RT Journal Article
T1 Shoreline Change from Optical and Sar Satellite Imagery at Macro-Tidal Estuarine, Cliffed Open-Coast and Gravel Pocket-Beach Environments
A1 Paz-Delgado, Maria Victoria
A1 Payo, Andrés
A1 Gómez-Pazo, Alejandro
A1 Beck, Anne-Laure
A1 Savastano, Salvatore
K1 Erosión
AB Coasts are continually changing and remote sensing from satellite has the potential to both map and monitor coastal change at multiple scales. This study aims to assess the application of shorelines extracted from Multi-Spectral Imagery (MSI) and Synthetic Aperture Radar (SAR) from publicly available satellite imagery to map and capture sub-annual to inter-annual shoreline variability. This is assessed at three macro-tidal study sites along the coastline of England, United Kingdom (UK): estuarine, soft cliff environment, and gravel pocket-beach. We have assessed the accuracy of MSI-derived lines against ground truth datum tideline data and found that the satellite derived lines have the tendency to be lower (seaward) on the Digital Elevation Model than the datum-tideline. We have also compared the metric of change derived from SAR lines differentiating between ascending and descending orbits. The spatial and temporal characteristics extracted from SAR lines via Principal Component Analysis suggested that beach rotation is captured within the SAR dataset for descending orbits but not for the ascending ones in our study area. The present study contributes to our understanding of a poorly known aspect of using coastlines derived from publicly available MSI and SAR satellite missions. It outlines a quantitative approach to assess their mapping accuracy with a new non-foreshore method. This allows the assessment of variability on the metrics of change using the Open Digital Shoreline Analysis System (ODSAS) method and to extract complex spatial and temporal information using Principal Component Analysis (PCA) that is transferable to coastline evolution assessments worldwide.
PB IOAP-MPDI
YR 2022
FD 2022-04-20
LK https://hdl.handle.net/10630/24340
UL https://hdl.handle.net/10630/24340
LA eng
NO Paz-Delgado MV, Payo A, Gómez-Pazo A, Beck A-L, Savastano S. Shoreline Change from Optical and Sar Satellite Imagery at Macro-Tidal Estuarine, Cliffed Open-Coast and Gravel Pocket-Beach Environments. Journal of Marine Science and Engineering. 2022; 10(5):561. https://doi.org/10.3390/jmse10050561
NO Partial funding for open access charge: Universidad de Málaga. This work was financially supported by the Coastal Erosion FromSpace project which wasfunded via the Science for Society allocation of the 5th Earth Observation Envelope Programme (EOEP5) of the European Space Agency. M.V.P.-D. stay at the BGS was funded by the International Campusof Excellence in Marine Science (CEIMAR) and co-funded by the UE Erasmus+ Program. AGP wasin receipt of an FPU predoctoral contract from the Spanish Ministry of Education and Innovation(reference FPU16/03050) and their stay at the BGS was funded by “Ayudas Complementarias deMovilidad para beneficiarios FPU” from the Spanish Ministry of Education (reference EST19/00682).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026