Volume 58, Issue II of the Summary covers data analysis on the last six months of data year 2021 including: Summary of Seismicity, Statistics of Collected Data, Overview of the ISC Bulletin, Leading Data Contributors.

Featured article:

• Reported Teleseismic Phase Statistics at the ISC over the last Four Decades

Cite full issue as: International Seismological Centre (2025), Summary of the Bulletin of the International Seismological Centre, July - December 2021, 58(II), https://doi.org/10.31905/O98BYKYC.

Adverts of ISC sponsors included in this issue: