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 Warrenthis提案是世界海洋循环实验（WOCE）的目标（分析，解释，建模和合成）阶段的贡献。 在WOCE印度洋调查中，在南部20度（毗邻马达加斯加的东部侧面，印度山脊和九个山脊）的三种深度西部边界潮流系统中，将当前的仪表部署在三种深度西部边界潮流系统中。 在部署和恢复过程中，CTD（电导率 /温度 /深度）部分沿着系泊线占据。 该项目中的PI将与TAMU和俄勒冈州立大学的科学家合作，分析当前的测量和水财产数据。 这些电流中圆极深水的平均运输和时间变化的计算将对印度洋的子午倾覆循环（MOC）的强度进行估计。 较早的间接计算表明，与太平洋相比，印度洋的MOC在印度洋的异常大小，但是当前仪表记录的早期指示反驳了这一点。 在马达加斯加附近，已经观察到了中深度的令人惊讶的向南流动，需要仔细记录这种异常现象，以及它对海洋范围内的子午线倾覆的影响。