and W. Cheng2 S. Zhao and W. Cheng
  • 1Department of Surveying and Mapping, College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China
  • 2State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Abstract. Based on the Chinese Geomorphologic Database at 1 : 1 000 000 scales, the distribution of the typical loess geomorphologic types (such as the loess tableland, loess ridge and loess knoll) is acquired in the Loess Plateau of China. Then, based on the SRTM (Shuttle Radar Topography Mission) digital elevation model (DEM) data and topographic analysis methods, the slope spectrums are computed for the typical loess geomorphologic types and their subtypes. Through achieving the tendency line of the slope spectrum and analysing the slope spectrum characteristics of the loess typical geomorphologic types, the transitional relationships are explored: (1) the general rule is that loess tableland transitions to loess ridge, and then to loess knoll. (2) The specific relationships for the subtypes are as follows: in loess tableland, the transition is from loess terrace to complete tableland, then to residual tableland, and finally to beam tableland. In the loess ridge, the transition is from oblique ridge to knoll ridge, and the final stage is the loess knoll.

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