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As part of the GEOBEST-CH research project, the Swiss Seismological Service (SED) has been carrying out seismological monitoring of the geothermal project of the city of St. Gallen since spring 2012. To this end, the SED has built six new seismological stations in the St. Gallen area in cooperation with the St. Galler Stadtwerke (sgsw). The aim of the monitoring is to detect possible small earthquakes - so-called microearthquakes - in the vicinity of the deep wells and to clarify whether these are related to the geothermal project or of natural origin. In addition, the project will collect important fundamental data for a better understanding of deep geothermal energy, which is an indispensable source of experience for ensuring planning reliability fort the cantonal authorities and project operators in future geothermal projects. Following the termination of the geothermal project in spring 2014, the SED will continue to monitor in a reduced form until at least September 2020. St. Gallen Stadtwerke support the monitoring in the framework of the EU project "Science for Clean Energy (S4CE)". |
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| Project Leader at SED | Dr. Toni Kraft |
| SED Project Members | INDU group |
| Funding Source | Bundesamt für Energie, Sankt Galler Stadtwerke |
| Duration | 2012-2020 |
| Keywords | |
| Research Field | Induced Seismicity, Real-time monitoring |
Diehl, T., Kraft, T., Kissling, E. and Wiemer, S. (2017). The induced earthquake sequence related to the St. Gallen deep geothermal project (Switzerland): Fault reactivation and fluid interactions imaged by microseismicity. Journal of Geophysical Research 122(9), 1-19. doi: 10.1002/2017JB014473
Edwards, B., Kraft, T., Cauzzi, C., Kastli, P. and Wiemer, S. (2015). Seismic monitoring and analysis of deep geothermal projects in St Gallen and Basel, Switzerland. Geophys. J. Int. 201, 1020-1037.
Obermann, A., Kraft, T., Larose, E. and Wiemer, S. (2015). Potential of ambient seismic noise techniques to monitor the St. Gallen geothermal site (Switzerland). J. Geophys. Res. Solid Earth 120(6), 4301–4316. doi: 10.1002/2014JB011817
Kraft, T. et al. (2015). Lessons learned from the 2013 ML3.5 induced earthquake sequence at the St. Gallen geothermal site. Schatzalp Workshop on Induced Seismicity, Davos, Switzerland.
Diehl, T., Kraft, T., Kissling, E., Deichmann, N., Clinton, J. and Wiemer, S. (2014). High-precision relocation of induced seismicity in the geothermal system below St. Gallen (Switzerland). EGU General Assembly Conference Abstracts 16, 12541.
Kraft, T., Wiemer, S., Deichmann, N., Diehl, T., Edwards, B., Guilhem, A., Haslinger, F. et al. (2013). The ML 3.5 earthquake sequence induced by the hydrothermal energy project in St. Gallen, Switzerland. AGU Fall Meeting Abstracts 1, 3.