Journal of Geography (Chigaku Zasshi)
Online ISSN : 1884-0884
Print ISSN : 0022-135X
ISSN-L : 0022-135X
Applicable Depth Ranges for Estimating Hydraulic Properties from Periodic Pore Pressure Fluctuations Caused by Surface Loadings
Takuya URAKOSHIShinichi HOSOYATomochika TOKUNAGA
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2006 Volume 115 Issue 3 Pages 279-294

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Abstract

Poroelastic properties, including hydraulic properties, govern fluid flow and deformation of geological formations. In this paper, we discuss the applicability of methods for estimating hydraulic properties from pore pressure response to cyclic loading such as atmospheric pressure, earth tide, ocean tide, and seawater wave in terms of loading frequencies, measurement depths, and physical properties of materials. We also show 2 case studies in which we estimate hydraulic diffusivity using pore pressure fluctuations to atmospheric loading at about 100 m in depth, and those to seawater wave loading at about 1 m below the sea floor.

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