Development and Testing of Simple Deep-Drifting Shearmeters

伍兹霍尔海洋研究所将承担一项海洋技术项目，设计、建造和测试一种新型深海剪切仪。测量深海中的切变（水平速度的垂直梯度）在科学上是重要的，但使用现有技术一直是困难和昂贵的。10米长的漂流器设计简单，没有活动部件，并通过其动力学将剪切转换为可测量的信号。它们将能够测量垂直距离为10米的剪切，同时部署在深度达5公里的地方。此外，漂流者将能够继续部署长达一年的时间。它们将由一个旋转的垂直圆柱体组成，由两端流过叶片的气流驱动。刚性安装的叶片将提供与流动的水的动态相互作用。由于剪切作用，长圆柱体的倾斜度将由灵敏的机载倾斜仪测量，并与剪切方向和强度有关。原型测试将在测试水箱和纽约州塞内卡湖的测试设施中进行

9416014 Duda The Woods Hole Oceanographic Institution will undertake an oceanographic technology project to design, construct, and test a new type of deep ocean shearmeter drifter. The measurement of shear (the vertical gradient of horizontal velocity) in the deep ocean is scientifically important, but has always been difficult and expensive using existing technologies. The 10 m-long drifters will be simple in design, will have no moving parts, and will convert shear to a measurable signal via their dynamics. They will be able to measure shear at a 10 meter vertical separation while deployed at depths up to 5 km. In addition, the drifters will be able to remain deployed for up to a year. They will consist of a rotating vertical cylinder driven by flow past vanes at either end. The rigidly mounted vanes will provide dynamic interaction with the moving water. The inclination of the long cylinder, as the result of shear, will be measured by a sensitive on board tiltmeter and related to shear direction and intensity. Prototype testing will be done in test tanks and at a test facility in Seneca Lake, N.Y.