GEOFON HE Seismic Network

The HE Seismic Network

: Legend: Current stations: open access | restricted. Former stations: open access | restricted.

Network list

Cite as:: Institute of Seismology, University of Helsinki (1980): The Finnish National Seismic Network. GFZ Data Services. Other/Seismic Network. doi:10.14470/UR044600.
Network code:: HE
Type:: Permanent
Data time range^‡:: 1980–
Terms of use:: Unknown; please acknowledge PIs
Institution(s):: Univ. Helsinki
Creator(s):: Institute of Seismology, University of Helsinki (LEGACY)
Description*:: Finnish National Seismic Network
Abstract:: The Institute of Seismology, University of Helsinki (ISUH) was founded in 1961 as a response to the growing public concern for environmental hazards caused by nuclear weapon testing. Since then ISUH has been responsible for seismic monitoring in Finland. The current mandate covers government regulator duties in seismic hazard mitigation and nuclear test ban treaty verification, observatory activities and operation of the Finnish National Seismic Network (FNSN) as well as research and teaching of seismology at the University of Helsinki. The first seismograph station of Finland was installed at the premises of the Department of Physics, University of Helsinki in 1924. However, the mechanical Mainka seismographs had low magnification and thus the recordings were of little practical value for the study of local seismicity. The first short-period seismographs were set up between 1956 and 1963. The next significant upgrade of FNSN occurred during the late 1970’s when digital tripartite arrays in southern and central Finland became fully operational, allowing for systematic use of instrumental detection, location and magnitude determination methods. By the end of the 1990’s, the entire network was operating using digital telemetric or dial-up methods. The FNSN has expanded significantly during the 21st Century. It comprises now 36 permanent stations. Most of the stations have Streckeisen STS-2, Nanometrics Trillium (Compact/P/PA/QA) or Guralp CMG-3T broad band sensors. Some Teledyne-Geotech S13/GS13 short period sensors are also in use. Data acquisition systems are a combination of Earth Data PS6-24 digitizers and PC with Seiscomp/Seedlink software or Nanometrics Centaurs. The stations are connected to the ISUH with Seedlink via Internet and provide continuous waveform data at 40 Hz (array) or 100-250 Hz sampling frequency. Further information about instrumentation can be found at the Institute’s web site (www.seismo.helsinki.fi). Waveform data is available from the GEOFON data centre.

* Description is taken from seismic metadata, and may not match the preferred title for citations.
DataCite metadata:: HTML | JSON | XML | INSPIRE
Seismic metadata:: fdsnws-station
Network KML file:

To retrieve waveform data and metadata (including instrument responses) for this and other seismic networks, see here.

Extended Network Information for network HE _[hide/show]

Creator(s):: Institute of Seismology, University of Helsinki
Title:: The Finnish National Seismic Network
Publisher:: GFZ Data Services
Resource Type:: Other/Seismic Network
Network DOI:: doi:10.14470/UR044600
Related Reference(s):: (None provided)
Place(s):: Finland
Subject(s)^a:: Monitoring system ; Seismological stations
GCMD keyword(s):: Earthquakes Geophysical stations/networks Seismological stations Seismometers
Funding Reference(s):: University of Helsinki