Turbulence and Mixing in the Surface Wave Layer

表面波层中的湍流和混合

• 批准号: 9812182
• 负责人: W Melville
• 金额: $ 69.5万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812182&HistoricalAwards=false
• 关键词: Turbulence; Mixing; Surface; Wave; Layer

Melville The turbulence and mixing in the first few meters of the mixed layer (the surface wave layer) as well as their relation to wave breaking and to transport by Langmuir circulation will investigated in a series of field experiment off the California coast. The measurements will be made from a light weight buoy system measuring winds, waves, air temperature, and vertical arrays of acoustic instruments in the water to measure turbulent kinetic energy, dissipation and bubble entrainment. Conductivity sensors will be used very close to the surface to measure high void fractions. A surface scanning Acoustic Doppler Profiler will be used to characterize the Langmuir circulations. Models of dissipation due to breaking and of turbulence in the surface wave layer will be tested against the observations.

梅尔维尔将在加州海岸外进行一系列的野外试验，研究混合层（表面波层）最初几米处的湍流和混合，以及它们与波浪破碎和朗缪尔环流输送的关系。测量将通过一个轻型浮标系统进行，该系统测量风、波浪、空气温度，并在水中垂直排列声学仪器，以测量湍流动能、耗散和气泡夹带。电导率传感器将在非常接近表面的地方使用，以测量高空隙率。将使用表面扫描声学多普勒剖面仪来表征朗缪尔环流。由于破碎和湍流在表面波层中的耗散模型将根据观测结果进行测试。