气候变化领域集成服务门户(CCPortal): Effect of Cold Front-Induced Waves Along Wetlands Boundaries

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DOI	10.1029/2020JC016603
	Effect of Cold Front-Induced Waves Along Wetlands Boundaries
	Kim J.-Y.; Kaihatu J.; Chang K.-A.; Sun S.-H.; Huff T.P.; Feagin R.A.
发表日期	2020
ISSN	21699275
卷号	125 期号:12
英文摘要	Along wetland shorelines, the energetic wave environment generated by cold fronts occurs more frequently than for major storms, yet their impact on wetland evolution processes has not been fully identified. To capture the changes in wave climate during the passage of cold fronts, a wave gauge was installed near a salt marsh edge in Galveston Bay, Texas, USA. A coupled wave-hydrodynamic model, validated with the data, was used to assess the dominant processes of cold front induced surge and waves. During the measurement period, wind gusts and abrupt direction shifts during cold fronts produced high-energy wave events that propagated toward the wetland edge. Before a cold front passed our study area, there was an initial increase in the water level inside the bay. As soon as the cold front passed and the wind direction shifted, large waves were created by strong winds. Over the first few hours, the relatively high water level reduced the depth limitations on these waves, allowing them to be quite large. However, as the waves struck the wetland edge at these higher water levels, vegetation intercepted and dampened the erosive force. Over the next few days, the water level dropped well below the mean tide, allowing plunging waves to impinge directly on the edge with a high-energy flux. From the calculated wave power during the entire measurement period, it was found that cold front-induced waves, despite their brief duration, had a high erosive impact on the evolution of the wetland edge. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Cold fronts; Delft3D; Galveston Bay; Salt marsh edge; Wetland erosion; Wind-induced Wave
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/186564
作者单位	Zachry Department of Civil & Environmental Engineering, Texas A&M University, College Station, TX, United States; Department of Ocean Engineering, Texas A&M University, College Station, TX, United States; Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States
推荐引用方式 GB/T 7714	Kim J.-Y.,Kaihatu J.,Chang K.-A.,et al. Effect of Cold Front-Induced Waves Along Wetlands Boundaries[J],2020,125(12).
APA	Kim J.-Y.,Kaihatu J.,Chang K.-A.,Sun S.-H.,Huff T.P.,&Feagin R.A..(2020).Effect of Cold Front-Induced Waves Along Wetlands Boundaries.Journal of Geophysical Research: Oceans,125(12).
MLA	Kim J.-Y.,et al."Effect of Cold Front-Induced Waves Along Wetlands Boundaries".Journal of Geophysical Research: Oceans 125.12(2020).