[MIS02-P12] ICDP DSeis 9: are streaks in the M5.5 aftershocks potentially located on highly stressed intrusive?
In order to discuss further, we relocated aftershocks with the Double-Difference method (Waldhouser and Ellsworth, 2004). At the moment, we could relocate only 60 events at the upper fringe of the aftershocks. We used in-mine seismic network data of Anglogold Ashanti. P- and S- arrival times that the algorithm of Horiuchi et al. (2011) was used. A sharper alignment of aftershocks is successfully illustrated. By JpGU 2019, we will make additional efforts to extend the area of relocation to discuss more.
Acknowledgement: The DSeis team includes co-authors of the papers ICDP DSeis 2-9 and members shown at https://www.icdp-online.org/projects/world/africa/orkney-s-africa/details/. We thank Harmony Gold, Anglogold Ashanthi, Lesedi, Digital Surveying, OHMS, Seismogen, 3D Geoscience. ICDP, JSPS, SA NRF, MEXT Japan, US NSF, German DRF, and Ritsumeikan Univ. financially support the project.