Figure 9From: Mechanical origin of b-value changes during stimulation of deep geothermal reservoirs Velocity map for stiff systems. L=128, left: Map of log10[ V(x,y)] for a stiff system. The average velocity is 〈V〉=0.000147. Right: The corresponding C=2 cluster-map. We identify the velocity cluster by setting all elements above C·〈V〉 to one (yellow) and below to zero (black).Back to article page