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Satellite remote sensing currently offers medium-resolution (10 to 15 m) images at high temporal frequency (~5 days between images) and can provide low-cost shoreline data to coastal engineers, managers and scientists. This is often the only source of information on past shoreline changes at locations where no field measurements are available.  

°Õ³ó±ðÌý enables the non-expert user to extract shorelines from Landsat 5, Landsat 7, Landsat 8, Landsat 9 and Sentinel-2 images. The shoreline detection algorithm implemented in CoastSat combines a sub-pixel border segmentation and an image classification component, which refines the segmentation into four distinct categories such that the shoreline detection is specific to the sand/water interface. The horizontal accuracy of the time-series of shoreline position is ~10 m. More details can be found in "".

CoastSat website  

°Õ³ó±ðÌý provides an interactive platform to access satellite-derived shorelines obtained with CoastSat at beaches around the Pacific Rim, including Australia, California, Mexico and Hawaii. 

A couple of examples are shown below for Stockton Beach in NSW and the Tweed River Entrance bypassing system: 

Additional capabilities in our satellite remote sensing unit include: 

• Long-term to seasonal shoreline change assessment with  and links to climate variability (ENSO)

• Shoreline mapping from high-resolution PlanetLab cubesats (3m/pixel with daily revisits globally) to assess the impact of storm events ( by Yarran Doherty)Ìý

• Beach slope mapping ()Ìý

• Monitoring of intermittent open/close estuary entrances (ICOLLS) ( by Tino Heimhuber)Ìý

• Small island planform dynamics ( by Michael Cuttler)Ìý

Visit the CoastSat website at  and explore the coast!