气候变化领域集成服务门户(CCPortal): Assessing the Influence of Shoreline Adaptation on Tidal Hydrodynamics: The Role of Shoreline Typologies

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DOI	10.1029/2020JC016705
	Assessing the Influence of Shoreline Adaptation on Tidal Hydrodynamics: The Role of Shoreline Typologies
	Hummel M.A.; Stacey M.T.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	In coastal embayments, tidal dynamics are influenced by mean sea level and shoreline configuration. As sea levels rise and coastal communities modify their shorelines to mitigate future flooding, spatial patterns of inundation, tidal amplitude, and tidal phase will change in response. Here we apply a hydrodynamic model to systematically investigate the effect of local-scale, spatially refined shoreline protection on regional tidal dynamics and peak water levels in San Francisco Bay, California. We find that individual shoreline protection scenarios produce relatively small changes in tidal amplitudes at 50 and 100 cm of sea-level rise but can result in amplification of the M2 tide by up to 40% at 200 cm of sea-level rise. Protection of shorelines with gradually sloping topography and space for floodwater accommodation generally has the largest influence on tidal response, both locally and regionally. In the northern part of San Francisco Bay, tides down-estuary of protected shorelines move closer to a standing wave, while up-estuary tides become more progressive. In the southern part of the bay, which is already close to a standing wave, effects are more localized and variable. Overall, the tidal response to shoreline protection is a function of both the geographic location within the embayment as well as the geomorphic characteristics of the local landscape that is protected. Understanding the relative influence of local shoreline modifications on tidal dynamics under a range of sea-level rise scenarios is critical to developing effective shoreline adaptation alternatives that maximize flood mitigation. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	estuarine hydrodynamics; numerical modeling; sea-level rise; shoreline modifications; shoreline typologies; tidal dynamics
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186481
作者单位	Department of Civil Engineering, University of Texas at Arlington, Arlington, TX, United States; Department of Civil and Environmental Engineering, University of California, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Hummel M.A.,Stacey M.T.. Assessing the Influence of Shoreline Adaptation on Tidal Hydrodynamics: The Role of Shoreline Typologies[J],2021,126(2).
APA	Hummel M.A.,&Stacey M.T..(2021).Assessing the Influence of Shoreline Adaptation on Tidal Hydrodynamics: The Role of Shoreline Typologies.Journal of Geophysical Research: Oceans,126(2).
MLA	Hummel M.A.,et al."Assessing the Influence of Shoreline Adaptation on Tidal Hydrodynamics: The Role of Shoreline Typologies".Journal of Geophysical Research: Oceans 126.2(2021).