Field Measurements of Ocean Wave Whitecap-Induced Bubbles

海浪白浪引起的气泡的现场测量

• 批准号: 1924393
• 负责人: Grant Deane
• 金额: $ 89.96万
• 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: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1924393&HistoricalAwards=false
• 关键词: Field; Measurements; Ocean; Wave; Whitecap

The goal of the study is to measure bubbles within active whitecaps and the structure of the foam they form on the surface of the ocean, as a function of wind speed and chemistry in the near surface boundary layer in wind-driven seas. Field observations will be made using a Liquid Robotics Wave Glider (LRWG) and include a variety of remote camera observations of ocean wave whitecaps and in situ bubble and foam sensors. The motivation for this work lies in the critical role wave-entrained bubbles and foam play in CO2 transport, aerosol formation, ocean albedo, and the sea to atmosphere transport of biologically active and climatically relevant material. The project will support two summer undergraduate interns in marine science and participation by the investigators in the Perspectives on Ocean Science lecture series, a public outreach vehicle hosted by the Birch Aquarium at Scripps.The project aims to: determine the scale-dependence of bubble creation on bubble size and whether bubble creation rates can be measured within whitecaps using breaking wave noise; address the stabilization of surface foam by surface-active molecules in oceanic whitecaps; and use images to examine the time-varying structure of whitecap foam in wind-driven seas. The field study will be staged on a Liquid Robotics Wave Glider in the open ocean waters off Point Conception. Four primary sensory systems will be deployed: a sub-surface camera to measure bubbles inside actively breaking whitecaps, a 4-element hydrophone array to measure whitecap noise underwater, mast-mounted cameras to measure the cross-sectional area, decay time and structure of whitecap foam, and hull-mounted sensors to provide measurements of surface tension and proxies for biological productivity.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该研究的目的是测量活跃的白塞内的气泡以及它们在海洋表面形成的泡沫的结构，这是风速和化学的函数，在风驱动的海洋中近表面边界层中。将使用液体机器人波滑翔机（LRWG）进行现场观察，并包括海浪白盘以及原位气泡和泡沫传感器的各种远程摄像机观测。这项工作的动机在于二氧化碳运输，气溶胶形成，海洋反照率和海洋至生物学活性和气候相关材料的大气传输的关键作用波动的气泡和泡沫发挥。该项目将支持海洋科学领域的两个夏季本科实习生，研究人员参与了海洋科学讲座系列的观点，这是由Scripp的Birch Aquarium主持的公共外展车。通过表面活性分子在海洋白蛋白酶中的表面泡沫稳定；并使用图像来检查风向海洋中白色泡沫的时变结构。现场研究将在点概念的开阔海水中的液体机器人波滑翔机上进行。将部署四个主要的感觉系统：一个次面相机，用于测量主动打破白盘内的气泡，一个4元素的水文阵列，用于测量水下的Whitecap噪声，桅杆安装的摄像机，以测量横截面区域，衰减时间，衰减时间和whitecap泡沫的衰减时间和升级效果，并提供了测量效率，以衡量标准的效率和效率。 NSF的法定使命，并使用基金会的知识分子优点和更广泛的影响审查标准来评估值得支持。