Hawaii Ocean Mixing Experiment: Nearfield Program: Full Depth Tide-Beam Tracking

夏威夷海洋混合实验：近场计划：全深度潮汐束跟踪

• 批准号: 9819536
• 负责人: Craig Lee
• 金额: --
• 依托单位: University of Washington
• 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: 2001-10-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819536&HistoricalAwards=false
• 关键词: Hawaii; Ocean; Mixing; Experiment; Nearfield

9819536 LeeA large coordinated experiment (HOME: Hawaiian Ocean Mixing Experiment) near the Hawaiian Ridge is underway 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. This project is part of the near-field experiment of the HOME project that 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 understanding the mechanisms responsible for generating both low- and high-mode internal tides that radiate energy away from the Ridge and high wavenumber internal waves which dissipate nearer the generation region. Full-depth (including the bottom boundary layer) velocity, density and microstructure profiles will be collected to estimate energy flux, flux divergence and dissipation. Synoptic survey to sample across and along Ridge response will repeated every 2.5 hour for a period of at least 13 hours using XCPs. An extended occupation station (30+ hours) will investigate the contributions of non-tidal inertial motions.

9819536李在夏威夷海脊附近进行的一项大型协调实验（HOME：夏威夷海洋混合实验）正在进行中，以确定地形粗糙的地点是否是全球海洋混合的原因。目标是确定海洋混合的主要能源途径，并为该区域实现大致的能源预算。该项目是HOME项目近场实验的一部分，HOME项目的重点是调查夏威夷海脊附近的动力过程，特别是对正压潮汐强迫的响应，包括产生低模和高模内波，传播和湍流耗散和混合。该子项目将侧重于了解负责产生低模式和高模式内潮的机制，这些内潮辐射远离山脊的能量，而高波数内波则在靠近发电区的地方消散。将收集全深度（包括底部边界层）的速度、密度和微结构剖面，以估计能通量、通量发散和耗散。使用XCP，每隔2.5小时重复一次天气调查，在至少13小时的时间段内，对横跨和沿着洋脊响应进行采样。一个延长的占领站（30小时以上）将调查非潮汐惯性运动的贡献。