LIDEX: Lagrangian Isopycnal Dispersion Experiment

hebert / uri该项目试图通过部署等环流RAFOS浮标群，在O(1) Km到O(100) Km的尺度上，获得海洋中等环流弥散和性质通量的直接信息。在为期两年的任务中，这些漂浮物将绘制出东部热带大西洋地区两个不同密度表面的湍流图，该地区位于非洲以西约1400公里处。浮标将测量位置、压力、温度和氧气。将对浮标的轨迹数据以及浮标部署时进行的水文调查数据进行分析，以提供绝对和相对分散率以及应变、涡度和平均流量的估计。还将估计温度和氧气的通量。实验区域与从非洲海岸向西延伸的低氧水舌的边缘重合。这项工作的第二个目标是更好地描述低氧舌，并通过获得有关流动和涡流通量的数据，确定导致其结构的过程。

0117660Hebert/URIThis project is an attempt to get direct information about isopycnal dispersion and property fluxes in the ocean, over scales from O(1) Km to O(100) Km, by deploying clusters of isopycnal RAFOS floats. Over their two-year missions, these floats will map out the turbulent flow along two different density surfaces in a region of the eastern, tropical Atlantic, roughly 1400Km west of Africa. The floats will measure position, pressure, temperature and oxygen. Data on the trajectories of the floats, together with data from a hydrographic survey carried out at the time of float deployment, will be analyzed to provide estimates of absolute and relative dispersion rates as well as strain, vorticity and mean flow. Fluxes of temperature and oxygen will also be estimated. The experimental region coincides with the edge of a tongue of low oxygen water that stretches westward from the African coast. A secondary objective of the work is to obtain a better description of the low oxygen tongue and, by obtaining data about flow and eddy fluxes, determine the processes responsible for its structure.