RT info:eu-repo/semantics/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
A2 Geografia Fisica
K1 Geografía
K1 Erosion
K1 Monitoring
K1 Earth observation
K1 England
K1 PCA
K1 Coastal change
K1 2505.07 Geografía Física
AB Coasts are continually changing and remote sensing from satellite has the potential to both map andmonitor 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 SARlines via Principal Component Analysis suggested that beach rotation is captured within the SARdataset 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 MDPI
LK https://hdl.handle.net/10612/21363
UL https://hdl.handle.net/10612/21363
NO Paz-Delgado, M. V., Payo, A., Gómez-Pazo, A., Beck, A.-L., & Savastano, S. (2022). Shoreline Change from Optical and Sar Satellite Imagery at Macro-Tidal Estuarine, Cliffed Open-Coast and Gravel Pock-ET-Beach Environments. Journal of Marine Science and Engineering, 10(5). https://doi.org/10.3390/JMSE10050561
DS BULERIA. Repositorio Institucional de la Universidad de León
RD Jul 8, 2024