Local Seismic Network REYKJANET

REYKJANET  local seismic network is distributed around Reykjanes Peninsula in south-west Iceland. Earthquake swarms, as well as typical mainshock-aftershock sequences, occur similarly to the West Bohemia region in this region near the Mid-Atlantic Ridge. REYKJANET seismic stations store data on SD cards which are manually downloaded and sent to IG for further processing several times a year. The seismic network is operated by the Institute of Geophysics and the Institute of Rock Structure and Mechanics of the CAS. REYKJANET seismic network was deployed in 2013 for the project GAČR P210/12/2336, which required data from a dense seismic network. In 2016, the network was upgraded – high-frequency seismometers were replaced by broadband ones. The network consists of 15 stations covering an area of about 60 km x 20 km. Each station is equipped with the Guralp CMG 40-T seismometer (eigen period T0=30s) placed in shallow-burried container on a concrete pillar and with Nanometrics Centaur digitizers. All stations measure continuously with sampling frequency of 250Hz. Being deployed in remote and uninhabited places, the stations must be powered from batterries that are recharged by solar panels and wind generators. The operation of the network is assisted by Iceland Geosurvey (ÍSOR) in the frame of Memorandum of Understanding. REYKJANET is the only local seismic network of the Czech Academy of Sciences operated abroad.

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