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http://dx.doi.org/10.7582/GGE.2015.18.4.171

Electrical Resistivity at Room Temperature and Relation between Physical Properties of Core Samples from Ulleung Island  

Lee, Tae Jong (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Lee, Sang Kyu (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Yun, Kwan-Hee (Korea Electric Power Research Institute (KEPRI))
Publication Information
Geophysics and Geophysical Exploration / v.18, no.4, 2015 , pp. 171-180 More about this Journal
Abstract
Electrical resistivity of 23 core samples from Ulleung Island at dry or saturated condition has been measured along with dry density and effective porosity, and the relations between the properties has also been discussed. Upper and lower bounds of electrical resistivity at room temperature can be provided by the dry- and saturated-resistivity, respectively. Injecting nitrogen gas to the pore space at the very end of drying process can prevent humid air from getting into the pore space, so that measurement of dry-resistivity can be less affected by humidity in the air. Dry density and porosity have very close correlation; the ratio between increase of porosity and the decrease of density showed distinct relation to the rock types, such that basaltic rocks showed higher ratio while trachytic rocks showed lower. Saturated resistivity showed close correlation to density and effective porosity of the rock sample, while dry resistivity didn't.
Keywords
Ulleung Island; core sample; saturated resistivity; dry resistivity; density; effective porosity; correlation;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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