| The International Federation of Digital Seismograph
                    Networks Station Book contains information about stations
                    from all networks that contribute data (or intend to contribute
                    data) through the FDSN. Over the past few years so many digital
                     recording seismograph stations have been and are being installed
                     around the world that it is difficult for the data user
                    to  know exactly what information is available. The research
                    seismologist  needs to be aware of the type of data produced
                    at these stations  as well as information about seismometer
                    types, which components,  sample rates, sensitivities, dates
                    of operation, etc. This  online station book provides this
                    information. There are many networks that have contributed to this online
                    book; they include network operators from all over the world.
                    Each network has a unique network code and the information
                    is organized by this unique code. From time to time a station
                    may change network affiliation - in such a case, the station
                    is listed under each network for which it was/is affiliated
                    and the dates on which this station operated for that network. 
                  Updates to the Station Book are provided by the network operators.
                    Some of the "pages" in this online book are maintained
                    directly on-site of the network operator and the rest are
                    maintained at the IRIS
                    Data Management Center  (with direction from the network
                    operators) and therefore some minor differences in format may
                    be apparent but the information provided should be the same.
                    If you have any questions or comments about this Station Book
                    or the FDSN, please forward them to webmaster@iris.washington.edu .
                  Aren't sure what to look for? Use the search
                    tool. Alphabetical listing of all
                    stations by region 
                    
                      | List of Networks |  
                      | AS | Modified High Gain Long Period
                        Observatory (ASRO) |  
                      | AU | Australian Seismological Centre
                        (AU) |  
                      | BK | Berkeley Digital Seismic Network
                        (BDSN) |  
                      | CD | China Digital Seismic Network
                        (CDSN) |  
                      | CN | Canadian National Seismic Network
                        (CNSN) |  
                      | CZ | Czech Seismic Network (CZ) |  
                      | DK | Danish Seismological Network (DNK) |  
                      | DW | Digital World-Wide Standardized
                        Seismograph Network (DWWSSN) |  
                      | GE | GEOFON - Germany |  
                      | G | GEOSCOPE - France |  
                      | GR | German Regional Seismic Network
                        (GRSN) |  
                      | GT | Global Telemetered Seismic Network
                        (GTSN) |  
                      | H2 | Hawaii-2 Observatory |  
                      | HG | High-Gain Long Period Network
                        (HGLP) |  
                      | IC | IRIS/USGS/CDSN Seismic Network
                        (China) |  
                      | ID | Project IDA University of California
                        (IDA) |  
                      | II | IRIS/IDA Network |  
                      | IU | IRIS/USGS Network |  
                      | MN | MEDNET |  
                      | PS | Pacific21 (formerly POSEIDON) |  
                      | RS | Regional Seismic Test Network
                        (RSTN) |  
                      | SR | Seismic Research Observatory (SRO) |  
                      | TS | TERRAscope |  |