The stations are part of a seismic network in the Helsinki capital area of Finland in 2020. The stations recorded the response to a second stimulation of a ∼ 6 km deep enhanced geothermal system in the Otaniemi district of Espoo that followed on the first larger stimulation in 2018. The second stimulation from 6 May to 24 May 2020 established a geothermal doublet system.
The Institute of Seismology, University of Helsinki (ISUH), installed the 70 GIPP-provided geophones in addition to surface broadband sensors, ISUH-owned short-period instruments, and a borehole satellite network deployed by the operating company. The data set consists of raw CUBE-recorder data and converted MSEED data. The data set has been collected to underpin a wide range of seismic analysis techniques for complementary scientific studies of the evolving reservoir processes and the induced event properties. These should inform the legislation and educate the public for transparent decision making around geothermal power generation in Finland. The full 2020 network and with it the deployment of the CUBE stations is described in a Seismological Research Letter Data Mine Column by A. Rintamäki et al. (2021).
Phase A: roessler_pollino_locations_gfzpublication20100101_20120527_0_90.png
roessler_pollino_locations_gfzpublication20100101_20120527_movie.avi
Map with the locations of earthquake hypocentres during phase A (01/01/2010 -
27/05/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Day 0 corresponds to the start of the Pollino Seismic experiment on 2
November 2012. The system of normal faults on the surface are redrawn from [1].
Phase B: roessler_pollino_locations_gfzpublication20120528_20120731_0_90.png
roessler_pollino_locations_gfzpublication20120528_20120731_movie.avi
Map with the locations of earthquake hypocentres during phase B (28/05/2012 -
31/07/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Small grey dots: events during the phase A. Day 0 corresponds to the start
of the Pollino Seismic experiment on 2 November 2012. The system of normal faults on
the surface are redrawn from [1].
Phase C: roessler_pollino_locations_gfzpublication20120801_20121024_0_90.png
roessler_pollino_locations_gfzpublication20120801_20121024_movie.avi
Map with the locations of earthquake hypocentres during phase C (01/08/2012 -
24/10/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Small grey dots: events during the phases A, B. Day 0 corresponds to the
start of the Pollino Seismic experiment on 2 November 2012. The system of normal faults
on the surface are redrawn from [1].
Phase D: roessler_pollino_locations_gfzpublication20121025_20121212_0_90.png
roessler_pollino_locations_gfzpublication20121025_20121212_movie.avi
Map with the locations of earthquake hypocentres during phase D (25/10/2012 -
12/12/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Small grey dots: events during the phases A, B,C. Day 0 corresponds to the
start of the Pollino Seismic experiment on 2 November 2012. The system of normal faults
on the surface are redrawn from [1].
Phase E: roessler_pollino_locations_gfzpublication20121213_20121219_0_90.png
roessler_pollino_locations_gfzpublication20121213_20121219_movie.avi
Map with the locations of earthquake hypocentres during phase D (13/12/2012 -
19/12/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Day 0 corresponds to the start of the Pollino Seismic experiment on 2
November 2012. The system of normal faults on the surface are redrawn from [1].
Phase F.1: roessler_pollino_locations_gfzpublication20121220_20131231_0_90.png
roessler_pollino_locations_gfzpublication20121220_20131231_movie.avi
Map with the locations of earthquake hypocentres during phase F.1 (20/12/2012 -
31/12/2012). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Day 0 corresponds to the start of the Pollino Seismic experiment on 2
November 2012. The system of normal faults on the surface are redrawn from [1].
Phase F.2: roessler_pollino_locations_gfzpublication20140101_20140910_0_90.png
roessler_pollino_locations_gfzpublication20140101_20140910_movie.avi
Map with the locations of earthquake hypocentres during phase F.1 (01/01/2013 -
10/09/2014). The yellow star shows the location of the main M5.2 earthquake on 25
October 2012. Day 0 corresponds to the start of the Pollino Seismic experiment on 2
November 2012. The system of normal faults on the surface are redrawn from [1].