Articles | Volume 10, issue 2
https://doi.org/10.5194/esurf-10-209-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-10-209-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Mar 2022
Research article |
| 14 Mar 2022
| 14 Mar 2022
Comparative analysis of the Copernicus, TanDEM-X, and UAV-SfM digital elevation models to estimate lavaka (gully) volumes and mobilization rates in the Lake Alaotra region (Madagascar)
Research Foundation Flanders (FWO), Egmontstraat 5, 1000 Brussels, Belgium
Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
Benjamin Campforts
Institute for Arctic and Alpine Research, University of Colorado at Boulder, Boulder, CO, USA
Gerard Govers
Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
Emilien Aldana-Jague
Earth and Life Institute, Georges Lemaître Centre for Earth and Climate Research, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
Vao Fenotiana Razanamahandry
Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
Tantely Razafimbelo
Laboratoire des Radio Isotopes, Université d'Antananarivo, Antananarivo, Madagascar
Tovonarivo Rafolisy
Laboratoire des Radio Isotopes, Université d'Antananarivo, Antananarivo, Madagascar
Liesbet Jacobs
Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
Ecosystem and Landscape Dynamics, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, the Netherlands
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Cited
13 citations as recorded by crossref.
- Development characteristic of permanent gully morphology at the small watershed scale and its relations with driving factors along the Mollisols Belt of Northeast China X. Lian et al. https://doi.org/10.1016/j.still.2025.106999
- FACA v1 – Fully Automated Co-Alignment of UAV point clouds N. Schüßler et al. https://doi.org/10.5194/gmd-18-5913-2025
- A data driven gully head susceptibility map of Africa at 30 m resolution S. De Geeter et al. https://doi.org/10.1016/j.envres.2023.115573
- Advancing gully topographic threshold analysis using an automated algorithm and high-resolution topography S. Walker et al. https://doi.org/10.1016/j.catena.2024.107897
- Multitemporal Glacier Mass Balance and Area Changes in the Puruogangri Ice Field during 1975–2021 Based on Multisource Satellite Observations S. Ren et al. https://doi.org/10.3390/rs14164078
- Morphological characteristics and volume estimation model of permanent gullies and topographic threshold of gullying in the rolling hilly Mollisols region of northeast China X. Liu et al. https://doi.org/10.1016/j.catena.2023.107323
- Gullying and landscape evolution: Lavaka in Lac Alaotra, Madagascar shed light on rates of change and non-anthropogenic controls R. Cox et al. https://doi.org/10.1126/sciadv.adi0316
- The slow downwearing of Madagascar: Inferring patterns and controls on long‐term basin‐averaged erosion rates from in situ10Be at the catchment and regional level L. Brosens et al. https://doi.org/10.1002/esp.5586
- An Overview of the Importance of DEM Resolution in Soil Erosion Assessment N. Kariminejad et al. https://doi.org/10.1080/23754931.2024.2341165
- Unmanned Aerial Vehicle photogrammetry for mapping hydrologically sensitive and phosphorus critical source areas J. Benavides-Bolaños et al. https://doi.org/10.1016/j.compag.2026.111704
- Retrieving soil moisture in bare and shallow vegetated areas in mountainous region using model based decomposition of Sentinel-1 dual PolSAR data C. Aparna & D. Varade https://doi.org/10.1016/j.asr.2026.07.042
- Historical evolution of gully erosion and its response to land use change during 1968–2018 in the Mollisol region of Northeast China S. Zhang et al. https://doi.org/10.1016/j.iswcr.2023.08.001
- Assessing land elevation in the Ayeyarwady Delta (Myanmar) and its relevance for studying sea level rise and delta flooding K. Seeger et al. https://doi.org/10.5194/hess-27-2257-2023
13 citations as recorded by crossref.
- Development characteristic of permanent gully morphology at the small watershed scale and its relations with driving factors along the Mollisols Belt of Northeast China X. Lian et al. https://doi.org/10.1016/j.still.2025.106999
- FACA v1 – Fully Automated Co-Alignment of UAV point clouds N. Schüßler et al. https://doi.org/10.5194/gmd-18-5913-2025
- A data driven gully head susceptibility map of Africa at 30 m resolution S. De Geeter et al. https://doi.org/10.1016/j.envres.2023.115573
- Advancing gully topographic threshold analysis using an automated algorithm and high-resolution topography S. Walker et al. https://doi.org/10.1016/j.catena.2024.107897
- Multitemporal Glacier Mass Balance and Area Changes in the Puruogangri Ice Field during 1975–2021 Based on Multisource Satellite Observations S. Ren et al. https://doi.org/10.3390/rs14164078
- Morphological characteristics and volume estimation model of permanent gullies and topographic threshold of gullying in the rolling hilly Mollisols region of northeast China X. Liu et al. https://doi.org/10.1016/j.catena.2023.107323
- Gullying and landscape evolution: Lavaka in Lac Alaotra, Madagascar shed light on rates of change and non-anthropogenic controls R. Cox et al. https://doi.org/10.1126/sciadv.adi0316
- The slow downwearing of Madagascar: Inferring patterns and controls on long‐term basin‐averaged erosion rates from in situ10Be at the catchment and regional level L. Brosens et al. https://doi.org/10.1002/esp.5586
- An Overview of the Importance of DEM Resolution in Soil Erosion Assessment N. Kariminejad et al. https://doi.org/10.1080/23754931.2024.2341165
- Unmanned Aerial Vehicle photogrammetry for mapping hydrologically sensitive and phosphorus critical source areas J. Benavides-Bolaños et al. https://doi.org/10.1016/j.compag.2026.111704
- Retrieving soil moisture in bare and shallow vegetated areas in mountainous region using model based decomposition of Sentinel-1 dual PolSAR data C. Aparna & D. Varade https://doi.org/10.1016/j.asr.2026.07.042
- Historical evolution of gully erosion and its response to land use change during 1968–2018 in the Mollisol region of Northeast China S. Zhang et al. https://doi.org/10.1016/j.iswcr.2023.08.001
- Assessing land elevation in the Ayeyarwady Delta (Myanmar) and its relevance for studying sea level rise and delta flooding K. Seeger et al. https://doi.org/10.5194/hess-27-2257-2023
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Short summary
Obtaining accurate information on the volume of geomorphic features typically requires high-resolution topographic data, which are often not available. Here, we show that the globally available 12 m TanDEM-X DEM can be used to accurately estimate gully volumes and establish an area–volume relationship after applying a correction. This allowed us to get a first estimate of the amount of sediment that has been mobilized by large gullies (lavaka) in central Madagascar over the past 70 years.
Obtaining accurate information on the volume of geomorphic features typically requires...
