Intertidal Extents Model
The Intertidal Extents Model (ITEM) product utilises 30 years of Earth observation data from the Landsat archive to map the extents and topography of Australia's intertidal mudflats, beaches and reefs1; the area exposed between high and low tide.
These regions are notoriously difficult to survey and characterise, and the ITEM products provide valuable information on the structure of these environments that can contribute to coastal management, habitat mapping and modelling applications.
- View and access product interpretation tools via NationalMap. Select Add data, and then the Surface Water and Marine/Coastal/Intertidal extent model theme.
- Download the data and product information
1 Sagar, S., Roberts, D., Bala, B., Lymburner, L., 2017. Extracting the intertidal extent and topography of the Australian coastline from a 28 year time series of Landsat observations. Remote Sensing of Environment 195, 153-169. https://doi.org/10.1016/j.rse.2017.04.009