GAGE: A Guiana Abyssal Gyre Experiment

GAGE：圭亚那深海环流实验

• 批准号: 9819066
• 负责人: Michael McCartney
• 金额: $ 127.5万
• 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: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819066&HistoricalAwards=false
• 关键词: GAGE; Guiana; Abyssal; Gyre; Experiment

McCartney9819066The PIs hypothesize that an abyssal gyre fills the western basin of the North Atlantic from the Equator to near 300 N, with the strongest recirculation located in the tropical Guiana Basin. To date, measurements of the deep western boundary current portion of that flow show it to be so large as to upset the overall balance of the meridional overturning circulation. The hypothesized gyre is one mechanism, which, if shown to be of sufficient magnitude, would account for this discrepancy. It has never been observed directly, and the PIs propose a field experiment to to so. The study would focus on the narrow Guiana Basin between 80 N and 150 N. Current meters and temperature sensors, supported by shipboard hydrography and ADCP measurements would be arrayed so as to directly determine the northward flow in this gyre.

McCartney9819066 PIS假设一个深渊的Gyre将北大西洋的西部盆地从赤道填充到接近300 N，最强的再循环位于热带圭亚那盆地。 迄今为止，该流量的深度西边界电流部分的测量表明它是如此之大，以至于破坏了子午倾覆循环的整体平衡。假设的Gyre是一种机制，如果证明具有足够的幅度，则可以解释这种差异。 它从未直接观察到它，PIS提出了一个现场实验。 这项研究将重点放在80 N至150 N之间的狭窄圭亚那盆地上。当前的仪表和温度传感器，由船舶水文和ADCP测量支持，以直接确定此Gyre中的北流流量。