Topography controlled mixing along mid-ocean ridges

关于Maria S 2013年在南大西洋进行的Merian cruise 25（MSM 25）首次绘制了全球近5%的脊顶地质和物理海洋学地图。此处提出的建议的目的是首次解释沿着南纬33°至12°缓慢扩张的南中大西洋海岭的这套独特的水文、水深和惰性气体数据。分析的重点将是根据精细结构水文数据计算出的沿脊顶沿着的垂直混合分布，以及沿脊轴沿着的热液源散发的原始氦羽流的水平和垂直扩散。这项预备性研究的结果将成为一项研究提案的基础，该提案旨在利用同时获得的高质量水文和测深数据，在综合若干数据集的基础上，开发一个改进的模型，说明垂直混合对粗糙度和海脊形态的依赖性，供气候模型使用。

With the Maria S. Merian cruise 25 (MSM25) in 2013 in the South Atlantic, nearly 5% of the global ridge crest were mapped for the very first time with regard to geology and physical oceanography. The objective of the proposal presented here is the first interpretation of this unique set of hydrographic, bathymetric, and noble gas data along the slow spreading southern Mid-Atlantic Ridge from 33° to 12°S. The analysis will focus on the distribution of vertical mixing along the ridge crest calculated from finestructure hydrographic data and of the horizontal and vertical spreading of the plume of primordial helium emanating from hydrothermal sources along the ridge axis. The results of this preparatory study will be the basis for a research proposal with the aim to exploit the concurrent high quality hydrographic and bathymetric data to develop an improved model for the dependence of vertical mixing on roughness and ridge morphology for the use in climate models, based on the synthesis of several data sets.