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Response of sediment dynamics and morphological evolution to extreme storms in the mudflat of Yellow Sea

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Název: Response of sediment dynamics and morphological evolution to extreme storms in the mudflat of Yellow Sea
Autoři: Xiaofei Ma, Can Wang, Chengyi Zhao, Wei Tang, Jianting Zhu, Gang Yang, Chunhui Li
Zdroj: Journal of Hydrology: Regional Studies, Vol 60, Iss , Pp 102580- (2025)
Informace o vydavateli: Elsevier, 2025.
Rok vydání: 2025
Sbírka: LCC:Physical geography
LCC:Geology
Témata: Sediment dynamics, Hydrodynamic variation, Morphological evolution, Storm event, Physical geography, GB3-5030, Geology, QE1-996.5
Popis: Study region: The Jiangsu coast, located along the Yellow Sea, is significance region on the eastern coast of China. Study focus: Storm events can trigger intense current and wave, leading to significant variations in morphology of mudflat. However, the response of mudflat morphology to storm events has not been fully explored due to limited field observations. Based on Delft3D model, a three-dimensional coupled model of current-wave-sediment-topography was developed to simulate the response of mudflat morphology to storm events and investigate the effect of storms with varying paths and intensities on mudflat evolution. New hydrological insights for the region: Mudflat exhibit interlaced areas of erosion and accretion, with accretion predominantly occurring in supratidal zone and erosion primarily happening in intertidal and subtidal zone. A comparison of mudflat morphology before and after storm reveals that alongshore current is the dominant factor affecting sediment transport. Radial sand ridge has an obstructive effect on the transport of eroded sediments during storms of varying paths and intensities. Transport direction of sediments from the south and north are changed because of barrier effect of radial sand ridge, resulting in spatially asymmetric erosion-accretion pattern. The coupled model developed in this research could offers theoretical foundation for elucidating the response mechanisms of mudflat topography in the context of global changes.
Druh dokumentu: article
Popis souboru: electronic resource
Jazyk: English
ISSN: 2214-5818
Relation: http://www.sciencedirect.com/science/article/pii/S2214581825004057; https://doaj.org/toc/2214-5818
DOI: 10.1016/j.ejrh.2025.102580
Přístupová URL adresa: https://doaj.org/article/2d1592eabed54732ba490488e6ad57ae
Přístupové číslo: edsdoj.2d1592eabed54732ba490488e6ad57ae
Databáze: Directory of Open Access Journals
Popis
Abstrakt:Study region: The Jiangsu coast, located along the Yellow Sea, is significance region on the eastern coast of China. Study focus: Storm events can trigger intense current and wave, leading to significant variations in morphology of mudflat. However, the response of mudflat morphology to storm events has not been fully explored due to limited field observations. Based on Delft3D model, a three-dimensional coupled model of current-wave-sediment-topography was developed to simulate the response of mudflat morphology to storm events and investigate the effect of storms with varying paths and intensities on mudflat evolution. New hydrological insights for the region: Mudflat exhibit interlaced areas of erosion and accretion, with accretion predominantly occurring in supratidal zone and erosion primarily happening in intertidal and subtidal zone. A comparison of mudflat morphology before and after storm reveals that alongshore current is the dominant factor affecting sediment transport. Radial sand ridge has an obstructive effect on the transport of eroded sediments during storms of varying paths and intensities. Transport direction of sediments from the south and north are changed because of barrier effect of radial sand ridge, resulting in spatially asymmetric erosion-accretion pattern. The coupled model developed in this research could offers theoretical foundation for elucidating the response mechanisms of mudflat topography in the context of global changes.
ISSN:22145818
DOI:10.1016/j.ejrh.2025.102580