The irisws-fedcatalog web service returns selected time series channels from across multiple FDSN data centers. The combined catalog of channels is updated daily from each contributing data center.

This interface is primarily designed for discovery of data channels and subsequent requesting of time series using FDSN Web Service interfaces. The service is also capable of removing overlap from the channel list when the same channels are available from multiple data centers, avoiding the request and processing of duplicate data.

This interface is designed to support client-side federated data access.

FDSN Data Centers

A list of FDSN data centers (returns JSON) contributing to the combined catalog is available in JSON format and includes web service endpoints at each data center.

For data centers that wish to have their center included in the EarthScope Federator system see the new data centers section.