Lac Bam imaged by TerraSAR-X – Classification and Visualisation of Seasonal and Annual Changes

Konferenz: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
29.03.2021 - 01.04.2021 in online

Tagungsband: EUSAR 2021

Seiten: 6Sprache: EnglischTyp: PDF

Klingebiel, Christoph; Schmitt, Andreas (Munich University of Applied Sciences, Geoinformatics Department, Munich, Germany)
Wendleder, Anna; Moser, Linda (German Aerospace Center (DLR), Earth Observation Center (EOC), Oberpfaffenhofen, Weßling, Germany)

Lac Bam is one of the most important water reservoirs and wetlands in the semi-arid Sahel zone of Burkina Faso. The natural lake fills up during the short rainy season and continuously dries out due to the long dry season without any rainfall and the extensive water abstraction by farmers. The present study classifies 119 dual-co-polarised TerraSAR-X stripmap acquisitions collected with the highest possible temporal sampling of eleven days between 2013 and 2018. Seasonal and annual changes are visualised in order to recognize trends. Evidently, the ongoing sedimentation of Lac Bam causes a deterioration of the effects of droughts and floods pointing out the need for a regulation of water exploitation.