Articles | Volume 5, issue 2
Research article
13 Apr 2017
Research article |  | 13 Apr 2017

Validation of digital elevation models (DEMs) and comparison of geomorphic metrics on the southern Central Andean Plateau

Benjamin Purinton and Bodo Bookhagen

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Cited articles

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Albani, M., Klinkenberg, B., Andison, D. W., and Kimmins, J. P.: The choice of window size in approximating topographic surfaces from Digital Elevation Models, Int. J. Geogr. Inf. Sci., 18, 577–593, 2004.
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Arrell, K., Wise, S., Wood, J., and Donoghue, D.: Spectral filtering as a method of visualising and removing striped artefacts in digital elevation data, Earth Surf. Proc. Land., 33, 943–961, 2008.
Athmania, D. and Achour, H.: External Validation of the ASTER GDEM2, GMTED2010 and CGIAR-CSI- SRTM v4.1 Free Access Digital Elevation Models (DEMs) in Tunisia and Algeria, Remote Sensing, 6, 4600–4620, 2014.
Short summary
We evaluate the 12 m TanDEM-X DEM for geomorphometry and compare elevation accuracy (using over 300 000 dGPS measurements) and geomorphic metrics (e.g., slope and curvature) to other modern satellite-derived DEMs. The optically generated 5 m ALOS World 3D is less useful due to high-frequency noise. Despite improvements in radar-derived satellite DEMs, which are useful for elevation differencing and catchment analysis, lidar data are still necessary for fine-scale analysis of hillslope processes.