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Geothermal Energy

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Figure 4 | Geothermal Energy

Figure 4

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

Figure 4

Beamforming analysis performed at the two small aperture arrays ARIT and AKUL at 0.3-s period (3.3 Hz). Left side: polar histograms showing the relative number of detected arrivals with back azimuth. The histograms are superimposed to the map of the area at the array locations, ©OpenStreetMap contributors. Right side: evolution of the histogram of detected arrivals with the hour of the day at array AKUL. All histograms are normalized to the total number of detected arrivals during each hour.

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