Hawaii Ocean Mixing Experiment: Nearfield Program: Abyssal Mixing

夏威夷海洋混合实验：近场计划：深渊混合

• 批准号: 9819531
• 负责人: James Moum
• 金额: $ 66.95万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-12-01 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819531&HistoricalAwards=false
• 关键词: Hawaii; Ocean; Mixing; Experiment; Nearfield

9819531 MoumFunding is provided to conduct a large coordinated experiment (HOME: Hawaiian Ocean Mixing Experiment) near the Hawaiian Ridge to determine whether sites with rough topography are responsible for the mixing of the global ocean. The goals are to identify the major energy pathways for ocean mixing and achieve an approximate energy budget for the region. The Near-field experiment of the HOME project focuses on the investigation of the dynamical processes in the immediate vicinity of the Hawaiian Ridge, and especially the response to barotropic tidal forcing including generation of low- and high-mode internal waves, propagation and turbulent dissipation and mixing. This sub-project will focus on relating the local turbulence and shear across the ridgetop to the temporal variability of the tidally-induced shear and strain determined by the fixed point observations from the research platform FLIP and current meter moorings. A deep towed body (Marlin) and a vertical microstructure profiler (Chameleon) will be deployed during spring and neap tides. Some observations will also be conducted south of the Ridge to depth of 3000 m in order to establish the spatial variability of high dissipation rates observed by other HOME investigators.

9819531 moum提供资金，在夏威夷海脊附近进行大型协调实验（HOME: Hawaiian Ocean Mixing experiment），以确定地形粗糙的地点是否对全球海洋的混合负责。目标是确定海洋混合的主要能量途径，并实现该区域的大致能量收支。HOME项目的近场实验侧重于研究夏威夷海岭附近的动力过程，特别是对正压潮汐强迫的响应，包括低模态和高模态内波的产生、传播和湍流耗散和混合。该子项目将侧重于将脊顶的局部湍流和切变与潮汐引起的切变和应变的时间变化联系起来，这些切变和应变由研究平台FLIP和海流计系泊的定点观测确定。在春季和小潮期间，将部署深水拖曳体（马林鱼）和垂直微观结构分析器（变色龙）。为了确定其他HOME调查员观测到的高耗散率的空间变异性，还将在高压脊以南3000米深处进行一些观测。