Metadata and Data Archival
Station names within Australia are usually chosen by their closest township. The codes that we use require a maximum of four characters and must not be used anywhere else in the world. The International Seismological Centre keeps records of all station names and locations and registers them in an International Registry of Seismograph Stations.
Metadata is recorded for each station and includes:
- Station Name and Code
- Seismic Network Affiliation
- Latitude, longitude and elevation
- Station on-date and off-date
- Equipment Type
- Equipment on-date and off-date
- Equipment calibration parameters
- Relevant comments such as orientation or local contact details.
Station history must be recorded and linked to related data to enable accurate geophysical analysis of archived data.
Data storage has evolved as the media for which it can be stored on has also evolved. The amount of data received in a day has increased one hundred times over although the physical size has decreased by the same amount.
At Geoscience Australia, digitisation of analogue paper records and conglomeration of day tapes into year tapes has increased the accessibility and scientific value of historical records.
Data archives are stored on-site and internationally and can be easily downloaded from international data centres such as the Incorporated Research Institutions for Seismology (IRIS) and the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO).Metadata records are regularly checked for accuracy and updates are made at each centre to eliminate problems with inaccurate records.