Analog seismograms of the Catalan Seismic Network
Except for EBR and FBR stations, property of Observatori de l'Ebre and Observatori Fabra, respectively, the Catalan Seismic Network started in 1985.
Until 2008 the seismic stations were equipped with vertical short period sensors with analog recording. Ground motion was telemetered or cabled from field sensor to continuous recording drums.
Sketch of a seismic station with analog recording
Specific information about the network deployment can be found on the published Seismic Bulletins. Since 1999 new Broad Band stations with satellite transmission were deployed; but some stations continued with analog recording for some years.
Seismograms were recorded on thermic paper and records were replaced daily between 7:00 and 10:00 in the morning. Exceptionally some seismograms contain 48 hours of seismic recording.
Due to the fragility of the thermic paper and with the objective to preserve them for the future, all seismograms have been scanned at 1200dpi density in grey scale.
Â
Analog seismic recorder drum
The whole series of records for the 10 stations showed on the map are available as raster images.
Map showing the analog recording stations of the Catalan Seismic Network
A list of existing records for each station is available and can be search from the next table.
Station | Code | Period |
|---|---|---|
AVN | June 1987 - October 2000 | |
CAD | November 1987 - May 2001 | |
EBR | July 1905 - Nowadays | |
EROQ | January 1988 - July 1993 January 2023 - Nowadays | |
FBR | 1906 - December 1996 | |
FONT | May 1989 - May 2004 | |
MRB | July 1987 - May 1993 | |
OLT | December 1985 - December 2008 | |
SOR | July 1993 - June 2002 | |
VIH | November 1985 - May 2005 |
4 multimedia
Seismic record of Sort (SOR) analog seismic station for 15-16 May 1995. The record of earthquakes ocurred off the Tarragona coast are observed.
Seismic record of Sort (SOR) analog seismic station for 15-16 May 1995. The record of earthquakes ocurred off the Tarragona coast are observed.
Seismic record of Les Avellanes (AVN) analog seismic station for 20-21 May 1992. A record of a teleseism is observed at the top and at the bottom the record of a nuclear explosion in China.
Seismic record of Olot (OLT) analog seismic station for 13-14 Setember 1988. It is disturbed by seismic noise due to wind.
Contact
