A Study of Deep and Abyssal Mixing Processes in the South and Equatorial Atlantic Oceans

0217075对现有的精细组织和显微组织数据进行工具分析。这些数据来自最近对海洋混合过程的两项调查：巴西盆地示踪器释放实验和罗曼奇断裂带环流研究，包括高分辨率剖面仪的垂直剖面观测和系泊流速仪测量。这些数据中的几个信号将被探索、记录并在科学文献中介绍，这些信号涉及(1)精细尺度切变和应变的性质以及在粗略测深(在副热带纬度和赤道)以上的深海中的湍流耗散，(2)大洋中脊断裂内的流动，(3)赤道深射流场中湍流耗散的强度和空间分布，(4)中深内波场的强度和远离赤道附近热带纬度的相关混合。这些项目与增进对深海混合和昼夜运输的了解这一共同目标有关。

0217075 TooleAnalysis of existing finestructure and microstructure data will be conducted. The data, derived from two recent investigations of ocean mixing processes: the Brazil Basin Tracer Release Experiment and the study of Circulation in the Romanche Fracture Zone, consist of vertical profile observations from the High-Resolution Profiler and moored current meter measurements. Several signals in these data will be explored, documented, and presented in the scientific literature that address (1) the nature of the finescale shear and strain and the associated turbulent dissipation in the abyssal ocean above rough bathymetry (at subtropical latitudes and on the equator), (2) the flow within a mid-ocean ridge fracture, (3) the intensity and spatial distribution of turbulent dissipation in a field of equatorially trapped deep jets, and (4) the intensity of the mid-depth internal wave field and associated mixing at tropical latitudes away from the immediate vicinity of the equator. The projects are related by the common goal of improving understanding of mixing and diapycnal transport in the deep ocean.