Catalogue of microseismicity with magnitude recorded at Soultz-sous-Forêts during the 2010 episode. Calculated by N. Cuenot. Number of events: 411. Time period: 02:11:21 03/01/2010 to 22:29:36 29/10/2010. The data parameters are the following: Column 1: Date (dd/mm/yyyy) Column 2: Time (hh:mm:ss) Column 3: Latitude WGS84 Column 4: Longitude WGS84 Column 5: Elevation WGS84 Column 6: RMS Column 7: Horizontal error Column 8: Azimuthal gap Column 9: Magnitude Last update of data: 29/11/2019

The downhole seismic network in 2003 consisted of three 4 component accelerometers built by the CSMA and three Calidus type high temperature 3-component geophone receivers. The accelerometers in boreholes 4550 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4550), 4601 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4601) and OPS4 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-OPS4) were placed as they were during the monitoring in 2000. Two geophones were deployed in EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) and GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1). Another geophone was tested in borehole 4616 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4616) during the monitoring. This was first connected to the acquisition system at 17:30 20th June. At that time the sensor was on the surface. The tool was deployed onto the bottom of 4616 on 17th July. The detection of seismic events was performed by triggering. Each recorded signal has a duration of 5 s. The X,Y,Z coordinates in the file refer to the local coordinate system with the GPK1 wellhead as origin: X: Easting in meters from GPK1 wellhead (toward UTM32 East) Y: Northing in meters from GPK1 wellhead (toward UTM32 North) Z: Depth in meters from GPK1 wellhead The local coordinate system is based on the UTM32 system. The coordinates of the stations in the local coordinate system have been obtained from the Semore Seismic report for Socomine by B.C. Dyer et al., 2004 (Soultz GPK3 stimulation and GPK3-GPK2 circulation May to July 2003. Seismic monitoring report). The latitude, longitude and elevation in the WGS84 coordinate system have been derived from the local coordinate system. Last update of data: 10/09/2019

In 1996, three new accelerometers (4-component sensors) built by the CSMA and one hydrophone were deployed. As in past years, the 4-component sondes were located in boreholes 4616 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4616), 4601 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4601) and 4550 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4550) within the granite and the hydrophone was deployed in EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1). Unlike the previous episodes, the accelerometers were not grouted in the boreholes. The X,Y,Z coordinates in the file refer to the local coordinate system with the GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) wellhead as origin: X: Easting in meters from GPK1 wellhead (toward UTM32 East) Y: Northing in meters from GPK1 wellhead (toward UTM32 North) Z: Depth in meters from GPK1 wellhead The local coordinate system is based on the UTM32 system. The coordinates of the stations in the local coordinate system have been obtained from the CSMA report for Socomine by Jones and Jupe, 1997 (Microseismic results from the Soultz 1996 experimental programme). The latitude, longitude and elevation in the WGS84 coordinate system have been derived from the local coordinate system. Last update of data: 16/02/2021

Microseismic catalogue of the surface network recorded at Rittershoffen during the field operations between 2012 and 2014. Calculated by ÉS-Géothermie. Number of events: 1348. The microseismic events were recorded during the drilling of the two wells and the hydraulic tests realized at GRT-1. No seismic event was recorded during the hydraulic tests realized at GRT-2. Time period: 29/11/2012 22:23:32 to 26/05/2014 23:43:55. The data parameters are the following: Column 1: Date Column 2: Origin time (UTC) Column 3: Easting in extended Lambert II coordinate system Column 4: Northing in extended Lambert II coordinate system Column 5: Latitude in WGS84 coordinate system * Column 6: Longitude in WGS84 coordinate system * Column 7: Depth (true vertical depth below sea level) Column 8: Local magnitude (vertical component) Column 9: Azimuth of the small uncertainty axis Column 10: Dip of the small uncertainty axis Column 11: Azimuth of the middle uncertainty axis Column 12: Dip of the middle uncertainty axis Column 13: Smallest uncertainty Column 14: Middle uncertainty Column 15: Largest uncertainty Column 16: Recorded period (0-GRT-1 drilling, 1-GRT-1 thermal stimulation, 20-GRT-1 hydraulic stimulation, 21-GRT-1 burst of seismicity and 3-GRT-2 drilling) * Latitude and longitude in the WGS84 coordinate system have been derived from easting and northing in extended Lambert II. Original data from Maurer et al., 2020 https://doi.org/10.1186/s40517-020-0155-2

A permanent network designed to monitor the microseismic activity at Soultz-sous-Forêts was installed by EOST (Ecole et Observatoire des Sciences de la Terre) from the Strasbourg University in 2003. It consisted of nine stations, six one-component and three three-component sensors. A temporary network of four three-component stations completed the permanent network during the 2004 and 2005 episodes. In addition to the permanent and temporary surface network, a broad-band Güralp sensor was used mostly for waveform analysis. Two other accelerometers completed the surface monitoring system too. The coordinates of the stations have been obtained from RESIF (https://www.resif.fr/">https://www.resif.fr). Last update of data: 03/02/2020

During June/July 2000 a hydraulic stimulation program was conducted in the well GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK2) at the European Hot Dry Rock project, Soultz-sous-Forêts, France. The stimulation was performed over the openhole section of GPK2 from 4431 m measured depth (MD) to the bottom of the well at around 5084 m MD. A total of 27 800 m3 of water were injected. At the start of the stimulation 700 m3 of brine with a density of approximately 1.2 g/cc were injected in an effort to encourage downward growth of the stimulated region. The stimulation covered a period of 6 days. After a break of 7 days a post-fracturing, injection test was performed. Seismic monitoring continued for a further 11 days after the injection test (Dyer, B., 2001.Soultz GPK2 stimulation June/July 2000. Seismic monitoring report.). Dates of the different tests of the 2000 hydraulic program: - Stimulation test at GPK2: from 18:44 30/06/2000 to 16:33 06/07/2000. - Post-stimulation injection test at GPK2: from 10:09 13/07/2000 to 20:25 15/07/2000. The Episode contains several datasets which you can find further down the page in "Links".

GNSS data are recorded near Rittershoffen at ECOG, RITT, STUN and HATN stations and are provided by the operator ECOGI (ECOG, RITT) and EOST (STUN, HATN). Data format is Rinex. The stations are described :https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/GNSS-Stations See : https://cdgp.u-strasbg.fr/Obsnef-Gnss/situation.php for stations location and data availability

Catalogue of microseismicity with magnitude recorded as part of Fiori’s thesis, around Vendenheim site. Work on this catalog was published in the article : Fiori, R., Vergne, J., Schmittbuhl, J., Zigone, D. (2023). Monitoring induced microseismicity in an urban context using very small seismic arrays: The case study of the Vendenheim EGS project. GEOPHYSICS : Volume 88, Issue 5 (https://doi.org/10.1190/geo2022-0620.1) Earthquakes detected by this network are compared to the regionally distributed network used by the Bureau Central Sismologique Français-Réseau national de surveillance sismique (BCSF-Renass), the national academic agency in charge of monitoring seismicity in France. Stations information are available : DENSGEOVEN 1: the appromimate dates of the deployement : December 10,2020 to April 6, 2021 DENSGEOVEN 2: the approximate dates of the deployement : July 16,2021 to August 18, 2021 Time period : 01/12/2020 to 29/09/2021 The data parameters are the following: Column 1: Date (UTC) Column 2: Time (UTC) Column 3: Latitude (°) Column 4: Longitude (°) Column 5: Depth (m) Column 6: Magnitude Column 7: Coherence Column 8: Catalogue

The 2004 stimulation was aimed at improving the hydraulic performances of the well GPK4 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK4). This borehole was stimulated twice. The 2004 episode corresponds to the first stimulation of GPK4. 9300 m3 of water were injected during the test at a constant flowrate of 30 l/s, with peaks up to 45 l/s. A low flow injection test of GPK4 was performed before the stimulation to evaluate the initial injectivity of the well. The data from the injection test are included too. Dates of the 2004 hydraulic programme: - GPK4 low flow injection: from 10:38 08/09/2004 to 10:00 12/09/2004. - GPK4 stimulation: from 08:32 13/09/2004 to 20:00 16/09/2004. The Episode contains the following datasets: - Microseismic catalogue of the downhole network by B.C. Dyer - Soultz-sous-Forêts 2004 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Catalogue_downhole); - Microseismic downhole network - Soultz-sous-Forêts 2004 and 2005 Stimulations (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Downhole_network); - Seismological waveforms - Soultz-sous-Forêts 2004 Stimulations (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Waveforms); - Hydraulic data - Soultz-sous-Forêts 2004 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Hydraulic); - Velocity model and station corrections used by B.C. Dyer to locate seismic events recorded by the downhole network - Soultz-sous-Forêts 2004 and 2005 Episodes (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-velocity_model_downhole);

Hydraulic data recorded at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1), GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2),GPK3 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK3), GPK4 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK4) and EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) during the 2005 GPK4 hydraulic stimulation program. Time period: 07/02/2005 13:51:26 - 03/04/2005 02:02:10 (UTC). The data parameters are the following: Column 1: Experiment test Column 2: Date and time (UTC) Column 3: Qin_omega - GPK4 injection flowrate Column 4: Vin - Cumulative volume of injected fluid Column 5: Tin_omega - Temperature of injected fluid Column 6: WL_Tank - Water level in the tank * Column 7: P_Tank - Pressure in the tank * Column 8: Rho_Tank - Density of injected fluid Column 9: Pw3 - GPK3 wellhead pressure Column 10: Pan3 - GPK3 annulus pressure Column 11: Pw2 - GPK2 wellhead pressure Column 12: Pan2 - GPK2 annulus pressure Column 13: Pw4 - GPK4 wellhead pressure Column 14: Pan4 - GPK4 annulus pressure Column 15: Pan_EPS1 - EPS1 annulus pressure Column 16: Pwc1 - GPK1 wellhead pressure Column 17 : Pan1 - GPK1 annulus pressure * The tank was used as a buffer for injection fluid. Last update of data: 31/10/2018