Observing and Predicting Coastal Erosion at the Langue de Barbarie Sand Spit around Saint Louis (Senegal, West Africa) through Satellite-Derived Digital Elevation Model and Shoreline
Abstract
:1. Introduction
2. Materials
2.1. Study Site: Saint Louis (Senegal)
2.2. Satellite Images
2.2.1. On-Demand Very High Resolution Pleiades Images
2.2.2. Regular-Revisit Long Term Landsat and Sentinel-2 Images
3. Methods
3.1. Pleiades-Derived Topography
3.2. Multi-Sensor Shorelines
4. Results
4.1. Comparison with Ground Truth
4.2. Erosion within the Urban Area
4.3. Sand Spit Extension
5. Discussion
5.1. Satellite-Based Coastal Monitoring for Coastal Engineering: Potential Strengths
5.2. The Langue de Barbarie Sand Spit Stochastic Cyclic Evolution: Predicting Next Breaching and Erosion in Saint Louis
5.3. Limitations
5.4. The Impact of Satellite Acquisition Geometry on DEM Accuracy
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
DEM | Digital Elevation Model |
RTK | Real Time Kinematic |
ASP | Ames Setero Pipelines |
RPC | Rational Polynomial Coefficient |
NDWI | Normalized Difference Water Index |
RMSE | Root Mean Squared Error |
LST | Longshore Sediment Transport |
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Transects | RMSE (m) 03/19 | RMSE (m) 03/20 |
---|---|---|
T1 | 1.19 | 0.92 |
T2 | 1.01 | 0.97 |
T3 | 0.72 | 1.07 |
Date | Wind Speed (kt) | Wind Dir (°) | Hs (m) | Wave Dir (°) | T (s) | Tide (m) |
---|---|---|---|---|---|---|
2 March 2019 | 11 | 80 | 2.3 | 290 | 17 | 0.8 |
17 March 2020 | 14 | 360 | 1.8 | 350 | 8 | 0.8 |
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Taveneau, A.; Almar, R.; Bergsma, E.W.J.; Sy, B.A.; Ndour, A.; Sadio, M.; Garlan, T. Observing and Predicting Coastal Erosion at the Langue de Barbarie Sand Spit around Saint Louis (Senegal, West Africa) through Satellite-Derived Digital Elevation Model and Shoreline. Remote Sens. 2021, 13, 2454. https://doi.org/10.3390/rs13132454
Taveneau A, Almar R, Bergsma EWJ, Sy BA, Ndour A, Sadio M, Garlan T. Observing and Predicting Coastal Erosion at the Langue de Barbarie Sand Spit around Saint Louis (Senegal, West Africa) through Satellite-Derived Digital Elevation Model and Shoreline. Remote Sensing. 2021; 13(13):2454. https://doi.org/10.3390/rs13132454
Chicago/Turabian StyleTaveneau, Adélaïde, Rafaël Almar, Erwin W. J. Bergsma, Boubou Aldiouma Sy, Abdoulaye Ndour, Mamadou Sadio, and Thierry Garlan. 2021. "Observing and Predicting Coastal Erosion at the Langue de Barbarie Sand Spit around Saint Louis (Senegal, West Africa) through Satellite-Derived Digital Elevation Model and Shoreline" Remote Sensing 13, no. 13: 2454. https://doi.org/10.3390/rs13132454
APA StyleTaveneau, A., Almar, R., Bergsma, E. W. J., Sy, B. A., Ndour, A., Sadio, M., & Garlan, T. (2021). Observing and Predicting Coastal Erosion at the Langue de Barbarie Sand Spit around Saint Louis (Senegal, West Africa) through Satellite-Derived Digital Elevation Model and Shoreline. Remote Sensing, 13(13), 2454. https://doi.org/10.3390/rs13132454