Mantle Control of a Dynamically Evolving Spreading Center

本项目的目的是测试在南大西洋从南31至南36的缓慢-中等扩散速率脊系统中脊几何形状的时空变化的动态过程的几个想法。该计划包括两个船板腿进行地球物理研究，包括重力、磁力和地震折射，以及seabebeam和疏浚。船上程序之后是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，来自一流的研究团队，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。多学科方法是向前迈出的积极一步，正如研究深部过程（如地幔上涌）及其在重力和地球化学中的地表表现的想法一样。

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.