We investigate whether an improvement in spatial resolution of DEMs (Digital Elevation Models) always leads to an improvement in the results of geomorphological models. To this end, we selected a state-of-art model for the prediction of soil thickness and we applied it in a test area using input data derived from DEMs with a cell size of 5, 10 and 20 meters. Resulting soil thickness maps were validated and the differences were discussed and put in relation with the different spatial resolutions of the original DEM. We found that in our case a 10m resolution better constrained the morphological characteristics of the study area and provided better results. We conclude that in basin scale geomorphological modeling meso-scale DEMs could be conveniently used to account for the morphologic characteristics of the study area.
Influence of DEM (Digital Elevation Model) Resolution in Geomorphological Modeling / Segoni S.; Moretti S.. - In: PARIPEX INDIAN JOURNAL OF RESEARCH. - ISSN 2250-1991. - STAMPA. - 3(3):(2014), pp. 39-40.
Influence of DEM (Digital Elevation Model) Resolution in Geomorphological Modeling
SEGONI, SAMUELE;MORETTI, SANDRO
2014
Abstract
We investigate whether an improvement in spatial resolution of DEMs (Digital Elevation Models) always leads to an improvement in the results of geomorphological models. To this end, we selected a state-of-art model for the prediction of soil thickness and we applied it in a test area using input data derived from DEMs with a cell size of 5, 10 and 20 meters. Resulting soil thickness maps were validated and the differences were discussed and put in relation with the different spatial resolutions of the original DEM. We found that in our case a 10m resolution better constrained the morphological characteristics of the study area and provided better results. We conclude that in basin scale geomorphological modeling meso-scale DEMs could be conveniently used to account for the morphologic characteristics of the study area.File | Dimensione | Formato | |
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