Hydrogeology Experiments in the Ocean Drilling Program, 1988-1990

井下测量和记录已被证明是大洋钻探方案科学作业的一个重要组成部分。ODP头两年最重大的科学成就之一是在第102、109和111段期间在深入洋壳的孔中进行了广泛的井下地球物理测量计划。来自这些孔的数据被用来解析洋壳的物理、化学和水文地质状态，并允许将来自孔的样品的数据外推到区域尺度。这一奖项将支持迈阿密大学的Becker博士在接下来的两年钻探中进行一系列水文地质实验。这些实验包括一个钻柱封隔器，它可以隔离并检查孔的部分是否有流体流动；一个大规模的电阻率实验，以检查地壳岩石的电性；以及流量计实验，以监测流入地壳孔的流体。这些实验将提供有关地壳基本性质(渗透率、孔隙度和孔压)的基本数据，这些性质控制着地壳流体在洋壳中的运动。

Downhole measurements and logging have proven to be an essential component of the scientific operations of the Ocean Drilling Program. One of the most significant scientific successes of the first two years of ODP has been the extensive programs of downhole geophysical measurements conducted during Legs 102, 109, and 111 in holes that penetrate deep into the oceanic crust. Data from these holes has been used to resolve the physical, chemical, and hydrogeological state of the oceanic crust and allow data on samples from the hole to be extrapolated to the regional scale. The present award will support Dr. Becker at the University of Miami to undertake a series of hydrogeology experiments during the next two years of drilling. The experiments include a drillstring packer which allows sections of the hole to be isolated and examined for fluid flow; a large-scale resistivity experiment to examine electrical properties of crustal rock; and, flowmeter experiments to monitor fluid flow into crustal holes. These experiments will provide essential data on the basic properties of the crust (permeability, porosity, and pore pressure) which control the movement of crustal fluids in the oceanic crust.