Synthetic Seismic Reflection Modelling in a Supercritical Geothermal System: An Image of the K-Horizon in the Larderello Field (Italy)

Figure 10

(a) Velocity model, named model 2-A, based on the 3D geological reconstruction obtained after the calibration with CROP-18A data and imposing a velocity value of 4400 m/s for the geological unit below the K-horizon. (b) Velocity model, named model 2-B, based on the 3D geological reconstruction after the calibration with CROP-18A data and imposing a velocity value of 5900 m/s for the geological unit below the K-horizon. (a′) Modelled stacked sections for model 2-A (a) with P velocity of the unit below the K-horizon of 4400 m/s. (b′) Modelled stacked sections for model 2-B (b) with P velocity of the unit below the K-horizon of 5900 m/s. The modelled seismic response, plotted in positive variable area in red, is superimposed onto the processed stacked data, plotted in grey.