Comparison of Fracture Surface Properties in Natural and Artificially Generated Fractures in Crystalline Rock

Daniel Vogler, ETH Zurich, Geothermal Energy and Geofluids, Institute of Geophysics, Zurich, Switzerland, Stuart D. C. Walsh, Stone Code Pty. Ltd., Sydney, Australia, Peter Bayer, eth, Department of Earth Sciences, Zurich, Switzerland and Florian Amann, ETH Zurich, Department of Earth Sciences, Zurich, Switzerland