International Seismological Centre (ISC)

http://www.isc.ac.uk/cgi-bin/web-db-run?request=COMPREHENSIVE&out_format=ISF2&bot_lat=&top_lat=&left_lon=&right_lon=&searchshape=CIRC&ctr_lat=6.9&ctr_lon=116.2&radius=200&max_dist_units=km&srn=&grn=&start_year=1904&start_month=1&start_day=01&start_time=00%3A00%3A00&end_year=2027&end_month=2&end_day=01&end_time=00%3A00%3A00&min_dep=200&max_dep=&min_mag=&max_mag=&req_mag_type=&req_mag_agcy=&min_def=&max_def=&include_magnitudes=on&include_links=on&include_headers=on&include_comments=on

What an interesting #deep #earthquake in the #Borneo region: earthquake.usgs.gov/earthquakes/...

The figure shows that only 5 events that deep ever occurred nearby in our record, with the 22 Feb 2026 being by far the largest

Volume 58, Issue II of the Summary of the ISC Bulletin is available at doi.org/10.31905/O98...
which also features the "Reported Teleseismic Phase Statistics at the ISC over the last Four Decades" by J. Havskov and K. Lieser. Thanks to our Sponsors GeoSIGGeoSIG, Sara Electronic and GaiaCode

#JustAnotherYear of ISC work: summary for data year 2023
👇
parametric data collected for 680193 events, of which 60125 have been reviewed and 43663 relocated by ISC using 8187246 phases!

What's going on with reported teleseismic pick in recent years? Jens Havskov and Kathrin Lieser investigate:
doi.org/10.31905/QEA...

Coming to the IAGA-IASPEI meeting in #Lisbon? Make sure you come and see our staff presenting the latest developments at the ISC 👇

Literature regarding the 1923 and 1952 #Kamchatka #earthquakes are available at these links:

1923-02-03: www.isc.ac.uk/cgi-bin/Form...

1952-11-04: www.isc.ac.uk/cgi-bin/Form...

Gallacher et al., 2025

🚨Seismic Ground Truth determination just got an upgrade!!! The Ground Truth Seismic Event Identification Criteria now includes the Cyclic Polygon Quotient (CPQ)-a new metric improving azimuthal station coverage analysis
Read more: seismica.library.mcgill.ca/article/view...

@iscseism.bsky.social

Catch up with the ISC latest news with the Newsletter:
www.isc.ac.uk/docs/newslet...

Contents include:
ISC contributing to World Stress Map;
Celebrating Robin Adams birthday;
RAS Award to D. A. Storchak;
New ISC members;
Papers published in Seismica;
Remembering Anthony Hughes.

Thanks @thegeonaut.bsky.social !

Random find in a "forgotten" filing cabinet, no clue about who wrote it or when. Any idea? Let us know...

Sadly, we announce the recent death of Dr Anthony Hughes, Director of the ISC between 1977 and 1997
www.isc.ac.uk/news/PDFs/AA...

The issue also features the "Regional Seismological Observation Network in Yakutia" by Albina Semyonovna Kulyandina, Rustam Mingulovich Tuktarov, Sergey Valentinovich Shibaev (doi.org/10.31905/SBL...).

Thanks to our Sponsors @geosig.bsky.social , Sara Electronic, GaiaCode for supporting the Summary

Volume 58, Issue I of the Summary of the ISC Bulletin is available at doi.org/10.31905/F3B...

The issue covers data analysis for the first six months of 2021, including Summary of Seismicity, Statistics of Collected Data, Overview of the ISC Bulletin, Leading Data Contributors.

Our first publication in @weareseismica.bsky.social
👇

A bit late but found it also here 👇

We are happy to announce that the ISC Director, Dr. D. A. Storchak, has received the Royal Astronomical Society Service Award in #Geophysics for "his longstanding dedication and support of the seismological community"

x.com/RoyalAstroSo...

Also "high resolution" locations make us cringe... anyway, that's why we also have the ground truth event list: www.isc.ac.uk/gtevents/

#JustAnotherYear of ISC work: summary for data year 2022
👇
parametric data collected for 628581 events, of which 55343 have been reviewed and 40912 relocated by ISC using 8021324 phases!

Hi, you can add us as well, thanks

Today we collect #seismological #data from about 150 agencies worldwide to produce several #data #products to serve researchers in different fields of #geoscience, see overview at www.isc.ac.uk/products/

The International Seismological Centre was set up in 1964 with UNESCO assistance to follow up the pioneering work of John Milne and Harold Jeffreys in collecting, archiving and processing of seismic bulletins and preparing and distributing the definitive summary of world seismicity, the ISC Bulletin

We welcome a large number of new followers (we know how you feel about X), it seems a good time to reintroduce ourselves on this platform 👇

Important Notification:
our mirror website isc-mirror.iris.washington.edu will no longer be available from 19 Nov 2024. Users are required to browse www.isc.ac.uk, and any use of the ISC webservices, including calls from obspy, require the updating of any hardcoded URL that points to the mirror site

Going to #ESC2024 General Assembly in #Corfu? This #conference is a great opportunity to catch up with the latest developments at the ISC as our staff will cover a variety of topics, see schedule of our oral and poster presentations

Introducing ISC Earthquake Toolbox Today’s guest blogger is Kostas Leptokaropoulos. Kostas is the MathWorks Geoscience Academic Discipline Manager, supporting Geoscience researchers and educators. In this blog, he describes his experie...

The new ISC #Earthquake toolbox for #MATLAB is now available via GIThub and the MathWorks file exchange. This allows ISC data to be parsed and used in the MATLAB environment.
For more details please see the blog below
blogs.mathworks.com/matlab/2024/...

Version 11 of the ISC-GEM Global Instrumental Earthquake Catalogue (1904-2020) has been released. This version marks the end of the 2nd year of the Further Improvement project. Download and further info at
www.isc.ac.uk/iscgem/downl...

fb.watch/rkNfRcw6_G/

Enjoyed every bit of the Perspective: "The Origins of the Generic Mapping Tools: From Table Tennis to Geoscience" by Paul Wessel agupubs.onlinelibrary.wiley.com/doi/10.1029/...