PIV Measurements of Turbulence and Flow Structure in the Water Column of the Coastal Ocean

这项工作结合了仪器开发和科学观测，并寻求将一种经过验证的实验室技术应用于沿海海洋湍流的观测。粒子成像测速（PIV）仪器将部署在沿海水域海底的可扩展平台上。测试后，该设备将被部署在LEO-15站点15米深的水中，并用于重复测量0.25至0.5平方米范围内的流场。所得数据将用于研究沿海海洋湍流的各种特性及其对环境参数（如分层、波浪状态和宏观切变）的依赖。将从已经放置在LEO-15的仪器套件中收集更多数据，以确定环境参数的特征。在晚春和秋季分别部署将使pi能够研究不同分层程度的湍流。

This work combines instrument development and scientific observationsand seeks to apply a proven laboratory technique to the observation ofturbulence in the coastal ocean. A Particle Imagery Velocimetry (PIV) instrument will be deployed on an extensible platform restingon the sea-floor in coastal waters. After testing, the device willbe deployed in 15m of water at the LEO-15 site and used to repeatedlymeasure the flow field over an area of from 0.25 to 0.5 m^2. The resulting data will be used to examine various properties of turbulence in the coastal ocean and its dependence on environmentalparameters such as stratification, wave state and macroscopic shear.Additional data will be collected from the instrument suite alreadyin place at LEO-15 in order to characterize the environmental parameters. Separate deployments during late spring and fall will allow the PIs to study turbulence in different degrees of stratification.