128 Geophysics in Geothermal Exploration (a) (b) Figure 3.9 Depth migrated acoustic section obtained in a highly deviated geothermal well (after Hirabayashi et al., 2024). Depth migration image and borehole geometry in the vertical depth (a). Enlargement of the 120 m (long) × 13 m (high) rectangle window shown in a, which shows noiseless, highly defined geological progradations (b).
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