Since its launch in 2021, the Geoscience Australia Digital Earth Australia Coastlines (“DEA Coastlines”) data product has delivered powerful insights into long-term, continental-scale shoreline dynamics. By combining decades of satellite remote sensing data, advanced tide modelling, and sub-pixel shoreline mapping techniques, DEA Coastlines has tracked multi-decadal coastal change at unprecedented spatial detail along the entire Australian coast.
However, as pressures from sea-level rise, climate change, and coastal development accelerate into the 21st century, Australia’s foundational monitoring capabilities must also evolve. New satellite data sources offer the potential to significantly improve both the spatial and temporal resolution of existing workflows. These advances present an exciting opportunity to capture fundamental new data on how Australia’s coastlines respond to complex drivers of change, including climate impacts, sea-level fluctuations, and extreme weather events.
This presentation will provide a retrospective on the impact of DEA Coastlines, and outline a proposed next-generation redevelopment aimed at bridging the gap between historical observations and future coastal adaptation. By actively soliciting feedback from the coastal science community, we aim to ensure the next iteration of DEA Coastlines remains a robust, fit-for-purpose tool for guiding communities and decision-makers through the impacts of a rapidly changing Australian coastline.