Multiple Sampling of DSDP/ODP Bore Hole Waters for Geochemical Studies

大洋地壳第2层水文地球化学研究 对于获得一个更全面的 了解地壳中发生的蚀变反应， 地球化学通量与海洋之间的交换， 第二层。在这两种情况下， 第2层作为地层沃茨对建模和通量至关重要 计算。海洋钻探使这种流体能够直接 抽检不幸的是，钻孔过程经常干扰 井眼中的流体需要一个涉及返回的采样计划 在液体达到平衡后再将其输送到现场。虽然 这种回访是由钻井船本身进行的， 技术正在完善，以允许返回采样， 潜水器（法国）和常规研究船（美国） 国家）。 目前的奖项将继续支持博士吉斯克斯这样的 问题研究他最近与法国人一起参加了一次重新-- 在大西洋的入口。该奖项中的资金将 支持分析和公布这次航行的结果。 此外，他还将设计一个新的采样器， 部署在正在建造的重返大气层飞行器的钻孔中 在斯克里普斯研究所该系统将部署采样器 从在来自水面船只的缆线上导航的车辆， 消除了对昂贵的潜水器或钻井船的需要。

Studies of the hydrogeochemistry of layer 2 of the oceanic crust are of primary importance for gaining a more thorough understanding of alteration reactions occurring in the crust and geochemical fluxes associated with exchange between the ocean and layer 2. In both cases the composition of the fluids trapped in layer 2 as formation waters is critical to modelling and flux calculations. Ocean drilling allows such fluids to be directly sampled. Unfortunately, the drilling process often disturbs the fluids in a hole requiring a sampling plan that involves a return to the site after the fluids have come to equilibrium. Although such return visits have been done by the drillship itself, other techniques are being perfected to allow return sampling by submersible (France) and by regular research vessels (United States). The present award will continue support to Dr. Gieskes for such studies. He has recently participated with the French in a re- entry program in the Atlantic. Funds in the this award will support analyses and publication of the results from this cruise. Additionally, he will undertake the design of a new sampler to be deployed in drillholes from a re-entry vehicle under construction at Scripps Institution. This system will deploy the samplers from a vehicle navigated on a cable from a surface vessel, eliminating the need for a costly submersible or drillship.