Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes

We report on the effort of the International Seismological Centre (ISC, www.isc.ac.uk) to digitise station measurements for earthquakes as well as other types of seismic events that are currently listed in the ISC database without station data. The association of instrumental measurements to a seism...

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Main Authors: Di Giacomo, Domenico, Storchak, Dmitry A.
Format: Article
Language:English
Published: Académie des sciences 2023-01-01
Series:Comptes Rendus. Géoscience
Subjects:
Online Access:https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.185/
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author Di Giacomo, Domenico
Storchak, Dmitry A.
author_facet Di Giacomo, Domenico
Storchak, Dmitry A.
author_sort Di Giacomo, Domenico
collection DOAJ
description We report on the effort of the International Seismological Centre (ISC, www.isc.ac.uk) to digitise station measurements for earthquakes as well as other types of seismic events that are currently listed in the ISC database without station data. The association of instrumental measurements to a seismic event is fundamental to verify its occurrence and it facilitates, when possible, its hypocentre relocation. We search for relevant station data in the Bureau Central de l’Association Internationale de Sismologie (BCIS). The BCIS bulletins were produced at the same time of the International Seismological Summary (ISS) but they appear to list more events with data than the ISS from the 1950s. Unfortunately, BCIS bulletins have not been digitised in a systematic way. We show that during the period going from the mid-1950s up to 1963 the BCIS is a unique source of station data that allowed us to verify thousands of earthquakes worldwide and significantly expand the global record of seismicity in those years. The data digitised in this work will play a key role in future works regarding earthquakes in the pre-digital era.
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spelling doaj.art-c18ac40901844374ad325073393308ca2023-10-24T14:24:49ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252023-01-01355G1233410.5802/crgeos.18510.5802/crgeos.185Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakesDi Giacomo, Domenico0https://orcid.org/0000-0001-8472-8979Storchak, Dmitry A.1https://orcid.org/0000-0002-1481-801XInternational Seismological Centre, Pipers Lane, Thatcham, Berkshire, RG19 4NS, UKInternational Seismological Centre, Pipers Lane, Thatcham, Berkshire, RG19 4NS, UKWe report on the effort of the International Seismological Centre (ISC, www.isc.ac.uk) to digitise station measurements for earthquakes as well as other types of seismic events that are currently listed in the ISC database without station data. The association of instrumental measurements to a seismic event is fundamental to verify its occurrence and it facilitates, when possible, its hypocentre relocation. We search for relevant station data in the Bureau Central de l’Association Internationale de Sismologie (BCIS). The BCIS bulletins were produced at the same time of the International Seismological Summary (ISS) but they appear to list more events with data than the ISS from the 1950s. Unfortunately, BCIS bulletins have not been digitised in a systematic way. We show that during the period going from the mid-1950s up to 1963 the BCIS is a unique source of station data that allowed us to verify thousands of earthquakes worldwide and significantly expand the global record of seismicity in those years. The data digitised in this work will play a key role in future works regarding earthquakes in the pre-digital era.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.185/DigitisationPhase arrival timesSeismic stationsEarthquake parametersBulletins
spellingShingle Di Giacomo, Domenico
Storchak, Dmitry A.
Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
Comptes Rendus. Géoscience
Digitisation
Phase arrival times
Seismic stations
Earthquake parameters
Bulletins
title Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
title_full Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
title_fullStr Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
title_full_unstemmed Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
title_short Digitization of BCIS bulletins and the ISC quest to verify pre-digital earthquakes
title_sort digitization of bcis bulletins and the isc quest to verify pre digital earthquakes
topic Digitisation
Phase arrival times
Seismic stations
Earthquake parameters
Bulletins
url https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.185/
work_keys_str_mv AT digiacomodomenico digitizationofbcisbulletinsandtheiscquesttoverifypredigitalearthquakes
AT storchakdmitrya digitizationofbcisbulletinsandtheiscquesttoverifypredigitalearthquakes