eprintid: 1990 rev_number: 14 eprint_status: archive userid: 10 dir: disk0/00/00/19/90 datestamp: 2017-09-20 07:09:15 lastmod: 2017-09-20 12:52:54 status_changed: 2017-09-20 07:09:15 type: conference_item metadata_visibility: show creators_name: Lopez-Comino, Jose Angel creators_name: Cesca, Simone creators_name: Kriegerowski, Marius creators_name: Heimann, Sebastian creators_name: Dahm, Torsten creators_name: Mirek, Janusz creators_name: Lasocki, Stanislaw creators_id: creators_id: simone.cesca@gfz-potsdam.de creators_id: creators_id: creators_id: torsten.dahm@gfz-potsdam.de creators_id: jmirek@agh.edu.pl creators_id: lasocki@igf.edu.pl corp_creators: GFZ German Research Centre for Geosciences, Section 2.1: Physics of Earthquakes and Volcanoes, Potsdam, Germany corp_creators: GFZ German Research Centre for Geosciences, Section 2.1: Physics of Earthquakes and Volcanoes, Potsdam, Germany corp_creators: GFZ German Research Centre for Geosciences, Section 2.1: Physics of Earthquakes and Volcanoes, Potsdam, Germany corp_creators: GFZ German Research Centre for Geosciences, Section 2.1: Physics of Earthquakes and Volcanoes, Potsdam, Germany corp_creators: GFZ German Research Centre for Geosciences, Section 2.1: Physics of Earthquakes and Volcanoes, Potsdam, Germany corp_creators: Institute of Geophysics, Polish Academy of Sciences, Krakow, Poland corp_creators: Institute of Geophysics, Polish Academy of Sciences, Krakow, Poland title: Assessing the induced seismicity by hydraulic fracturing at the Wysin site (Poland) subjects: MP1 subjects: RP5 subjects: SHU divisions: SHEER-1 full_text_status: public pres_type: poster abstract: Induced seismicity related to industrial processes including shale gas and oil exploitation is a current issues that im- plies enough reasons to be concerned. Hydraulic fracturing usually induces weak events. However, scenarios with larger earthquakes are possible, e.g. if the injected fluids alter friction conditions and trigger the failure of neigh- bouring faults. This work is focused on a hydrofracking experiment monitored in the framework of the SHEER (SHale gas Exploration and Exploitation induced Risks) EU project at the Wysin site, located in the central-western part of the Peribaltic synclise of Pomerania, Poland. A specific network setup has been installed combining surface installation with three small-scale arrays and a shallow borehole installation. The fracking operations were carried out in June and July 2016 at a depth 4000 m. The monitoring has been operational before, during and after the termination of hydraulic fracturing operations. We apply a recently developed automated full waveform detection algorithm based on the stacking of smooth characteristic function and the identification of high coherence in the signals recorded at different stations. The method was tested with synthetic data and different detector levels yield- ing values of magnitude of completeness around 0.1. An unsupervised detection catalogue is generated with real data for a time period May-September 2016. We identify strong temporal changes (day/night) of the detection performance. A manual revision of the detected signals reveals that most detections are associated to local and regional seismic signals. Only two events could be assigned to the volume potentially affected by the fracking operations. date: 2017 date_type: published event_title: EGU General Assembly 2017 event_location: Vienna, Austria event_dates: 23–28 April 2017 event_type: conference official_url: http://meetingorganizer.copernicus.org/EGU2017/EGU2017-1874-1.pdf access_IS-EPOS: unlimited owner: Publisher citation: Lopez-Comino, Jose Angel and Cesca, Simone and Kriegerowski, Marius and Heimann, Sebastian and Dahm, Torsten and Mirek, Janusz and Lasocki, Stanislaw (2017) Assessing the induced seismicity by hydraulic fracturing at the Wysin site (Poland). In: EGU General Assembly 2017, 23–28 April 2017, Vienna, Austria. document_url: https://episodesplatform.eu/eprints/1990/1/Poster_SHEER_EGU2017.pdf