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Open AccessArticle

Multi-Parameter Relief Map from High-Resolution DEMs: A Case Study of Mudstone Badland

1
Department of Geomatics, National Cheng Kung University, Tainan City 701, Taiwan
2
Department of Geography, National Changhua University of Education, Changhua City 50007, Taiwan
3
Institute of Geography, Heidelberg University, Heidelberg 69047, Germany
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(7), 1109; https://doi.org/10.3390/ijerph16071109
Received: 13 February 2019 / Revised: 24 March 2019 / Accepted: 26 March 2019 / Published: 28 March 2019
(This article belongs to the Special Issue Spatio-Temporal Environmental Monitoring and Social Sensing)
Topographic parameters of high-resolution digital elevation models (DEMs) with meter to sub-meter spatial resolution, such as slope, curvature, openness, and wetness index, show the spatial properties and surface characterizations of terrains. The multi-parameter relief map, including two-parameter (2P) or three-parameter (3P) information, can visualize the topographic slope and terrain concavities and convexities in the hue, saturation, and value (HSV) color system. Various combinations of the topographic parameters can be used in the relief map, for instance, using wetness index for upstream representation. In particular, 3P relief maps are integrated from three critical topographic parameters including wetness or aspect, slope, and openness data. This study offers an effective way to explore the combination of topographic parameters in visualizing terrain features using multi-parameter relief maps in badlands and in showing the effects of smoothing and parameter selection. The multi-parameter relief images of high-resolution DEMs clearly show micro-topographic features, e.g., popcorn-like morphology and rill. View Full-Text
Keywords: multi-parameter relief map; red relief; 3P relief map; DEM; badland multi-parameter relief map; red relief; 3P relief map; DEM; badland
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Chu, H.-J.; Chen, Y.-C.; Ali, M.Z.; Höfle, B. Multi-Parameter Relief Map from High-Resolution DEMs: A Case Study of Mudstone Badland. Int. J. Environ. Res. Public Health 2019, 16, 1109.

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