NSFGEO-NERC: Stimulated Loss of Balance

GSTDTAP

项目编号	NE/R006652/1
	NSFGEO-NERC: Stimulated Loss of Balance
	Jacques Vanneste
主持机构	University of Edinburgh
项目开始年	2017
	2017-08-01
项目结束日期	2020-07-31
资助机构	UK-NERC
项目类别	Research Grant
项目经费	212053(GBP)
国家	英国
英文摘要	Recent results obtained by the PIs show that the advection and refraction of near-inertial waves (NIWs) by mesoscale flow is necessarily accompanied by a transfer of energy from the mesoscale to NIWs: the presence of externally forced NIWs stimulates a loss of energy from the geostrophically and hydrostatically balanced component of the flow. This process, stimulated loss of balance (SLOB), should be contrasted with the much more studied and weaker process known as spontaneous loss of balance. The spontaneous version occurs at order one Rossby number and without externally forced waves. But the stimulated version is active even at small Rossby number and hence, we hypothesize, throughout the ocean. The main objectives of this proposal are to assess and develop the hypothesis that SLOB plays a major role in the mesoscale energy budget, and to investigate SLOB by components of the internal wave spectrum other than NIWs, particularly the internal tide (IT). This will be achieved by the development of new, phase-averaged models coupling the dynamics of internal waves with that of the balanced mesoscale flow, and through numerical solution of both these models and of the three-dimensional Boussinesq equations. The outcome will be a quantitative understanding of the role played by SLOB in the ocean energy budget.
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文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/86777
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Jacques Vanneste.NSFGEO-NERC: Stimulated Loss of Balance.2017.