气候变化领域集成服务门户(CCPortal): Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current

CCPortal

DOI	10.1029/2019JC015533
	Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current
	Hiron L.; de la Cruz B.J.; Shay L.K.
发表日期	2020
ISSN	21699275
卷号	125 期号:4
英文摘要	During the 2010 Deepwater Horizon oil spill, an underestimated part of the oil was entrained into an intensified Loop Current Frontal Eddy (LCFE). These eddies, which are also known to play an essential role in the Loop Current eddy (LCE) shedding, are difficult to predict, and the dynamics involving their intensification are still not fully understood. The Loop Current (LC) and its strongest LCFEs were continuously tracked during 2009–2011 using sea surface height (SSH) from AVISO+. A mooring array provided complementary information about the internal structure of the LC-LCFE interaction. The intensification of the tracked LCFEs presented similar characteristics, independent of their location: a steep increase in kinetic energy, a corresponding negative increase in SSH, and an increase in its area. As the LCFE grows, the flow at the interface with the LC becomes stronger and deeper and the horizontal density gradient between the features increases. The intensification of the front and the LCFEs is driven by the advection (nonlinear) term and the gradient pressure (linear) term in the momentum budget. Evidence of an inverse energy cascade suggests that LCFEs are extracting energy and mass from the submesoscale field to the zone of contact between the LC and the LCFE, strengthening the front and allowing the LCFEs to grow during periods of intensification. Understanding the physics driving the LCFE intensification is a key step to improve LC forecast models and to better predict LCE shedding events, as well as oil and particle transport around the LC. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	eddy intensification; Loop Current; Loop Current eddy shedding; Loop Current Frontal Eddy; oceanic fronts; oil transport forecast
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/186922
作者单位	Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
推荐引用方式 GB/T 7714	Hiron L.,de la Cruz B.J.,Shay L.K.. Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current[J],2020,125(4).
APA	Hiron L.,de la Cruz B.J.,&Shay L.K..(2020).Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current.Journal of Geophysical Research: Oceans,125(4).
MLA	Hiron L.,et al."Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current".Journal of Geophysical Research: Oceans 125.4(2020).