Fig. 9From: Monitoring cold water injections for reservoir characterization using a permanent fiber optic installation in a geothermal production well in the Southern German Molasse BasinAnalysis of velocity of the injected cold water. a Vertical movement of cold waterfront of Inj1. b1 Heat plot of Inj1. b2 Heat plot of Inj2. Gray arrows: suggested 75 °C isotherm. The black arrow marks the proposed major hydraulic active zoneBack to article page