PhD Thesis :
Graffin, Marcan. 2025. “Climate Signals in Coastal Morphodynamics Observed from Optical Satellite Imagery.” PhD Thesis, Université de Toulouse. https://theses.hal.science/tel-05582594. (Supervision: Rafael Almar, Erwin W.J. Bergsma)
ARTICLES
- Marcan Graffin, Rafael Almar, Salomé Frugier, Erwin W.J. Bergsma, and Stéphane Bertin. Evaluating shoreline proxies for characterizing intertidal beach morphodynamics at seasonal to interannual timescales. (submitted to JGR Earth Surface)
- Marius Aparicio, Salomé Frugier, Laurent Lacaze, Rafael Almar, Marcan Graffin, and Sylvain Mangiarotti. Sandy beaches’ chaos: shoreline-sandbar coupling inferred from observational time series. Nonlinear Progresses in Geophysics, 33, 197–231, https://doi.org/10.5194/npg-33-197-2026 (2026)
- Salomé Frugier, Rafael Almar, Erwin W.J. Bergsma, Marcan Graffin, and Gerben Ruiessink. Multi-site assessment of wave-dominated active beach state and morpho-sedimentary parameters using optical satellite imagery. Scientific Reports, https://doi.org/10.1038/s41598-026-45638-3 (2026)
- Léna Pitek, Pierre-Étienne Brilouet, Julien Jouanno, and Marcan Graffin. High Spatial and Temporal Resolution Sargassum AFAI coastal dataset for Guadeloupe, Martinique and Yucatan. Remote Sensing, https://doi.org/10.3390/rs18040624 (2026)
- Mohsen Taherkhani, Sean Vitousek, Marcan Graffin, Kilian Vos, Jonathan Allan, George Kaminsky, and Peter Ruggiero. ENSO and PDO drive shoreline position anomalies in the U.S. Pacific Northwest. PNAS Nexus, https://doi.org/10.1093/pnasnexus/pgaf404 (2026)
- Marcan Graffin, Thibault Touzé, Erwin W.J. Bergsma, and Rafael Almar. Towards a global assessment of sandy shorelines: Systematic extraction and validation of optical satellite-derived coastal indicators at various sites. Remote Sensing of Environment 331, 115033, https://doi.org/10.1016/j.rse.2025.115033 (2025)
- Marcan Graffin, Rafael Almar, Erwin W.J. Bergsma, Julien Boucharel, Sean Vitousek, Mohsen Taherkhani and Peter Ruggiero. Waterline responses to climate forcing along the North American West Coast. Communications Earth & Environment 6, 444, https://doi.org/10.1038/s43247-025-02414-x (2025)
- Erwin Bergsma, Adrien Klotz, Stéphanie Artigues, Marcan Graffin, Anna Prenowitz, Jean-Marc Delvit and Rafael Almar. Shoreliner: A Sub-Pixel Coastal Waterline Extraction Pipeline for Multi-Spectral Satellite Optical Imagery. Remote Sensing, https://doi.org/10.3390/rs16152795 (2024)
- Marcan Graffin, Mohsen Taherkhani, Meredith Leung, Sean Vitousek, George Kaminsky and Peter Ruggiero. Monitoring interdecadal coastal change along dissipative beaches via satellite imagery at regional scale. Cambridge Prisms:Coastal Futures, https://doi.org/10.1017/cft.2023.30 (2023)
- Rafael Almar, Julien Boucharel, Marcan Graffin, Gregoire Ondua Abessolo, Gregoire Thoumyre, Fabrice Papa, Rosh Ranasinghe, Jennifer Montaño, Erwin Bergsma, Mohammed Wassim Baba and Fei-Fei Jin. Influence of El Niño on the variability of global shoreline position. Nature Communications 14, 3133, https://doi.org/10.1038/s41467-023-38742-9 (2023)
ORAL COMMUNICATIONS
Marcan Graffin*, Rafael Almar, Erwin Bergsma, Julien Boucharel, Sean Vitousek, Mohsen Taherkhani and Peter Ruggiero. Climate-induced waterline variability along the North American West Coast. Coastal Dynamics 2025, Aveiro, Portugal (Coasts and climate change effects and responses, talk)
Marcan Graffin*, Thibault Touzé, Rafael Almar and Erwin Bergsma. Accuracy of satellite-derived waterline extraction methods on sandy beaches. International Conference of Coastal Engineering 2024, Roma, Italy (Remote Sensing, talk)
Marcan Graffin*, Rafael Almar, Erwin Bergsma, George Kaminsky, Jonathan Allan, Sean Vitousek and Peter Ruggiero. Shoreline evolution patterns across the North American West Coast. Ocean Sciences Meeting 2024, New Orleans, LA, USA (Nearshore Processes, talk)
GRANTS
TESS Mobility 2024 – 2-months stay at Oregon State University for scientific collaboration and article writing. EUR TESS N °ANR-18-EURE-0018 (4500€)
