Microseismic catalogue of the 2000 episode at Soultz-sous-Forêts calculated by B. Dyer (Semore Seismic) using the downhole network. Number of events: 13986. Microseismic monitoring of the hydraulic program at Soultz took place between June 30th and July 18th. During the program, a total of 31511 potential seismic events were recorded from which 13986 seismic events were located.The catalogue covers the two hydraulic tests realized during the 2000 episode. Only the events with an RMS misfit <10 ms were accepted. Time corresponding to the corrected waveforms distributed on the CDGP has been added. Time period: 30/06/2000 19:09:38 - 19/07/2000 07:54:17 (UTC time). The data parameters are the following: Column 1: Event number Column 2: Date (local) Column 3: Time (local) Column 4: Date (UTC) * Column 5: Time (UTC) * Column 6: Date corresponding to the corrected waveforms distributed by the CDGP (UTC) ** Column 7: Time corresponding to the corrected waveforms distributed by the CDGP (UTC) ** Column 8: Easting from GPK1 wellhead *** Column 9: Northing from GPK1 wellhead *** Column 10: Depth from GPK1 wellhead *** Column 11: Latitude WGS84 **** Column 12: Longitude WGS84 **** Column 13: Elevation WGS84 **** * The UTC time has been calculated from the local time. ** Some date and time corresponding to the corrected waveforms are missing. Discrepancies in the time were found with the waveforms for 87 events. Thus, the time corresponding to the corrected waveforms is given for 13899 events only. *** 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/SSFS2000-downhole_network). The seismological waveforms recorded by the downhole and the surface network during the 2000 episode are available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-Waveforms). Last update of data: 28/06/2021

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

Source mechanisms inverted by Dmitry Alexandrov and Leo Eisner (Seismik s.r.o.) from the surface Soultz-sous-Forêts data. This catalog contains 193 events about the 200 strongest. The catalog also includes location, magnitude, origin time and comment field with event id, all copied from the SSFS2000-catalogue (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-catalogue). Last update of data: 03/04/2020

The surface network was installed by EOST, University of Strasbourg, and contained different types of seismological stations. Three of them were permanent stations, belonging to the ReNaSS (French National Seismic Network) and designed to monitor the local, natural seismicity. One broad-band sensor (Güralp type) was also permanently installed at Soultz-sous-Forêts. In addition, fourteen temporary stations were set up during the stimulation test. Eight were continuously recording, telemetered, 1 Hz, single vertical seismometers. Five were autonomous three-component seismometers recording by triggering. Finally one three-component station (CARO) was also continuously recording (Cuenot et al., 2008, Analysis of the Microseismicity Induced by Fluid Injections at the EGS Site of Soultz-sous-Forêts (Alsace, France): Implications for the Characterization of the Geothermal Reservoir Properties). The temporary stations of the surface network were removed on the 11th of July, five days after the shut-in of the GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2) well. Unfortunately, several seismic events occurred after that date and were then only recorded by the permanent surface network. The coordinates of the stations have been obtained from RESIF (https://www.resif.fr) and from the Ph. D. of N. Cuenot (Réponse du granite fracturé de Soultz-sous-Forêts à des injections massives de fluide : Analyse de la microsismicité induite et du régime de contraintes). Last update of data: 03/02/2022

Velocity model described in the PhD thesis of N. Cuenot, used to calculate location of microseismic events of his second catalogue of the 2000 episode at Soultz-sous-Forêts. N. Cuenot used a local tomographic method to get more precise locations for his second catalogue as part of his PhD. The distributed velocity model is the input 1-D layered model required for the tomographic calculations. The second catalogue of events of the 2000 episode calculated by N. Cuenot using tomographic inversion is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-Catalogue_Cuenot_2). Last update of data: 04/06/2021

Microseismic catalogue of the downhole network recorded at Soultz-sous-Forêts during the 1996 episode. Calculated by the CSMA. Number of events: 3464. The microseismic catalogue only covers the stimulation test and few days after. Almost no events were detected during the two lower flow rates of the stimulation. However, a large number of events were observed during the stimulation rate of 78 l/s. Time period: 02:12:13 22/09/1996 to 17:30:45 28/09/1996. 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 (yyyy-mm-dd) Column 16: Time * 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

Seismological signals acquired at Soultz-sous-Forêts during the 2000 Stimulation episode. The waveforms were recorded by a downhole and a surface seismological network during the hydraulic stimulation programme conducted at well GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK2). The downhole seismological network consisted of 5 stations and the surface network of 18 stations. The complete description of the downhole seismological network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2000-downhole_network). The complete description of the surface seismological network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2000-surface_network). Last update of data: 31/01/2020

Velocity model and station corrections described in the PhD thesis of <b>N. Cuenot</b>, used to calculate location of microseismic events of his first catalogue of the 2000 stimulation episode at Soultz-sous-Forêts. N. Cuenot performed preliminary locations during his PhD using a modified version of the HYPOINVERSE program (Klein, 1978). An initial velocity model established by Darnet (2000) was first used but did not give satisfactory results. The velocity model was thus refined. P waves velocities were iteratively calculated by minimizing residual errors at the stations. The ratio Vp/Vs was similarly adjusted in the sedimentary layers. At least, station corrections were used to get hypocenters as precise as possible. The first catalogue of events of the 2000 episode calculated by N. Cuenot using the HYPOINVERSE program is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-catalogue). Last update of data: 26/11/2018

First catalogue calculated by N. Cuenot as part of his Ph. D. The downhole network and the surface network were both used to locate events of the 2000 episode at Soultz-sous-Forêts. Number of events: 7215. The catalogue contains the preliminary locations of events performed by N. Cuenot with a modified version of the HYPOINVERSE program (Klein, 1978). N. Cuenot calculated a second catalogue with more precise locations using tomographic inversion. The catalogue covers only the stimulation test and not the post-injection test of the 2000 episode. Only the events recorded by at least 8 stations (5 from the surface network and the 3 downhole accelerometers) and with an RMS ≤ 0.02 s were kept in the catalogue. The final mean mathematical location error is about 80 m horizontally and 100 m vertically. Time period: 30/06/2000 19:15:18 - 11/07/2000 05:58:03 (UTC). The data parameters are the following: Column 1: Event number Column 2: Date (UTC) Column 3: Time (UTC) Column 4: Latitude WGS84 Column 5: Longitude WGS84 Column 6: Elevation (m) Column 7: Magnitude determined from the seismic signal duration Column 8: RMS Remark: the signals from the RéNaSS stations and the Güralp sensor of the surface network, and from the two hydrophones of the downhole network were not used to locate the events of the catalogue. The description of the surface network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-surface_network). The description of the downhole network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-downhole_network). Last update of data: 27/02/2018

Second catalogue calculated by N. Cuenot as part of his PhD thesis. The downhole network and the surface network were both used to locate events of the 2000 episode at Soultz-sous-Forêts. The catalogue contains 265 events with a magnitude superior to 1.3, with the parameters of the two nodal plans of the focal mechanism detemined using the FPFIT algorithm (Reasenberg and Oppenheimer, 1985)(not available if mechanism not well constrained). The catalogue covers only the stimulation test and not the post-injection test of the 2000 episode. The mean location error is assumed to be less than 50 m horizontally and about 80 m vertically. [see Chapters 6 and 7 and Annexe 1 of Cuenot's Thesis]. Seismic events of the catalogue were located using a tomographic inversion method (Thurber, 1983). The method allows a simultaneous inversion to retrieve both the seismic velocity parameters and the hypocentral parameters in a 3-D layered heterogeneous medium. The location takes into account the evolution of the velocity structure at each iteration. Time period: 30/06/2000 19:41:34 - 11/07/2000 01:14:49 (UTC). 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 welhead * Column 6: Depth from GPK1 wellhead * Column 7: Latitude WGS84 ** Column 8: Longitude WGS84 ** Column 9: Elevation WGS84 ** Column 10: Magnitude determined from the seismic signal duration Column 11: Strike of the first nodal plan solution Column 12: Dip of the first nodal plan solution Column 13: Rake of the first nodal plan solution Column 14: Strike of the second nodal plan solution Column 15: Dip of the second nodal plan solution Column 16: Rake of the second nodal plan solution * The local coordinate system is based on the UTM32 system. ** Latitude, longitude and elevation have been derived from the local coordinate system. Remark: the signals from the Renass stations and the Güralp sensor of the surface network, and from the two hydrophones of the downhole network were not used to locate the events of the catalogue. The description of the surface network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-surface_network). The signals from the RéNaSS stations and the Güralp sensor of the surface network were not used to locate the events of the catalogue. The description of the downhole network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-downhole_network). the signals from the two hydrophones of the downhole network were not used to locate the events of the catalogue The associated velocity model is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS2000-Velocity_model_Cuenot_2). Last update of data: 04/06/2021;