The energy company St1 carried out two stimulations of their planned deep geothermal wells in 2018 and in 2020. The seismicity induced by the wells situated in Otaniemi, Espoo, in the Helsinki metropolitan area, southern Finland, were monitored by the Institute of Seismology of University of Helsinki (ISUH). The events detected during the stimulations using automated routines were collected and analysed and compiled into a set of templates which were used in a template matching framework. We provide here the event catalogue produced by running the template matching from the beginning of the first stimulation in June 4th 2018 to December 31st 2022. This dataset comprises 5530 induced earthquakes, with local magnitudes ranging between -1.3 and 1.8. The dataset consists of phase picks, locations, magnitudes and waveform data of the events. The event data, event metadata, and station metadata are provided in distinct directories, and for event data, each event is assigned a subdirectory. Data formats follow generally accepted standards. Further documentation is available within the package. This dataset was produced as part of the SEISMIC RISK: Mitigation of induced seismic risk in urban environments project funded by the Research Council of Finland as a part of the Special funding for research into crisis preparedness and security of supply (8/2020-11/2023; decisions 337913, 338075, 339670).

2024