SGER: Evaluation of Hydrothermal Fluid Crustal Residence Times in the Global Ridge System Using Radium Isotopes

这项研究有助于收集和分析从海底收集的高温高压海底热液喷口流体中的镭同位素比值。 这些测量将使流体的地壳停留时间得以确定，提供关于流体运动和水-岩石相互作用在脊轴地壳的时间尺度的重要信息。 将分析大洋中脊四个主要热液系统（东太平洋海隆、劳扩散中心、胡安·德富卡海岭和大西洋中脊）的岩石和流体样本。 由此产生的数据是至关重要的综合和整合的岩石和生物数据的山脊2000年计划，重点是三个指定的目标网站。 由于镭在热液中的快速衰变，研究将是一个时间关键的研究。 这项工作的更广泛影响包括扩大2000年海脊数据集，并将结果纳入迈阿密大学的海洋学本科课程。

This research facilitates the collection and analysis of radium isotope ratios in high temperature and pressure hydrothermal submarine vent fluids collected from the seafloor. These measurements will allow the crustal residence times of the fluids to be determined, providing important information on the time scales of fluid movement and water-rock interaction in ridge axis crust. Rock and fluid samples from four major hydrothermal systems (East Pacific Rise, Lau Spreading Center, Juan de Fuca Ridge, and Mid-Atlantic Ridge) on the mid-ocean ridge will be analyzed. Resulting data are critical for the synthesis and integration of rock and biological data for the Ridge 2000 program which focuses on three of the four specified targeted sites. Owing to the rapid decay of radium in hydrothermal fluids, the research to be a time critical study. Broader impacts of the work include augmenting the Ridge 2000 dataset and incorporation of results into undergraduate courses in oceanography at the University of Miami.