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Geothermal Energy

Science – Society – Technology

Fig. 7 | Geothermal Energy

Fig. 7

From: Parameter identification and range restriction through sensitivity analysis for a high-temperature heat injection test

Fig. 7

Sensitivity of the Normalized Mean Average Error (NMAE) to parameter variation, which are normalized to the range of field measurements. Thus, -1 corresponds to the minimum and 1 to the maximum measured values, respectively, while 0 represents the base case. 2 on the x-axis consequently means a value corresponding to the base case plus twice the difference to the maximum measured value. Solid lines represent parameter ranges estimated at the field site and dashed lines show the range obtained from the literature. The right-hand side figure is a zoom on the area marked by a grey frame on the left-hand side figure

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