Derived data product DEA Intertidal Extents
Define a fluctuating world
Understanding the boundaries of the ‘intertidal zone’ — the strip of coastal land revealed and concealed daily by ocean tides — has long been a challenge. Digital Earth Australia (DEA) Intertidal Extents gives definition to complex and ephemeral landscapes
Intertidal zones include critical habitats such as mudflats, seagrass beds, sandy beaches and rocky shores. They’re a literal pool of nutrient-rich organisms and critical bird and sea life
The dataset provides information on the lowest (LOT) and highest (HOT) observed tides for a chosen geographic cell, revealing the satellite-observed tidal range (HOT-LOT) for any given location
Why map intertidal extents?
Imagery for impact Welcome to the intertidal zone
Anyone who has peered into tidal pools or chased crabs on tidal flats knows the intertidal zone represents a rich ecosystem. Now, thanks to three decades of Landsat data, DEA researchers have mapped the intertidal zone map for the entire Australian coast
‘Extracting the intertidal extent and topography of the Australian coastline from a 28 year time series of Landsat observations’
The “Z” of where land meets sea
The Digital Earth Australia team have created the first 3D model of Australia’s entire coastline
Our suite of coastal products
DEA Coastlines, DEA Intertidal Extents, DEA Intertidal Elevations, and DEA High and Low Tide imagery provide new perspectives on critical coastal environments.