The FDSN StationXML schema and related documents are maintained by the International Federation of Digital Seismograph Networks (FDSN).
StationXML is a schema definition for representing the Standard for the Exchange of Earthquake (SEED) metadata in XML.
SEED and StationXML are maintained by FDSN Working Group II (WG-II).
Approved releases are available from http://www.fdsn.org/xml/station/.
Changes to the format are listed in the the Changes file
To propose changes to the schema a submitter must provide two things:
The procedure is as follows:
The change will be included in the next release of the schema.
For technical discussion of a potential change without creating a branch an issue may be created. The procedure for Working Group II, described above, must be followed for any changes to the schema.
Changes and issues should only be grouped together when logically related in order to streamline review and acceptance.
The vast majority of the StationXML 1.0 schema exists in the 1.1 schema, making most 1.0 documents compatible with the 1.1 schema. There are a few small exceptions where 1.0 elements were removed from 1.1, in one important case to avoid the specification of incorrect metadata.
An XSLT definition for StationXML 1.0 to 1.1 conversion exists to assist with the systematic conversion of version 1.0 documents to the version 1.1 schema. This is done by removing the elements no longer allowed in 1.1. A similar XSLT for version 1.0/1.1 to 1.2 also exists.