Earth and Planetary Sciences
6 years ago

Coastal barrier system evolution reveals impact of human disturbance on dune formation.

Earth Surface Processes and Landforms
Rapid shoreline progradation followed by vertical foredune building at Pedro Beach, southeastern Australia
Thomas S.N. Oliver, Toru Tamura, Andrew D. Short, Colin D. Woodroffe

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A study at Pedro Beach in Australia used dating techniques and radar technology to study how sand dunes and shorelines have changed over thousands of years. They found that the shoreline straightened and dunes grew taller between 7000 and 3900 years ago. As sediment supply decreased, the rate of shoreline growth slowed. Eventually, the beach stopped growing around 3900 years ago due to lack of space for more sand. More recently, a tall sand dune formed due to human activity, with the most growth happening between 1890 and 1930.