For the full scientific description of #NIDEM, see our #OpenAccess article in Estuarine, Coastal and Shelf Science!

sciencedirect.com/science/articl…

Terria Map A web map built on Terria Map

You can also explore #NIDEM directly using the amazing new "Stories" functionality on Australia's National Map! @TerriaJS @Data61news

nationalmap.gov.au/#share=s-i60Lo…

And if you want a deeper dive into the science behind #NIDEM, check out the #OpenAccess paper in Estuarine, Coastal and Shelf Science. Any questions. feedback or ideas for future iterations of this work would be greatly appreciated!

sciencedirect.com/science/articl…

For much of Australia, however, #NIDEM represents a first-of-its-kind #elevation data source to support new use cases that require a detailed understanding of the #3D shape of our coastline, such as hydrodynamic modelling, coastal risk management & ecological habitat mapping

#NIDEM doesn't work well everywhere: problems occur where tides are hard to predict (e.g. in complex reefs, estuaries & mangroves), where clouds limit the number of clear #satellite images (e.g. Tas), or where the intertidal zone is narrow and tides are small (e.g NSW, VIC)

We validated our results against #LiDAR 🛩️, #GPS 🌐 and #multibeam 🛥️ data at 14 sites along the Australian coastline, finding that #NIDEM elevations approached the accuracy of LiDAR (e.g. ~ 40 cm RMSE) for modelling the #3D shape of tidal flats and sandy beach and shores: