Articles | Volume 7, issue 3
Earth Surf. Dynam., 7, 773–787, 2019
https://doi.org/10.5194/esurf-7-773-2019
Earth Surf. Dynam., 7, 773–787, 2019
https://doi.org/10.5194/esurf-7-773-2019

Research article 26 Aug 2019

Research article | 26 Aug 2019

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

Rebecca L. Caldwell et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Douglas Edmonds on behalf of the Authors (27 Jun 2019)  Author's response    Manuscript
ED: Publish as is (22 Jul 2019) by Sebastien Castelltort
ED: Publish as is (01 Aug 2019) by Niels Hovius(Editor)
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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.