Inferring Hydraulic Pressure Changes from Induced Seismicity Observations: Three Showcases from Geothermal Reservoirs

Figure 8

Spatial distribution of the maximum cumulative fluid pressure changes inferred from repeated slip in top view of best-fitting plane. Pressure changes are stated in megapascals according to the colour map, which is saturated at 20 MPa. The 3D arrow indicates northern (green), western (red), and depth (blue) direction after projection and rotation of hypocentre locations. A constant stress drop of (a) 0.1 MPa, (b) 0.5 MPa, and (c) 1.0 MPa was assumed for determining fluid pressure changes. Contour line denotes region of main seismic activity.

(a)

(b)

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