The ISGI is located at the "Centre d'études des
Environnements Terrestre et Planétaires", at Saint Maur, France,
since the IUGG XIX General Assembly (Vancouver, 1987).
From that time, it is under the
responsibility of M. Menvielle (Director, CETP), jointly with A.
Berthelier (Editor, CETP) until her death in 1997. The basic activities
of ISGI, and of ISGI Publication Office are to prepare and circulate
magnetic indices and other geomagnetic data, based on the report of
magnetic observatories distributed all over the planet.
ISGI contributed to establish a policy of dissemination of
indices through electronic networks which prevents any confusing
situation. It routinely ensures a quasi real time derivation and
dissemination of reliable quick-look values of IAGA geomagnetic indices
through the ISGI website.
The ISGI Web site is developed in the frame of the CETP homepage, with
mirror link with each ISGI Collaborating Institute Web homepage. The
ISGI Web site makes also possible to have easily access to descriptions
of IAGA indices, and to all the available data sets.