Measurement of hydraulic conductivity and specific storage of ocean-bottom sediments is important for understanding the flow patterns and residence times of the pore fluids found in those sediments. Often, those parameters are measured using both an oedometer to measure the consolidation coefficient and specific storage and a permeameter to measure the hydraulic conductivity. Although this combination gives the most accurate measurements, these two items are not part of the usual shipboard complement of apparatus. Furthermore, it may not be possible to conduct the measurements in both apparatus because of either a limited amount of sample or the space limitations for laboratory equipment on board the ship. The Manheim squeezer, designed to extract pore fluids from unconsolidated material, is part of the usual shipboard apparatus. During Leg 195, the Manheim squeezer was used to conduct consolidation tests, which resulted in estimations of the hydraulic conductivity and specific storage of serpentine muds. These muds were recovered from the South Chamorro Seamount (Ocean Drilling Program [ODP] Site 1200), drilled in the Mariana forearc (Fig. F1) during ODP Leg 195. The methodology, assumptions, and results from these tests are presented below.
1Examples of how to reference the whole or part of this volume can be found under "Citations" in the preliminary pages of the volume.
2Wisconsin Geological and Natural History Survey, University of Wisconsin-Extension, Madison WI 53705-5100, USA. djhart@facstaff.wisc.edu
3Center for Lithospheric Studies, University of Texas at Dallas, PO Box 830688, Richardson TX 75083-0688, USA.
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