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Rb同位素比值。这些测量将能够确定流体在地壳中的停留时间，为脊轴地壳中流体运动和水-岩相互作用的时间尺度提供重要信息。将分析大洋中脊四个主要热液系统(东太平洋隆起、刘扩张中心、胡安德·富卡海脊和中大西洋海脊)的岩石和流体样本。所产生的数据对于合成和整合Ridge 2000方案的岩石和生物数据至关重要，该方案侧重于四个指定地点中的三个。由于热液中镭的快速衰变，这项研究将是一项具有时效性的研究。这项工作的更广泛影响包括扩大Ridge 2000数据集和将结果纳入迈阿密大学海洋学本科课程。

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.