International Federation of Digital Seismograph Networks
Encyclopedia
The International Federation of Digital Seismograph Networks, or FDSN, is a global organization consisting of groups that install and maintain digital
, broadband
seismic recorders
either nationally or globally. Any organizations operating more than one broadband station is eligible for membership. Members agree to coordinate station siting and provide free and open data
. This cooperation helps scientists all over the world to further the advancement of earth science
and particularly the study of global seismic activity.
FDSN is a participant in the Global Earth Observation System of Systems, or GEOSS.
waveform
data and related parametric information. The Standard for Exchange of Earthquake Data (SEED) format is the result of that effort.
Digital
A digital system is a data technology that uses discrete values. By contrast, non-digital systems use a continuous range of values to represent information...
, broadband
Broadband
The term broadband refers to a telecommunications signal or device of greater bandwidth, in some sense, than another standard or usual signal or device . Different criteria for "broad" have been applied in different contexts and at different times...
seismic recorders
Seismometer
Seismometers are instruments that measure motions of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions, and other seismic sources...
either nationally or globally. Any organizations operating more than one broadband station is eligible for membership. Members agree to coordinate station siting and provide free and open data
Open Data
Open data is the idea that certain data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control. The goals of the open data movement are similar to those of other "Open" movements such as open source, open...
. This cooperation helps scientists all over the world to further the advancement of earth science
Earth science
Earth science is an all-embracing term for the sciences related to the planet Earth. It is arguably a special case in planetary science, the Earth being the only known life-bearing planet. There are both reductionist and holistic approaches to Earth sciences...
and particularly the study of global seismic activity.
FDSN is a participant in the Global Earth Observation System of Systems, or GEOSS.
Data specification
The FDSN goals related to station siting and instrumentation are to provide stations with good geographic distribution, recording data with 24 bits of resolution in continuous time series with at least a 20 sample per second sampling rate. The FDSN was also instrumental in development of a universal standard for distribution of broadbandBroadband
The term broadband refers to a telecommunications signal or device of greater bandwidth, in some sense, than another standard or usual signal or device . Different criteria for "broad" have been applied in different contexts and at different times...
waveform
Waveform
Waveform means the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.In many cases the medium in which the wave is being propagated does not permit a direct visual image of the form. In these cases, the term 'waveform' refers to the shape of a graph...
data and related parametric information. The Standard for Exchange of Earthquake Data (SEED) format is the result of that effort.
External links
- FDSN — Official website
- SEED, Chapter 1 — the Standard for the Exchange of Earthquake Data manual