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Article

Sand Dune Dynamics Exploiting a Fully Automatic Method Using Satellite SAR Data

1
Department of Geosciences and Remote Sensing, Delft University of Technology, 2628 CN Delft, The Netherlands
2
Department of Earth and Environmental Sciences, Division of Geography and Tourism, KU Leuven, B-3001 Leuven, Belgium
3
Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), L-4422 Belvaux, Luxembourg
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(23), 3993; https://doi.org/10.3390/rs12233993
Received: 5 November 2020 / Revised: 29 November 2020 / Accepted: 4 December 2020 / Published: 6 December 2020
(This article belongs to the Special Issue SAR Remote Sensing of Arid Regions)
This work presents an automatic procedure to quantify dune dynamics on isolated barchan dunes exploiting Synthetic Aperture RADAR satellite data. We use C-band datasets, allowing the multi-temporal analysis of dune dynamics in two study areas, one located between the Western Sahara and Mauritania and the second one located in the South Rayan dune field in Egypt. Our method uses an adaptive parametric thresholding algorithm and common geospatial operations. A quantitative dune dynamics analysis is also performed. We have measured dune migration rates of 2–6 m/year in the NNW-SSE direction and 11–20 m/year NNE-SSW for the South Rayan and West-Sahara dune fields, respectively. To validate our results, we have manually tracked several dunes per study area using Google Earth imagery. Results from both automatic and manual approaches are consistent. Finally, we discuss the advantages and limitations of the approach presented. View Full-Text
Keywords: dune dynamics; barchan dunes; dune-field; South Rayan; West Sahara; SAR; adaptive thresholding; automatic method; GIS dune dynamics; barchan dunes; dune-field; South Rayan; West Sahara; SAR; adaptive thresholding; automatic method; GIS
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MDPI and ACS Style

Delgado Blasco, J.M.; Chini, M.; Verstraeten, G.; Hanssen, R.F. Sand Dune Dynamics Exploiting a Fully Automatic Method Using Satellite SAR Data. Remote Sens. 2020, 12, 3993. https://doi.org/10.3390/rs12233993

AMA Style

Delgado Blasco JM, Chini M, Verstraeten G, Hanssen RF. Sand Dune Dynamics Exploiting a Fully Automatic Method Using Satellite SAR Data. Remote Sensing. 2020; 12(23):3993. https://doi.org/10.3390/rs12233993

Chicago/Turabian Style

Delgado Blasco, José Manuel, Marco Chini, Gert Verstraeten, and Ramon F. Hanssen. 2020. "Sand Dune Dynamics Exploiting a Fully Automatic Method Using Satellite SAR Data" Remote Sensing 12, no. 23: 3993. https://doi.org/10.3390/rs12233993

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