Microseismic catalogue of the 2003 episode at Soultz-sous-Forêts calculated by B.C. Dyer, R. Baria and S. Michelet using the downhole network. Number of events: 21979. The catalogue covers the five phases of the 2003 hydraulic program. Seismic monitoring continued several days after the circulation test. Events were located by a combination of automatic and manual processing methods. Only events that could be located with an RMS misfit < 15 ms were accepted in the catalogue. Time period: 27/05/2003 16:10:29 - 28/07/2003 04:06:26 (UTC time). The data parameters are the following: Column 1: Event ID Column 2: Experiment phase of the hydraulic program Column 3: Date (UTC) Column 4: Time (UTC) Column 5: Easting from GPK1 wellhead * Column 6: Northing from GPK1 wellhead * Column 7: Depth from GPK1 wellhead * Column 8: Latitude WGS84 ** Column 9: Longitude WGS84 ** Column 10: Elevation WGS84 ** * The local coordinate system is based on the UTM32 system. ** Latitude, longitude and elevation have been derived from easting, northing and depth from GPK1 wellhead. The description of the downhole network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2003-downhole_network). Last update of data: 31/08/2021

Microseismic catalogue of the 2003 episode at Soultz-sous-Forêts calculated by M. Calò and C. Dorbath using the surface network. Number of events: 4728. The catalogue was used to perform a time-dependent (4-D) seismic tomography. It covers all the five phases of the 2003 experiment program. The location of events was performed using an automatic procedure for detecting and picking the seismic phases. About 7500 triggers were detected and 4728 events were finally located using at least eight P- and three S-arrival times with a root mean square (rms) lower than 0.04 s. Time period: 27/05/2003 18:37:50 - 12/07/2003 20:31:00 (UTC time). The data parameters are the following: Column 1: Event ID Column 2: Date (UTC) Column 3: Time (UTC) Column 4: Latitude WGS84 Column 5: Longitude WGS84 Column 6: Elevation WGS84 Column 7: Magnitude Column 8: RMS Last update of data: 13/09/2019

Focal mechanisms of seismic events, which occurred during the thermal and hydraulic stimulations, the 2013 July burst and the GRT-2 drilling. Two earthquakes per seismogenic period were considered. More information about the determination of the focal mechanisms and the selection of events is available in the article from Maurer, V. et al., 2020, Seismicity induced during the development of the Rittershoffen geothermal field, France. The data parameters are the following: Column 1: Period Column 2: Date Column 3: Time (UTC) Column 4: Easting (m) Column 5: Northing (m) Column 6: Depth (m TVD MSL) Column 7: Latitude (°) * Column 8: Longitude (°) * Column 9: Mlv Column 10: NPOL Column 11: Dip (°) Column 12: Strike (°) Column 13: Rake (°) * The latitude and longitude in the WGS84 coordinate system have been derived from the extended Lambert II Cartesian system. Original data from Maurer et al., 2020

Before the 2003 episode, 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. It consisted of nine stations, six one-component and three three-component sensors. The network was operational just before the 2003 stimulation of GPK3 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK3). A temporary network of fourteen seismometers (six three-component and eight one-component) was added to this permanent network. Contrary to the 2000 episode, all the fourteen stations of the temporary network were continuously recording. In addition to the network under the responsibility of EOST, 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

Seismological signals acquired during the development phase of the geothermal project at Rittershoffen. Waveforms from the permanent stations described in RITD-Surface_network (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/RITD-Surface_network) are provided for each event from RITD-Catalogue (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/RITD-Catalogue), (-30s, +90s). All the waveforms from the temporary seismic network installed in 2013 and 2014 are available on the GFZ (German Research Centre for Geosciences) data services website.

Interval seismic velocities applied to the 3D velocity model. Vp, Vs and Vp/Vs values for each formation along GRT-1 well. Original data from Maurer et al., 2020

The microseismic monitoring at Rittershoffen began 6 months before any drilling. Four permanent stations were deployed at the surface in 2012 and completed the network of eight surface stations from the Soultz-sous-Forêts network. The permanent network is composed of one or three-components seismometers. A temporary network of 31 stations (TOPASE network) was deployed from June 2013 to November 2014 to improve the dectection and location of the seismic monitoring during the field development operations. The stations of the temporary network were three-component seismometers belonging to the Geophysical Instrument Pool Potsdam (GIPP) of the GFZ German Research Centre for Geosciences. Easting and northing in the file refer to the extended Lambert II Cartesian system. The latitude and longitude in the WGS84 coordinate system have been derived from the extended Lambert II Cartesian system. Original data from Maurer et al., 2020 https://doi.org/10.1186/s40517-020-0155-2

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

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

During May/June 2003 a hydraulic stimulation program was conducted in the well GPK3 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK3); at the European Hot Dry Rock Project, Soultz-sous-Forêts, France. The stimulation was followed in June/July 2003 by a circulation test between GPK3 and GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK2). The stimulation was performed over the openhole section of GPK3 from 4556 m measured depth (MD) to the bottom of the well at around 5101 m MD. A total of 34,000 m3 of water was injected. At the start of the stimulation 450 m3 of brine were injected in an effort to encourage downward growth of the stimulated region. The stimulation covered a period of 11 days. After a break of 7 days, a post-fracturing and circulation test was performed between GPK3 and GPK2 for a period of 17 days (Dyer, B.C., Baria, R. and Michelet, S., 2004. <i>Soultz GPK3 stimulation and GPK3-GPK2 circulation May to July 2003. Seismic monitoring report</i>. Semore Seismic report for Socomine.). Microseismic emissions have been monitored and recorded throughout the experiment, and continued until August 26th. The five principle phases of the hydraulic programme were the following: - Phase 1: GPK3 injection - Phase 2: GPK3 and GPK2 injection - Phase 3: GPK3 injection and GPK2 shut-in - Phase 4a: GPK3 and GPK2 shut-in - Phase 4b: GPK3 shut-in and GPK2 venting - Phase 5: GPK3 to GPK2 circulation The Episode contains the following datasets: - Microseismic catalogue of the surface network with magnitude by M. Calò and C. Dorbath- Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-Catalogue); - Microseismic catalogue of the downhole network by B.C. Dyer et al. - Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-Catalogue_downhole); - Microseismic surface network - Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-Surface_network); - Microseismic downhole network - Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-downhole_network); - Seismological waveforms - Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-Waveforms); - Hydraulic data - Soultz-sous-Forêts 2003 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2003-Hydraulic);