Mantle Control of a Dynamically Evolving Spreading Center

这个项目的目的是检验若干关于动力过程的想法，这些动力过程是造成南纬31度至36度南大西洋中慢速扩展率海脊系统上海脊几何形状的波峰空间和时间变化的原因。该计划包括两个船上腿进行地球物理研究，包括重力，磁力和地震折射，沿着与Seabeam和疏浚。船上程序之后将进行基于实验室的地球化学分析和结果的三维数值模拟。这是一个令人兴奋的项目，来自一流的调查团队，他们正在尝试对山脊顶部的基本过程进行非常彻底的研究。多学科的方法是一个积极的进步，因为是研究深层次的过程，如地幔上涌结合其重力和地球化学的表面表现的想法。

The objective of this project is to test several ideas concerning the dynamic processes responsible for cresting spatial and temporal variation in ridge geometry on the slow- intermediate spreading rate ridge system in the South Atlantic from 31 to 36 South. Program involves two ship board legs to conduct geophysical studies including gravity, magnetics, and seismic refraction, along with Seabeam and dredging. Shipboard program is to be followed by lab based geochemical analysis and 3 dimensional numerical modeling of results. %%% This is an exciting project from a first rate team of investigators who are attempting a very thorough study of fundamental processes at ridge crests. The multi-disciplinary approach is a positive step forward, as is the idea of studying deep seated process such as mantle upwelling in conjunction with their surface expression in gravity, and geochemistry.