Australian Coastal Surface Reflectance Composites at High and Low Tide

A 2018 study by Sagar et al. demonstrates a method for generating continental-scale pixel-based surface reflectance composites for dynamic coastal environments. The approach uses a multi-resolution tidal model and a Voronoi mesh to account for tidal influences, producing mosaics of the Australian coastline. The composites are designed for further interpretation and analysis of coastal change.

Use Cases

• Coastal change detection based on tidally constrained composite imagery.
• Monitoring of estuarine environments using pixel composites that account for tidal dynamics.
• Analysis of spatial tidal variation using the Voronoi mesh methodology described.
• Interpretation of coastal landforms from high and low tide continental-scale mosaics.

Strengths

• Method addresses a unique challenge of tidal confounding in composite generation for coastal regions.
• Case studies include continental-scale mosaics of the Australian coastline.
• Approach preserves band relationships within modelled spectra at each pixel.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Generated using a multi-resolution tidal model and Voronoi mesh for compositing satellite imagery.

Freshness

Last updated 2026-04-30 14:11:18.919079; freshness should be verified.

Geography

Australian coastline