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http://dx.doi.org/10.11108/kagis.2018.21.1.106

Comparison of Geomorphological Parameters Derived from Different Digital Elevation Model Resolutions in Chuncheon, South Korea  

LEE, Jun-Gu (Dept. of Civil Engineering, Pukyong National University)
SUH, Young-Cheol (Dept. of Civil Engineering, Pukyong National University)
LEE, Dong-Ha (Dept. of Civil Engineering, Kangwon National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.21, no.1, 2018 , pp. 106-114 More about this Journal
Abstract
DEM(Digital Elevation Model) are now easily produced with advancing remote sensing technology. Depending on desired task, UAV can produce high resolution DEM. But high resolution comes with issues of data storage and processing time and cost. To check the effect of DEM resolution, this study compares six geomorphological parameters derived from different resolution DEM in a test area around Chuncheon, Korea. The comparison analysis was based on statistics of each derivatives of slope, curvature, flow direction, flow accumulation, flow length and basin. As a result, it was found that DEM remained unchanged and so did the flow accumulation area. However, slope, curvature, flow length and basin numbers were decreased with the normalization of increasing pixel size. DEM resolution should be carefully selected depending on the precision of application required.
Keywords
Geomorphological parameters; DEM; Comparison; Chuncheon;
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Times Cited By KSCI : 5  (Citation Analysis)
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