Monday, March 6, 2017

Highlights: The Rise and Fall of Tides

Tidal-dominated systems include complex simple and compound dunes, impacted by tidal and non-tidal processes. To better understand a channelized lower intertidal zone, Jo and Choi document an integrated multi-year morphodynamic and hydrodynamic data set from the macrotidal Gyeonggi Bay, Korea. The data provide a means to explore how external processes such as waves, and rain-induced discharge fluctuation shape intertidal compound dunes in time and space, controlling their stratigraphic architecture. The results of the study highlight the complexity of intertidal dune architecture, and provide criteria that could be used to distinguish between intertidal dunes and subtidal dunes in the stratigraphic record.

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