气候变化领域集成服务门户(CCPortal): Trapped Low Frequency Waves on the Northern Israeli Continental Shelf

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DOI	10.1029/2020JC016400
	Trapped Low Frequency Waves on the Northern Israeli Continental Shelf
	Haim N.; Nauri S.; Zavadsky A.; Kit E.; Toledo Y.
发表日期	2020
ISSN	21699275
卷号	125 期号:10
英文摘要	Time series of sea level measurements from different instruments deployed around the Haifa Bay area are analyzed. All observations indicate the existence of persistent low frequency oscillations with periods corresponding to approximately 1 hour and to approximately 30 minutes. These oscillations are persistent throughout most of the year and reached maximal wave heights of around 30 cm, a comparable value to tidal variations, making these oscillations an important factor in determining the average sea level elevation. The work identifies the phenomenon as resonant trapped waves, which are normal modes of the continental shelf extending from Haifa promontory to Achziv Canyon. Their temporal and spatial characteristics are learned through field measurement data analysis, wavelet analysis, numerical simulations, and exploration of an analytic solution. Finally, possible mechanisms for the generation of these waves are discussed. Such waves, which are commonly not surveyed, can be an important factor affecting coastal dynamics such as breaker line and coast line locations. Furthermore, the resonance behavior found has the capability of increasing the deep-to-shallow amplitudes in up to two orders of magnitude depending on incident angle. Noting that seismic or atmospheric events can agitate oscillation with similar wave periods, the intensification poses a hazard to Haifa Bay and coastal area. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Barotropic model; edge waves; In-situ measurements; Low frequency waves; resonant peaks; Shelf oscillations
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/186618
作者单位	School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel; Coastal and Marine Engineering Research Institute, Haifa, Israel
推荐引用方式 GB/T 7714	Haim N.,Nauri S.,Zavadsky A.,et al. Trapped Low Frequency Waves on the Northern Israeli Continental Shelf[J],2020,125(10).
APA	Haim N.,Nauri S.,Zavadsky A.,Kit E.,&Toledo Y..(2020).Trapped Low Frequency Waves on the Northern Israeli Continental Shelf.Journal of Geophysical Research: Oceans,125(10).
MLA	Haim N.,et al."Trapped Low Frequency Waves on the Northern Israeli Continental Shelf".Journal of Geophysical Research: Oceans 125.10(2020).