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

A series of hydraulic tests were performed from August to October 1996 at the GPK2 well (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2). First a production test was conducted in August to determine the productivity of the well. The production test was followed by a second stimulation of GPK2 after the previous one in 1995. The open hole section of the well was re-stimulated at flowrates up to 78 l/s. A total of 28000 m3 of fluid was injected during the test. The stimulation was followed by a stepped injection test to determine the injectivity of the well after the stimulation. Finally, two circulation tests during which the water produced from GPK2 was reinjected in GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) were performed in October 1996. About 7500 microseismic events were detected during the experiments, and about 5700 were located. Dates of the different tests of the 1996 hydraulic programme: - Production test at GPK2: from 09:20 14/08/96 to 03:40 15/08/96 - Stimulation test at GPK2: from 16:30 18/09/96 to 22:15 25/09/96 - Stepped injection test at GPK2: from 10:30 29/09/96 to 04:00 06/10/96 - First circulation test between GPK2 and GPK1: from 10:04 12/10/96 to 12:09 20/10/96 - Second circulation test between GPK2 and GPK1: from 15:30 28/10/96 to 19:10 30/10/96 The Episode contains the following datasets: - Microseismic downhole network - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Downhole_network); - Microseismic catalogue with moment magnitude of the downhole network from CSMA - Soultz-sous-Forêts 1996 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Catalogue) - Microseismic catalogue with seismic moment and moment magnitude from Drif et al.(2024) - Soultz-sous-Forêts 1996 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Catalogue_Drif); - Catalogue with hydraulic data from Drif et al.(2024)- Soultz-sous-Forêts 1996 Stimulation (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Seismic_Hydraulic_Comparaison_Drif); - Flow logs - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Flow_logs); - Temperature logs - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Temperature_logs); - Hydraulic data - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1996-Hydraulic);

Velocity model used by M. Calò and C. Dorbath. The velocity was derived from sonic logs operated by Schlumberger in GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) and from transit times for shots fired inside GPK1 at different levels and recorded on the IMRG downhole network (Beauce et al., 1991). The catalogue of events located during 2003 stimulation using the downhole and the surface network is available here (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2003-catalogue). Last update of data: 18/09/2019

Hydraulic data recorded at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) and EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) during the 1994 hydraulic programme. 5 datasets are available: -SSFC1994-Hydraulic_production.csv : Hydraulic data from GPK1 and EPS1 recorded from 14:56:19 16/06/94 to 10:15:44 28/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_production_GPK1.csv : Downhole hydraulic data from GPK1 recorded from 19:42:40 15/06/94 to 07:39:56 30/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_production_EPS1.csv : Hydraulic data from EPS1 recorded from 08:36:33 16/06/94 to 09:15:40 30/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_injection.csv : Hydraulic data from GPK1 recorded from 11:06:29 05/07/94 to 05:35:02 17/07/94 during the injection test at GPK1. -SSFC1994-Hydraulic_injection_GPK1.csv : Downhole hydraulic data from GPK1 recorded from 10:58:39 05/07/94 to 12:56:06 16/07/94 during the injection test at GPK1. For an unknown reason some data are missing on several time periods for the files SSFC1994-Hydraulic_production_GPK1.csv, SSFC1994-Hydraulic_production_EPS1.csv and SSFC1994-Hydraulic_injection_GPK1.csv. Last update of data: 24/01/2020

In June and July 1994, the hydraulic experimental programme consisted of a production test and an injection test at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1). During the production test in June, EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) was used as injection well. A total of 6200 m3 of fluid were produced during the test. Then the injection test in July was intended to determine the injectivity of the stimulated fracture system as a function of the flowrate. A total of 9600 m3 of water were injected at various flowrates during the test (Baria, R., 1996.The European HDR programme 1992 - 1995). Dates of the different tests of the 1994 hydraulic programme: - Production test at GPK1: from 15:58 16/06/94 to 10:15 28/06/96 - Injection test at GPK1: from 11:06 05/07/94 to 14:56 13/07/96 The Episode contains the following datasets: - Microseismic downhole network - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Downhole_network); - Microseismic catalogue of the downhole network from CSMA - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Catalogue_all); - Microseismic catalogue with moment magnitude of the downhole network from CSMA - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Catalogue); - Flow logs - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Flow_logs_gpk1); - Temperature logs - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Temperature_logs_gpk1); - Hydraulic data - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Hydraulic);

Catalogue of microseismicity recorded at Soultz-sous-Forêts during 1995 stimulation, injection and circulation tests. Number of events: 5295. Time period: 15:15:45 14/06/1995 to 04:33:27 15/08/1995. The data parameters are the following: Column 1: Seismic ID Column 2: Time and date (yyyy-mm-dd hh:mm:ss) Column 3: Easting from GPK1 wellhead * Column 4: Northing from GPK1 wellhead * Column 5: Depth from GPK1 wellhead * Column 6: Latitude WGS84 ** Column 7: Longitude WGS84 ** Column 8: Elevation WGS84 ** 3636 events from this catalogue are in the other catalogue for 1995 (available https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1995-Catalogue) as well. There are differences of location for 3287 events between the two catalogues, probably due to the use of different models for the relocation. * 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. Last update of data: 12/07/2019

Hydraulic data recorded at GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2),GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) and EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) during the 1996 hydraulic programme. Five datasets are available: SSFS1996-Hydraulic_production.csv : Hydraulic data recorded from 09:11:13 14/08/96 to 14:32:21 15/08/96 during the production test at GPK2. SSFS1996-Hydraulic_stimulation.csv : Hydraulic data recorded from 12:37:13 18/09/96 to 06:06:05 29/09/96 during the stimulation test at GPK2. SSFS1996-Hydraulic_stepped_injection.csv : Hydraulic data recorded from 10:11:49 29/09/96 to 10:08:15 08/10/96 during the stepped injection test at GPK2. SSFS1996-Hydraulic_circulation_1.csv : Hydraulic data recorded from 10:30:58 13/10/96 to 09:40:47 22/10/96 during the first circulation test between GPK2 and GPK1. SSFS1996-Hydraulic_circulation_2.csv : Hydraulic data recorded from 16:04:00 28/10/96 to 10:15:27 30/10/96 during the second circulation test between GPK2 and GPK1. All the data parameters are described in the header of each file. Last update of data: 13/11/2019

The microseismic network in operation during the 1995 stimulation, injection and circulation experiments represents a slightly modified version of the 1993 system. It consisted of accelerometers (4-component sensors) built by the CSMA in boreholes 4550, 4601, 4616 and of a single hydrophone in EPS1. These sensors were used throughout the 1995 experimental programme. A further hydrophone was deployed in GPK1 at a depth of 3480m to monitor the brine injection (Wilson, S.A., Jupe, A.J., Jones R.H. and Dyer, B., 1996.Microseismic results from the 1995 Soultz experimental programme, CSMA Report for Socomine, January 1996.). 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 magnetic East) Y: Northing in meters from GPK1 wellhead (toward magnetic 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 thesis of S. Bourouis (Sismicité induite et comportement mécanique d'un massif granitique fracturé par injection d'eau). The exact coordinates of the GPK1 hydrophone have not been retrieved and so are not in the file. The latitude, longitude and elevation in the WGS84 coordinate system have been derived from the local coordinate system. Last update of data: 24/07/2019

Microseismic catalogue with local magnitude of the 2000 episode at Soultz-sous-Forêts calculated by B. Dyer (Semore Seismic) using the surface network. Number of events: 51. Microseismic monitoring of the hydraulic programme at Soultz took place between June 30th and July 18th. The catalogue contains the 51 largest events detected on the surface network during the 2000 episode. Each event identity and location in the catalogue was assigned by correlating the times of the events on the surface network with the times of the microseismic events from the catalogue of the downhole network of B. Dyer (available https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-catalogue_downhole). Some discrepancies of few minutes for a same event between the two catalogues are possible because of the gap in time between the twok clocks on the two data acquisition systems. Some locations are missing because of insufficient picks, due to noise, or insufficient data, due to one or more sensors being inoperative. Time period: 30/06/2000 23:09 - 25/07/2000 09:06 (UTC time). The data parameters are the following: Column 1: Event number Column 2: Date (UTC) Column 3: Time (UTC) Column 4: Easting from GPK1 wellhead * Column 5: Northing from GPK1 wellhead * Column 6: Depth from GPK1 wellhead * Column 7: Latitude WGS84 ** Column 8: Longitude WGS84 ** Column 9: Elevation WGS84 ** Column 10: Local magnitude * The local coordinate system is based on the UTM32 system. ** Latitude, longitude and elevation have been derived from the local coordinate system. The description of the surface network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-surface_network). The velocity model used is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-velocity_model_downhole). Last update of data: 20/01/2022

Catalogue of microseismicity with moment magnitude recorded at Soultz-sous-Forêts during the short term and the long term stimulation experiments of the 1995 episode. Calculated by the CSMA. Number of events: 3636. Time period: 20:24:12 14/06/1995 to 14:12:59 29/06/1995. The data parameters are the following: Column 1: Seismic ID Column 2: Event number Column 3: Easting from GPK1 wellhead * Column 4: Northing from GPK1 wellhead * Column 5: Depth from GPK1 wellhead * Column 6: Latitude WGS84 ** Column 7: Longitude WGS84 ** Column 8: Elevation WGS84 ** Column 9: Maximum peak to peak P-wave amplitude Column 10: Maximum peak to peak S-wave amplitude Column 11: Source radius Column 12: Stress drop Column 13: Moment magnitude Column 14: Test name Column 15: Date (dd/mm/yyyy) Column 16: Time (hh:mm:ss) All the events from this catalogue are in the other catalogue for 1995 (available https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1995-Catalogue_all) as well. There are differences of location for 3287 events between the two catalogues, probably due to the use of different models for the relocation. * 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. Last update of data: 12/07/2019