气候变化领域集成服务门户(CCPortal): Divergence of Sediment Fluxes Triggered by Sea-Level Rise Will Reshape Coastal Bays

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DOI	10.1029/2020GL087862
	Divergence of Sediment Fluxes Triggered by Sea-Level Rise Will Reshape Coastal Bays
	Zhang X.; Leonardi N.; Donatelli C.; Fagherazzi S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	Sediment budget and sediment availability are direct metrics for evaluating the resilience of coastal bays to sea-level rise (SLR). Here we use a high-resolution numerical model of a tidally dominated marsh-lagoon system to explore feedbacks between SLR and sediment dynamics. SLR augments tidal prism and inundation depth, facilitating sediment deposition on the marsh platform. At the same time, our results indicate that SLR enhances ebb-dominated currents and increases sediment resuspension, reducing the sediment-trapping capacity of tidal flats and bays and leading to a negative sediment budget for the entire system. This bimodal distribution of sediments budget trajectories will have a profound impact on the morphology of coastal bays, increasing the difference in elevation between salt marshes and tidal flats and potentially affecting intertidal ecosystems. Our results also clearly indicate that landforms lower with respect to the tidal frame are more affected by SLR than salt marshes. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Budget control; Sea level; Tides; Wetlands; Bimodal distribution; High-resolution numerical models; Sediment availability; Sediment budgets; Sediment deposition; Sediment dynamic; Sediment re suspensions; Sediment trapping; Sediments; depositional environment; geomorphological response; lagoonal sedimentation; numerical model; saltmarsh; sea level change; sediment analysis; sediment budget; tidal flat
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170166
作者单位	Department of Earth and Environment, Boston University, Boston, MA, United States; Department of Geography and Planning, University of Liverpool, Liverpool, United Kingdom
推荐引用方式 GB/T 7714	Zhang X.,Leonardi N.,Donatelli C.,et al. Divergence of Sediment Fluxes Triggered by Sea-Level Rise Will Reshape Coastal Bays[J],2020,47(13).
APA	Zhang X.,Leonardi N.,Donatelli C.,&Fagherazzi S..(2020).Divergence of Sediment Fluxes Triggered by Sea-Level Rise Will Reshape Coastal Bays.Geophysical Research Letters,47(13).
MLA	Zhang X.,et al."Divergence of Sediment Fluxes Triggered by Sea-Level Rise Will Reshape Coastal Bays".Geophysical Research Letters 47.13(2020).