International Federation of Digital Seismograph Networks

FDSN Services


FDSN Networks and Data Centers appreciate proper acknowledgment when anyone makes use of the data from their organizations. The following link provides information as to how various networks and Data Centers like to receive credit in publications or presentations.

Network and Data Center Citation Information

To enter Citation information for your network or data center, please fill out the online form

Network Operator/Data Center Citation Submission

FDSN has published recommendations for using Digital Object Identifiers (DOIs) as part of a network citation.

FDSN Web Services and Data Formats

FDSN Working Group III has defined standard web services for data access

FDSN Working Group II defines the data formats used for data exchange including SEED and FDSN StationXML

Information regarding X & Y Instrument Codes in SEED Channel Names

The FDSN approved two new instrument codes for SEED on April 20, 2010.

X & Y Instrument Codes (pdf)

FDSN Channel Instrument Code X

Derived or Generated Channel: Time series derived from observational data or entirely generated by a computer algorithm, as would be the case with synthetic seismograms.

See list of X instruments

FDSN Channel Instrument Code Y

Non-specific Instruments: The instrument code in SEED format covers most commonly used instruments that generate time series. For instruments not specifically covered by an existing instrument code the Y instrument code can be used.

See list of Y instruments

Current Network Codes

List of currently assigned FDSN Permanent Network Codes

FDSN Forms

If you are an operator of an observing network and wish to distribute data in FDSN SEED format, you must use an approved FDSN Network Code. You can apply for such a network code by selecting a link below.

If you are an official FDSN member representative you can enter your contact information at the following location:

FDSN Member Information Form

FDSN History

Learn about the history of the FDSN.

FDSN historical references