1. Technical University of Darmstadt, Geothermal Science and Technology, Schnittspahnstr. 9, Darmstadt, Hesse 64287, Germany
2. Civil and Environmental Engineering, Bochum University of Applied Sciences, Am Hochschulcampus 1, 44801 Bochum, Germany
3. Helmholtz Centre Potsdam-GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany