Articles | Volume 10, issue 2
https://doi.org/10.5194/esurf-10-209-2022
https://doi.org/10.5194/esurf-10-209-2022
Research article
 | 
14 Mar 2022
Research article |  | 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)

Liesa Brosens, Benjamin Campforts, Gerard Govers, Emilien Aldana-Jague, Vao Fenotiana Razanamahandry, Tantely Razafimbelo, Tovonarivo Rafolisy, and Liesbet Jacobs

Viewed

Total article views: 3,073 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
2,307 690 76 3,073 89 45 47
  • HTML: 2,307
  • PDF: 690
  • XML: 76
  • Total: 3,073
  • Supplement: 89
  • BibTeX: 45
  • EndNote: 47
Views and downloads (calculated since 24 Aug 2021)
Cumulative views and downloads (calculated since 24 Aug 2021)

Viewed (geographical distribution)

Total article views: 3,073 (including HTML, PDF, and XML) Thereof 2,729 with geography defined and 344 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 13 Dec 2024
Download

The requested paper has a corresponding corrigendum published. Please read the corrigendum first before downloading the article.

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.