Boiling Water in the Strait of Gibraltar

直布罗陀海峡的沸水

• 批准号: NE/D007968/1
• 负责人: Vasyl Vlasenko
• 金额: $ 5.87万
• 依托单位: Plymouth University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FD007968%2F1
• 关键词: Boiling; Water; Strait; Gibraltar

The Strait of Gibraltar has great impact on the environment of the Mediterranean Sea and Atlantic Ocean. It also makes an important contribution to the formation of the global oceanic circulation supplying nutrient-rich salty waters from the Mediterranean Sea to the Atlantic Ocean. A strong tidal forcing is superimposed on the mean current and plays a fundamental role in the dynamics of the Strait. The present study will examine the role of high baroclinic modes in baroclinic tidal dynamics of the Strait of Gibraltar. Contradictory results obtained recently by different researchers in their attempts to describe the effect of 'boiling water' give rise to a hard debate over the interpretation of observational data. This debate was a strong motivation for the present study. The proposal is aimed to fill the gap in understanding of physical processes of generation of strongly-nonlinear baroclinic tides through the application of advanced numerical baroclinic tidal model to the Strait of Gibraltar, for which unique observational data were collected by the University of Cadiz (Spain). The achievement of the basic goal will lead to an understanding of the energy cascading from the barotropic tidal flux to internal waves, and further transformation to shorter solitary waves and turbulence in the conditions of extremely strong baroclinic tidal activity when observed amplitudes of internal waves reach record value of one hundred metres.

直布罗陀海峡对地中海和大西洋的环境影响很大。它还对全球海洋环流的形成作出了重要贡献，从地中海向大西洋供应营养丰富的咸水沃茨。一个强大的潮汐强迫叠加在平均电流，并在海峡的动力学中起着重要的作用。本研究将审查高斜压模态在直布罗陀海峡斜压潮汐动力学中的作用。最近不同的研究人员在试图描述“沸水”效应时获得了相互矛盾的结果，这引起了对观测数据解释的激烈争论。这一辩论是本研究报告的一个强烈动机。该提案的目的是通过对加迪斯大学（西班牙）收集的独特观测数据，将先进的斜压潮汐数值模型应用于直布罗陀海峡，填补在理解强非线性斜压潮汐产生的物理过程方面的差距。基本目标的实现将导致理解从正压潮汐通量到内波的能量级联，以及当观测到的内波振幅达到100米的记录值时，在极强斜压潮汐活动的条件下进一步转化为较短的孤立波和湍流。