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Quality Assessment of Digital Elevation Models in a Treeless High-Mountainous Landscape

A Case Study from Mount Aragats, Armenia

Pavol Hnila    Freie Universität Berlin, Deutschland    

Julia Elicker    Albert-Ludwigs-Universität Freiburg, Deutschland    

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abstract

Global Digital Elevation Models (DEMs) are widely employed in geoarchaeology. Usually, their adequacy for particular landscapes is not tested. We assessed 30m-resolution-DEMs (ASTER, SRTM, ALOS, EU-DEM, NASADEM, NEXTMap) with local precision datasets. Our results reveal considerable differences (ASTER unsuitable for the region, NEXTMap and EU-DEM fit most closely to our reference model). This outcome does not necessarily apply to all similar regions. It rather stresses the need for a check of DEMs’ quality in any given study area, and it encourages the use of detailed topographic visualisations of DEMs in absence of suitable reference data.

Subtags: Technology|3d data|Visualisation|Geo-referenced data|Modelling|Communication|Environment|Monuments|Analysis

Published
June 30, 2021
Accepted
May 5, 2021
Submitted
Jan. 15, 2021
Language
EN

Keywords: Landscape archaeologyComparison30m resolution DEMsEvaluationSpatial analysisRMSEGIS

Copyright: © 2021 Pavol Hnila, Julia Elicker. This is an open-access work distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction is permitted, provided that the original author(s) and the copyright owner(s) are credited and that the original publication is cited, in accordance with accepted academic practice. The license allows for commercial use. No use, distribution or reproduction is permitted which does not comply with these terms.