Data Services Newsletter

Volume 19 : No 1 : Spring 2017

Catalan Seismic Network Data now being shared with IRIS

Jose Antonio Jara1, Tànit Frontera1, Josep Batlló1, Janira Irizarry1, Núria Romeu1, Sara Figueras1, Albert Macau1 and Antoni Roca1

1 Institut Cartogràfic i Geològic de Catalunya

Beginning in February 2017, data from stations of the Catalan Seismic Network (CA) are being made available in real time to the IRIS DMC and are openly available to anyone worldwide. The network is operated by the Institut Cartogràfic i Geològic de Catalunya (ICGC), in Barcelona (Spain). Once the new SeisComP3 server is fully deployed within the ICGC data center, the number of shared stations will increase. Information about the network can be found on the International Federation of Digital Seismograph Networks.

Since 1985, when the Geophysics and Seismology section of the Catalan Geological Survey installed the first permanent seismic station, the Catalan Seismic Network has considerably evolved. Currently, the Catalan Seismic Network consists of 21 broadband seismic stations and 19 accelerometers installed throughout Catalonia and Andorra, and it is still moving on. Stations installed in Catalonia are jointly operated by ICGC, Institut d’Estudis Catalans, Observatori de l’Ebre and Universitat Politècnica de Catalunya. Regarding stations located in Andorra, they are jointly operated by the ICGC and the Institut d’Estudis Andorrans.

The broadband stations are equipped with a broadband triaxial seismometer (STS-2, STS-2.5 or CMG3T), a 24 bit digitizer at 100 sps and a VSAT communication system transmitting continuous real-time data to the ICGC headquarters in Barcelona. Six of these stations are also equipped with a GNSS (Global Navigation Satellite System) antenna and receiver, providing valuable data for plate tectonics motion monitoring among many other services and applications.

The accelerometric stations consist of a self-contained ±1g force balance triaxial accelerometer and a 24 bit digitizer. Data are locally stored at 200 sps and continuously streamed in real-time through Internet to the ICGC datacenter.

Catalan Network
Beginning early in 2017 data from 4 stations of the Catalan Network have started sharing their data to the global community through the IRIS DMC.

by Tim Ahern (IRIS Data Management Center)