ICM3 Analysis

9818246warren该提案是对世界海洋环流实验（WOCE） AIMS （Analysis, Interpretation, Modeling, and Synthesis）阶段的贡献。在WOCE印度洋调查期间，在南纬20度的三个深层西部边界洋流系统（毗邻马达加斯加岛的东部侧翼、印度中部海岭和尼尼特莱夫海岭）上分别部署了海流计。CTD（导电性/温度/深度）段在部署和回收过程中都沿着系泊线进行。该项目的PI将与TAMU和俄勒冈州立大学的科学家合作，对联合测量的水流和水的性质数据进行分析。对这些洋流中绕极深水的平均输送和时间变化的计算将提供印度洋经向翻转环流（MOC）强度的估计。早期的间接计算表明，印度洋的MOC相对于太平洋的MOC异常大，但来自海流记录的早期迹象反驳了这一点。在马达加斯加附近，观察到一股令人惊讶的、强烈的中深南流，这种异常需要仔细记录，以及它对整个海洋经向翻转的影响。

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.