First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides
We present a novel quantitative test of a 50-year-old hypothesis which asserts that river delta morphology is determined by the balance between river and marine influence. We define three metrics to capture the first-order morphology of deltas (shoreline roughness, number of distributary channel mou...
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| Other Authors: | , , , , , |
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2022
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| Online Access: | https://depot.sorbonne.ae/handle/20.500.12458/1332 |
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| _version_ | 1857415063546101760 |
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| author | Tejedor, Alejandro |
| author2 | Broaddus, C. M Vulis, L. M Nienhuis, J. H Brown, J Foufoula‐Georgiou, E Edmonds, D. A |
| author2_role | author author author author author author |
| author_facet | Tejedor, Alejandro Broaddus, C. M Vulis, L. M Nienhuis, J. H Brown, J Foufoula‐Georgiou, E Edmonds, D. A |
| author_role | author |
| dc.creator.none.fl_str_mv | Tejedor, Alejandro Broaddus, C. M Vulis, L. M Nienhuis, J. H Brown, J Foufoula‐Georgiou, E Edmonds, D. A |
| dc.date.none.fl_str_mv | 2022-11-22T11:42:27Z 2022-11-22T11:42:27Z 2022 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | 10.1029/2022GL100355 0094-8276 1944-8007 https://depot.sorbonne.ae/handle/20.500.12458/1332 10.1029/2022GL100355 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Geophysical Research Letters |
| dc.subject.none.fl_str_mv | environmental forcing shoreline change coastal sedimentology coastal geomorphology river delta |
| dc.title.none.fl_str_mv | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| dc.type.none.fl_str_mv | Controlled Vocabulary for Resource Type Genres::text::periodical::journal::contribution to journal::journal article |
| description | We present a novel quantitative test of a 50-year-old hypothesis which asserts that river delta morphology is determined by the balance between river and marine influence. We define three metrics to capture the first-order morphology of deltas (shoreline roughness, number of distributary channel mouths, and presence/absence of spits), and use a recently developed sediment flux framework to quantify the river-marine influence. Through analysis of simulated and field deltas we quantitatively demonstrate the relationship between sediment flux balance and delta morphology and show that the flux balance accounts for at least 35% of the variance in the number of distributary channel mouths and 42% of the variance in the shoreline roughness for real-world and simulated deltas. We identify a tipping point in the flux balance where wave influence halts distributary channel formation and show how this explains morphological transitions in real world deltas. |
| id | sorbonner_29cb70c0757c0d8946f4c2ca65c71b4b |
| identifier_str_mv | 10.1029/2022GL100355 0094-8276 1944-8007 |
| language_invalid_str_mv | en |
| network_acronym_str | sorbonner |
| network_name_str | Sorbonne University Abu Dhabi repository |
| oai_identifier_str | oai:depot.sorbonne.ae:20.500.12458/1332 |
| publishDate | 2022 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and TidesTejedor, AlejandroBroaddus, C. MVulis, L. MNienhuis, J. HBrown, JFoufoula‐Georgiou, EEdmonds, D. Aenvironmental forcingshoreline changecoastal sedimentologycoastal geomorphologyriverdeltaWe present a novel quantitative test of a 50-year-old hypothesis which asserts that river delta morphology is determined by the balance between river and marine influence. We define three metrics to capture the first-order morphology of deltas (shoreline roughness, number of distributary channel mouths, and presence/absence of spits), and use a recently developed sediment flux framework to quantify the river-marine influence. Through analysis of simulated and field deltas we quantitatively demonstrate the relationship between sediment flux balance and delta morphology and show that the flux balance accounts for at least 35% of the variance in the number of distributary channel mouths and 42% of the variance in the shoreline roughness for real-world and simulated deltas. We identify a tipping point in the flux balance where wave influence halts distributary channel formation and show how this explains morphological transitions in real world deltas.2022-11-22T11:42:27Z2022-11-22T11:42:27Z2022Controlled Vocabulary for Resource Type Genres::text::periodical::journal::contribution to journal::journal articleapplication/pdf10.1029/2022GL1003550094-82761944-8007https://depot.sorbonne.ae/handle/20.500.12458/133210.1029/2022GL100355enGeophysical Research Lettersoai:depot.sorbonne.ae:20.500.12458/13322022-11-24T11:01:57Z |
| spellingShingle | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides Tejedor, Alejandro environmental forcing shoreline change coastal sedimentology coastal geomorphology river delta |
| title | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| title_full | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| title_fullStr | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| title_full_unstemmed | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| title_short | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| title_sort | First‐Order River Delta Morphology Is Explained by the Sediment Flux Balance From Rivers, Waves, and Tides |
| topic | environmental forcing shoreline change coastal sedimentology coastal geomorphology river delta |
| url | https://depot.sorbonne.ae/handle/20.500.12458/1332 |