ICM3 Analysis

ICM3分析

• 批准号: 9818246
• 负责人: Bruce Warren
• 金额: $ 23.7万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-01 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9818246&HistoricalAwards=false
• 关键词: ICM3; Analysis

9818246WarrenThis proposal is a contribution the the AIMS (Analysis, Interpretation, Modeling, and Synthesis) phase of the World Ocean Circulation Experiment (WOCE). During the WOCE Indian Ocean Survey, current meters were deployed across each of the three systems of deep western-boundary currents at Latitude 20 degrees South (adjacent to the eastern flanks of Madagascar, the Central Indian Ridge, and the Ninetyeast Ridge). CTD (Conductivity / Temperature / Depth) sections were occupied along the mooring lines during both deployment and recovery. The PI in this project will collaborate with scientists at TAMU and Oregon State University on the analysis of the joint current measurements and water property data. A calculation of the mean transport and time variations of the Circumpolar Deep Water in these currents will provide an estimate of the strength of the meridional overturning circulation (MOC) in the Indian Ocean. Earlier indirect calculations have indicated that the MOC is anomalously large in the Indian Ocean relative to that in the Pacific, but early indications from the current meter records refute this. Near Madagascar, a surprising, strong southward flow at mid depths has been observed, and this anomaly needs to be carefully documented, along with its implications for the ocean-wide meridional overturning.

9818246沃伦该提案是对世界海洋环流实验（WOCE）AIMS（分析、解释、建模和综合）阶段的贡献。 在世界海洋环流实验室印度洋调查期间，在南纬20度（邻近马达加斯加岛东翼、中印度洋脊和九十世纪脊）的三个西部边界深层海流系统中的每一个系统都部署了海流计。 在部署和回收期间，CTD（电导率/温度/深度）部分沿系泊缆沿着。 该项目的PI将与TAMU和俄勒冈州州立大学的科学家合作，分析联合电流测量和水属性数据。 计算这些海流中绕极深层水的平均输运和时间变化，将提供印度洋纬向翻转环流（MOC）强度的估计。 早期的间接计算表明，相对于太平洋，印度洋的MOC非常大，但目前的仪表记录的早期迹象反驳了这一点。 在马达加斯加岛附近，在中等深度观察到一个令人惊讶的强烈南向流动，需要仔细记录这种异常，沿着它对整个海洋的纬向翻转的影响。