Mapping of the Seismic B-Value Before and After Mine Collapse Main Shocks, Rudna Mine, SW Poland
Description:
Rudna Deep Copper Mine, located in SW Poland, is known for producing a large number of seismic events on a daily basis in a magnitude range starting below M0 and often ending in large mine collapses with magnitudes over M4. In previous work (Sobiesiak et al., 2022), we were able to enhance existing data sets with induced seismicity from the mine by using the software BackTrackBB (BTBB) (Poiata et al., 2016). This automated detection and location procedure resulted in three large daily data sets from ~6000 and up to ~ 10000 events per day enhancing the catalogs mainly in the range of small scale events. This work permitted a first attempt to apply short term hazard assessment on a daily basis using SHAPE software (Leptokaropoulos and Lasocki, 2020) which would be a crucial aspect for early warning procedures.
Aiming at additional information on processes around the major mine collapses, we decided to perform a mapping of the seismic b-value of the Gutenberg-Richter relation using the software ZMAP (Wiemer et al., 2000). As the b-value possesses the dual capability of displaying ambient stresses as well as changes in material properties and thus mirrors the interaction between internal structures and outer forces, we choose this parameter to decipher more about processes on going in time and space around major mine shocks. The sheer number of events on relatively small volumes further support the method and makes the statiscical approach more stable. Here, we present the results of this mapping procedure for three daily data sets of induced seismicity from Rudna Mine and compare it to the results gained from the application of a short term hazard assessment.
Session: Seismic Monitoring, Modelling and Management Needed for Geothermal Energy and Geologic Carbon Storage [Poster Session]
Type: Poster
Date: 5/2/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Monika
Student Presenter: No
Invited Presentation:
Authors
Monika Sobiesiak Corresponding Author monika.sobiesiak@ifg.uni-kiel.de University of Kiel |
Monika Staszek Presenting Author mstaszek@igf.edu.pl Polish Academy of Sciences |
Konstantinos Leptokaropoulos K.Leptokaropoulos@soton.ac.uk MathWorks |
Lukasz Rudziński rudzin@igf.edu.pl Polish Academy of Sciences |
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Mapping of the Seismic B-Value Before and After Mine Collapse Main Shocks, Rudna Mine, SW Poland
Session
Seismic Monitoring, Modelling and Management Needed for Geothermal Energy and Geologic Carbon Storage