Instrumentation for the Measurement of Bubble Size Distributions in the Ocean Surface Layer

测量海洋表层气泡尺寸分布的仪器

• 批准号: 9529808
• 负责人: W Melville
• 金额: $ 47万
• 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: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9529808&HistoricalAwards=false
• 关键词: Instrumentation; Measurement; Bubble; Size; Distributions

9529808 Melville Funding is provided to the Marine Physical Laboratory at Scripps Institution of Oceanography to develop and test instrumentation for measuring entrained air and bubble size distributions in the ocean surface layer beneath breaking waves. Bubbles in the ocean surface layer play an important role in air-gas transfer, in the generation of aerosols, in biological processes, and in the acoustics of the surface layer. Laboratory data and preliminary field data suggest that air entrained by breaking waves may be dynamically significant through the work done against buoyant forces. The instrument will be a broad band (2kHz -200kHz) system for in situ measurements of the bubble size distribution in the surface layer by inverting direct measurements of sound speed and attenuation over path lengths of 0.1 - 1m. The research will be split into two phases, a laboratory development and testing phase, followed by a field instrument and testing phase.

9529808梅尔维尔向斯克里普斯海洋学研究所的海洋物理实验室提供资金，以开发和测试测量破碎波下海洋表层的夹带空气和气泡大小分布的仪器。海洋表层中的气泡在空气-气体传输、气溶胶的产生、生物过程和表层的声学方面发挥着重要作用。实验室数据和初步现场数据表明，通过对抗浮力所做的功，破碎波携带的空气可能在动力学上具有重要意义。该仪器将是一个宽带(2 kHz-200 khz)系统，通过对0.1-1m路径长度上的声速和衰减的直接测量，原位测量表面层中的气泡尺寸分布。这项研究将分为两个阶段，即实验室开发和测试阶段，随后是实地仪器和测试阶段。