Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 7, issue 3
Articles | Volume 7, issue 3
https://doi.org/10.5194/esurf-7-773-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-7-773-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 3
Research article
 | Highlight paper
 | 
26 Aug 2019
Research article | Highlight paper |  | 26 Aug 2019

A global delta dataset and the environmental variables that predict delta formation on marine coastlines

Rebecca L. Caldwell, Douglas A. Edmonds, Sarah Baumgardner, Chris Paola, Samapriya Roy, and Jaap H. Nienhuis

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Short summary
River deltas are valuable resources that support biodiversity and human habitation. Despite this we do not have a global census of deltas nor do we know the conditions that promote their formation. We surveyed 5399 river mouths greater than 50  m wide and found that 2174 (40  %) create a delta. The conditions that lead to delta formation are high sediment input and low wave and tide conditions. These results can be used to understand how deltas will adapt to environmental changes.
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