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Geothermal Energy

Science – Society – Technology

Fig. 7 | Geothermal Energy

Fig. 7

From: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Fig. 7

Comparison of iGrav residuals and gravity differences between iGrav006 and iGrav032 with relative groundwater levels (GWL 2, 7 and 8) and with geothermal extraction and injection flow rates of the Þeistareykir power plant from July 2017 until October 2020; dashed arrows mark the beginning of periods with reduced geothermal flow rates and capital letters mark possible response in the gravity residuals and differences (A, B, C and D; with same colour as the corresponding gravity time-series)

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