eprintid: 1895 rev_number: 14 eprint_status: archive userid: 2 dir: disk0/00/00/18/95 datestamp: 2017-02-20 08:43:14 lastmod: 2018-03-28 12:18:24 status_changed: 2017-02-20 08:43:14 type: article metadata_visibility: show creators_name: Shapiro, Serge A. creators_name: Kummerow, J. creators_name: Dinske, Carsten creators_name: Asch, G. creators_name: Rothert, Elmar creators_name: Erzinger, J. creators_name: Kumpel, H.-J. creators_name: Kind, R. creators_id: shapiro@geophysik.fu-berlin.de creators_id: creators_id: creators_id: creators_id: rothert@q-con.de creators_id: creators_id: creators_id: corp_creators: Fachrichtung Geophysik, Institut für Geologische Wissenschaften, Berlin, Germany corp_creators: GeoForschungsZentrum, Potsdam, Germany corp_creators: Fachrichtung Geophysik, Institut für Geologische Wissenschaften, Berlin, Germany corp_creators: Fachrichtung Geophysik, Institut für Geologische Wissenschaften, Berlin, Germany corp_creators: Fachrichtung Geophysik, Institut für Geologische Wissenschaften, Berlin, Germany corp_creators: GeoForschungsZentrum, Potsdam, Germany corp_creators: Institut für Geowissenschaftliche Gemeinschaftsaufgaben, Hannover, Germany corp_creators: Fachrichtung Geophysik, Institut für Geologische Wissenschaften, Berlin, Germany title: Fluid induced seismicity guided by a continental fault: Injection experiment of 2004/2005 at the German Deep Drilling Site (KTB) subjects: MP4 subjects: MP6 subjects: RG subjects: SG divisions: EPOS-IP full_text_status: none abstract: Recent hydraulic experiments at the KTB site have shown that seismicity induced by long-term fluid injection directly into a continental crustal fault remains guided by this fault. The seismicity is triggered by pressure perturbations as low as 0.01–1 bars at the hypocenters. A combination of sequential one-year fluid extraction (2002/2003) and one-year fluid injection (2004/2005) experiments has shown that only positive pore pressure perturbation (i.e., injections) was able to induce the seismicity. Moreover, the onset of seismicity roughly coincides with the time of compensation of the extracted fluid volume by the following injection. This confirms that the pressure diffusion is a dominant mechanism of seismicity triggering by fluid injections. The probed fault shows a significant anisotropy and non-linearity of its hydraulic behaviour. Its hydraulic diffusivity is up to one order of magnitude larger than that of surrounding rocks. date: 2006-01 date_type: published publication: Geophysical Research Letters volume: 33 number: 1 publisher: American Geophysical Union id_number: 10.1029/2005GL024659 issn: 0094-8276 access_IS-EPOS: limited software_references: Fracture_Network_Models-Mechanical_Stresses owner: Publisher citation: Shapiro, Serge A. and Kummerow, J. and Dinske, Carsten and Asch, G. and Rothert, Elmar and Erzinger, J. and Kumpel, H.-J. and Kind, R. (2006) Fluid induced seismicity guided by a continental fault: Injection experiment of 2004/2005 at the German Deep Drilling Site (KTB). Geophysical Research Letters, 33 (1). DOI: https://doi.org/10.1029/2005GL024659