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

职务名称：玄武岩洋壳的水文地质结构：胡安·德富卡脊侧翼初步IODP考察的软木实验PI/机构：Keir Becker，迈阿密大学RSMAS; Earl Davis，太平洋地球科学中心; Geoff Wheat，阿拉斯加大学，费尔班克斯; Hans Jannasch，蒙特雷湾水族馆研究所摘要：胡安·德富卡扩张脊的东侧是了解脊侧翼环境中地壳热液过程的最佳研究地点之一。 研究人员试图通过在2004年夏天的综合大洋钻探计划（IODP）考察期间安装新的地球物理和地球化学监测设备，并通过后来的潜水访问钻孔观测站下载数据和恢复流体样本，来解决有关这个水文地质系统的主要问题。 为了监测压力和温度，将在两个现有的Juan de Fuca钻孔和一个新的IODP钻孔中部署允许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限制高度非均匀和破碎的洋壳的三维水文地质结构。 在2004年年中安装CORK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。 在这些潜水作业期间，还将从该区域其他3个现有的COKs（ODP孔1024 C、1025 C和857 D）下载数据。

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).