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Geothermal Energy

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Figure 5 | Geothermal Energy

Figure 5

From: Characterization of ambient seismic noise near a deep geothermal reservoir and implications for interferometric methods: a case study in northern Alsace, France

Figure 5

Band-pass filtered cross-correlation functions and example of dispersion diagram. The CCFs are computed for each possible station pair and band-pass filtered between 0.2 and 0.8 Hz (1.25 to 5 s, left), 0.8 and 1.5 Hz (0.66 to 1.25 s, right), and 1.5 and 3 Hz (0.33 to 0.66 s, bottom left). Bottom right: dispersion diagram obtained by frequency-time analysis of the KUHL-BETS station pair. The solid line indicates the fundamental mode of the Rayleigh waves. The color code corresponds to the energy of the signal in the group velocity versus period domain in arbitrary units (red corresponds to high energy and blue means no energy).

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