Context and objectives
BACKGROUND: Macro‐tidal multiple intertidal bars represent an important protection for the subaerial beach from storm erosion by reducing wave energy at the coast. These features are ubiquitous in large tidal environment and could be well‐developed, stretching >5km alongshore.
OVERALL AIM: In the RS4MoDy project, we aim to investigate the dynamics of macro‐tidal barred beach morphology from short (storm‐event) to long‐term (up to 25‐years), and to address the relative roles of meteorological‐marine forcing factors in driving bar behaviour and evolution.
The specific scientific objectives are:
- Realise an inventory of archive of high spatial resolution airborne data available;
- Demonstrate the use of UAV systems for accurate mapping of the intertidal bars before and after a storm event;
- Develop an algorithm for the automated extraction of beach morphology based on LiDAR and digicam imagery;
- Analyze and model how the intertidal bars are structured in space and time based on a statistical analysis. This will be done using the historical and more recent acquired high spatial resolution airborne dataset;
- Develop a conceptual model of barred beach morphodynamics incorporating external forcing factors.
Expected scientific results
The overall anticipated outcome of the project will be thematic maps of the bar morphology, changes and sediment budget for pre and post‐storm, and also yearly scale. A methodology of automatic extraction of bar based on DTM data with morphometric and volumetric indicators will be developed. Finally, a model including morphodynamics and forcing factors will be developed.
Expected products and services
Generated bar morphology and sediment budgets data and findings of the RS4MoDy project will be made available to the local community and general public through the VLIZ web platform, university websites. A guideline of UAV survey acquisition in macro‐tidal barred beach with methodology of automatic extraction of bars will be reported and disseminated to coastal managers.
Potential users of the RS4MoDy products are project’s stakeholders, remote sensing community, coastal agencies and policymakers.