Collaborative Research: The Hydrogeological Architecture of Basaltic Ocean Crust: CORK Experiments for the Initial IODP Expedition on the Flank of the Juan de Fuca Ridge

题目：玄武岩海洋地壳的水文地质结构：胡安·德·富卡山脊侧翼初始IODP考察的CORK实验/机构：Keir Becker，迈阿密大学- rsmas；厄尔·戴维斯，太平洋地球科学中心；Geoff Wheat，阿拉斯加大学费尔班克斯分校；摘要Juan de Fuca扩张脊的东翼是了解脊-翼环境下地壳热液过程的最佳研究地点之一。在2004年夏季“综合海洋钻探计划”（IODP）的考察中，研究人员通过安装新的地球物理和地球化学监测设备，以及随后潜水到钻孔观测站下载数据和恢复流体样本，试图解决有关这一水文地质系统的主要问题。为了监测压力和温度，将在现有的两个Juan de Fuca井眼和一个新的IODP井眼中部署可隔离地层内多个区域的软木塞。在这些密集的钻孔中获得的数据将约束高度非均质和断裂的海洋地壳的三维水文地质结构。在2004年中期安装了CORK装置之后，研究人员将在2005年和2007年访问期间使用一个潜水平台检索数据和流体样本。在潜水作业期间，还将下载该地区其他3个现有软木塞（ODP孔1024C、1025C和857D）的数据。

Title: The Hydrogeologic Architecture of Basaltic Oceanic Crust: CORK Experiments for the Initial IODP Expedition to the Flank of the Juan de Fuca RidgePI/Institution: Keir Becker, University of Miami-RSMAS; Earl Davis, Pacific Geoscience Center; Geoff Wheat, University of Alaska, Fairbanks; Hans Jannasch, Monterey Bay Aquarium Research InstituteAbstract:The eastern flank of the Juan de Fuca spreading ridge is among the best studied sites for understanding crustal hydrothermal processes in a ridge-flank environment. The researchers seek to resolve primary questions about this hydrogeologic system through the installation of new geophysical and geochemical monitoring equipment during a summer 2004 expedition of the Integrated Ocean Drilling Program (IODP) and through later submersible visits to the borehole observatories to download data and recover fluid samples. To monitor pressure and temperature, CORKs that permit isolation of multiple zones within the formation will be deployed in two existing Juan de Fuca boreholes and a new IODP borehole. The data acquired in these closely-spaced boreholes will constrain the three-dimensional hydrogeologic structure of highly hetereogeneous and fractured oceanic crust. Following the CORK installations in mid-2004, the researchers will use a submersible platform to retrieve data and fluid samples during visits in 2005 and 2007. During these submersible operatins, data will also be downloaded from 3 other existing CORKs in the area (ODP holes 1024C, 1025C, and 857D).