International Federation of Digital Seismograph Networks

ID: Project IDA VLP Seismometer Network (UCSD/SIO/IGPP)

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FDSN Network Information

FDSN code ID Operated by Scripps Institution of Oceanography (SIO)
Network name Project IDA VLP Seismometer Network (UCSD/SIO/IGPP) (IDA) Deployment region Global
Start date June 14, 1976 End date July 10, 1995
Network Website
Short description

Network of digitally-recording VLP fedback vertical seismometers (modified from gravimeters) for the study of long-period surface waves and free oscillations

Further information in publication(s)

Agnew, D., J. Berger, R. Buland, W. Farrell, and F. Gilbert (1976). International Deployment of Accelerometers: a network for very long period seismology, EOS (Trans. Amer. Geophys. Union), 57, 180-188.

D. C. Agnew, J. Berger, W. E. Farrell, J. F. Gilbert, G. Masters, and D. Miller, (1986). Project IDA: A decade in review, Eos, Transactions American Geophysical Union, 67, 203-212, doi:

Citation Information

Digital Object Identifier (DOI)
Scripps Institution of Oceanography (1976): Project IDA VLP Seismometer  Network (UCSD/SIO/IGPP). International Federation of Digital Seismograph Networks. Other/Seismic Network. 10.7914/SN/ID

Data Access

Data Availability

Data available from IRISDMC (IRIS Data Management Center) using FDSN Web Services. See for more information including data access tools.

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Stations in this Network