Fig. 1. Diagram showing principal components of the plates of the PEDB.
Fig. 2. PEDB installation in a thermo-hygrostat device.
Fig. 4. Thermal conductivity of the samples from GH3 (a) and GH4 (b) in Ulleung Island as a function of depth.
Fig. 5. Correlation analysis of effective porosity and density. (a) Porosity versus dry density, (b) porosity versus saturated density, (c) porosity versus solid density, (d) porosity versus density ratio (Sat./Dry density).
Fig. 6. Correlation analysis of Thermal conductivity and density. (a) Thermal conductivity versus density, (b) thermal conductivity ratio (Sat./Dry) versus density, (c) thermal conductivity ratio (Sat./Dry) versus density ratio (Sat./Dry).
Fig. 8. Correlation analysis of thermal conductivity and porosity. (a) Thermal conductivity ratio (Sat./dry) versus porosity, (b) relation between thermal conductivity ratio (Sat./dry) and porosity for different rock types.
Fig. 7. Relation between thermal conductivity and porosity. (a) Porosity effect on thermal conductivity derived by a geometric mean model (Woodside and Messmer, 1961), (b) thermal conductivity versus porosity of rock samples obtained from Ulleung Island.
Fig. 9. Distribution of thermal conductivity ratio for the samples from different depths of (a) GH3 and (b) GH4. Porosity distribution of (c) GH3 and (d) GH4 deduced from thermal conductivity ratio.
Fig. 3. Calibration curves obtained from the 4 different cases of measurement condition.
Table 1. Calibration curve equations obtained from four different measurement conditions.
Table 2. Thermal conductivity of the KU (fused quartz) standard samples.
Table 3. The effect of applying vaseline on the circumferential surface of the saturated rock specimens.
Table. 4. Comparison of Thermal conductivity for saturated and dry samples. (LT: Lapilli Tuff, Tr: Trachyte PTr: Porphyritic Trachyte, Tf: Tuff, TB: Tuff Breccia)
Table 5. Comparison of dry and saturated thermal conductivity of the core samples from the two boreholes with respect to rock types.
Table 6. Thermal conductivity, density, and effective porosity of core samples from Ulleung Island.
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