Volume 57, Issue II of the Summary covers data analysis on the last six months of data year 2020 including: Summary of Seismicity, Statistics of Collected Data, Overview of the ISC Bulletin, Leading Data Contributors.

Submitted article:

• A Brief History of Broadband Seismometry – Part I

Cite full issue as: International Seismological Centre (2023), Summary of the Bulletin of the International Seismological Centre, July - December 2020, 57(II), https://doi.org/10.31905/1QE2K1QP.

Adverts of ISC sponsors included in this issue: