Optimized river diversion scenarios promote sustainability of urbanized deltas

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dc.creatorMoodie, Andrew J.
dc.creatorNittrouer, Jeffrey A. (TTU)
dc.date.accessioned2022-12-05T21:14:31Z
dc.date.available2022-12-05T21:14:31Z
dc.date.issued2021
dc.description© 2021 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).en_US
dc.description.abstractSocioeconomic viability of fluvial-deltaic systems is limited by natural processes of these dynamic landforms. An especially impactful occurrence is avulsion, whereby channels unpredictably shift course. We construct a numerical model to simulate artificial diversions, which are engineered to prevent channel avulsion, and direct sediment-laden water to the coastline, thus mitigating land loss. We provide a framework that identifies the optimal balance between river diversion cost and civil disruption by flooding. Diversions near the river outlet are not sustainable, because they neither reduce avulsion frequency nor effectively deliver sediment to the coast; alternatively, diversions located halfway to the delta apex maximize landscape stability while minimizing costs. We determine that delta urbanization generates a positive feedback: infrastructure development justifies sustainability and enhanced landform preservation vis-à-vis diversions.en_US
dc.identifier.citationMoodie, A. J., & Nittrouer, J. A. (2021). Optimized river diversion scenarios promote sustainability of urbanized deltas. Proceedings of the National Academy of Sciences, 118(27). https://doi.org/10.1073/pnas.2101649118en_US
dc.identifier.urihttps://doi.org/10.1073/pnas.2101649118
dc.identifier.urihttps://hdl.handle.net/2346/90408
dc.language.isoengen_US
dc.subjectDelta Sustainabilityen_US
dc.subjectRiver Deltasen_US
dc.subjectAvulsionen_US
dc.subjectRiver Diversionen_US
dc.titleOptimized river diversion scenarios promote sustainability of urbanized deltasen_US
dc.typeArticleen_US

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