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Fig. 5 | Geothermal Energy

Fig. 5

From: Coda wave interferometry during the heating of deep geothermal reservoir rocks

Fig. 5

Comparison of simulated CWI measurements obtained for three different central frequencies (f0 = 200 kHz, f0 = 800 kHz and f0 = 1000 kHz) of the Ricker-shaped source, for which the condition necessary to assume a strong scattering regime is verified. Relative time delays are measured by the “stretching technique” when comparing the waveform recorded at a given temperature with respect to the reference waveform. A linear regression is fitted to the measurements to estimate the slopes s(f0)

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