Microseismic catalogue of the 2004 episode at Soultz-sous-Forêts calculated by B.C. Dyer using the downhole network. Number of events: 5861.

The catalogue covers the GPK4 low flow injection test and the GPK4 stimulation test of the 2004 hydraulic program. The events were located by a combination of automatic and manual processing methods. Only events that could be located with an RMS misfit inferior to 5 ms were accepted in the catalogue.

Time period: 08/09/2004 17:46:58 - 24/09/2004 12:19:59 (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 **

Column 11: RMS

Column 12: Local magnitude ***

* 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 magnitude has been estimated using the relationship derived by Sophie Michelet/Matthieu Darnet based on the peak amplitude at the 4550V sensor: M = (-11 + log10 ((0.85 * PeakAmplitudeAt4550V) / 1.0e-9)) * 1.85.

Last update of data: 03/03/2022