Development and Testing of Simple Deep-Drifting Shearmeters

简单深漂移剪切计的开发和测试

• 批准号: 9416014
• 负责人: Timothy Duda
• 金额: $ 23.11万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-12-15 至 1998-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416014&HistoricalAwards=false
• 关键词: Development; Testing; Simple; Deep; Drifting

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.

9416014都达伍兹霍尔海洋研究所将承担一项海洋技术项目，以设计、建造和测试一种新型的深海剪切计漂移器。深海切变(水平速度的垂直梯度)的测量具有重要的科学意义，但使用现有技术一直是困难和昂贵的。10米长的漂移器将设计简单，没有移动部件，并将通过它们的动力学将剪切转换为可测量的信号。他们将能够测量垂直间隔10米的剪切力，同时部署在深达5公里的地方。此外，流浪者将能够保持部署长达一年。它们将由一个旋转的垂直圆柱体组成，由流经两端的叶片驱动。刚性安装的叶片将提供与流动的水的动态相互作用。作为剪切的结果，长圆柱体的倾角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Seneca Lake的测试设施中进行。