Institut Cartogràfic i Geològic de Catalunya ICGC

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Institut Cartogràfic i Geològic de Catalunya ICGC#

Catalonia has a long tradition of seismic recording starting early in the 20th Century. The first known seismic station started in 1905 at Ebre Observatory (EBR) founded by the Jesuits near Tortosa in southern Catalonia. In 1906, the Royal Academy of Sciences of Barcelona installed a second seismic station, still active, at the Fabra Observatory (FBR), near Barcelona. Both keep their seismograms and a large amount of complementary information such as station notebooks, seismic bulletins, and correspondence. Small observatories followed soon in Olot (1907) and Girona (1909) which were operational for a few years with only some scarce data having been preserved. An improved seismic network was installed by the regional government in 1985 and a few stations from the Spanish network and academic institutions were also added.

The Catalan seismic network is presently managed by the Institut Cartogràfic i Geològic de Catalunya (ICGC).

Stations#

Location

Code

Latitude

Longitude

Timespan

Components

Lleida

AVN

41.88157

0.75060

1987-2000

1

Cerdanya

CAD

42.33909

1.84002

1987-2001

1

Ebre

EBR

40.820167

0.49394

1905-

3

Roquetes

EROQ

40.82320

0.40883

1987-2003

3

Fabra

FBR

41.4183907

2.123961

1906-1996

3

Fontmartina

FONT

41.76118

2.43458

1989-2004

1

Montserrat

MRB

41.59388

1.83600

1987-1993

1

Olot

OLT

42.14320

2.47318

1985-2008

1

Sort

SOR

4 2.37442

1.13274

1993-2002

1

Vielha

VIH

42.62770

0.76879

1985-2005

1

Instrumentation#

Vincentini
Mainka
Hiller-Stuttgart Zenithal
Grablovitz
Geotech 6102A
Sprengnether S-5000 (V&H)

Instituto Geográifico Nacional (IGN) has an exhaustive catalog of old seismographs operated at Spanish observatory sites. The catalog describes instruments operating in Spain up to the 1960’s which recorded a graphical representation of ground motion.

A catalog card has been created for every seismograph. The information has been organized into 4 blocks:

  1. Name of instrument, location of the instrument, origin, and operational period.

  2. Physical characteristics of the instrument: component, mass, free period, damping, friction, magnification, type of record, and record speed and pen radius and/or galvanometer free period.

  3. Normalized magnification in poles and zeroes.

  4. Instrument status.

Catalog is available in pdf from the IGN web page [download] .
Last accessed 10 January 2022

Recording Medium#

smoked paper
photographic paper
ink paper
thermal paper

Data Availability#

Full resolution seismograms are available upon request.

no. available

format

dpi

color

70,000

tiff

600 or 1200

greyscale

Written documents have also been scanned at 300/400 dpi.

Each institution is in charge of physical preservation. See also:

More information about the archive can be found on the ICGC website.

Download data

Contact#

For more information about this collection, please contact: xarxasismica@icgc.cat

References#

Batlló, Josep and Peter Bormann; A Catalog of Old Spanish Seismographs (2000). Seismological Research Letters 71 (5): 570–582. doi: https://doi.org/10.1785/gssrl.71.5.570

Batlló, Josep, Jose Antonio Jara, Maite Merino, Germán Solé, and Judith Unamuno (2019). Present Status of the Project for Preserving Analogue Seismograms and Other Documents at Institut Cartogràfic i Geològic de Catalunya (ICGC), IUGG2019 General Assembly, 12 July 2019, Montreal Canada, JS067-466.

Batlló, Josep, Antonio Villaseñor, Jose Antonio Jara, Maite Merino, Germán Solé, and Judith Unamuno (2021). Digital Preservation of Analogue Seismograms and Other Documents at Institut Cartogràfic i Geològic de Catalunya (ICGC), IAGA-IASPEI 2021, 21-27 August 2021, Hyderabad, India, 101.

ICGC website. https://www.icgc.cat/en/Public-Administration-and-Enterprises/Services/Recorded-earthquakes-and-seismic-information/Seismic-information-and-maps-collections/Analog-seismograms. Last accessed 10 January 2022.

Merino, Maria Teresa, Batlló, Josep, Jose Antonio Jara, Antonio Villaseñor,and Judith Unamuno (2021). Observatori Fabra available data and documentation, IAGA-IASPEI 2021, 21-27 August 2021, Hyderabad, India, 103.

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