International Union of Geodesy and Geophysics (IUGG)
The IERS was established in 1987 by the International Astronomical Union and the International Union of Geodesy and Geophysics.
Web site: http://www.iugg.org/
IAG / IUGG Representative to the IERS Directing Board:
Thomas Herring
Ex officio IERS Associate Member:
IUGG General Secretary: Alexander Rudloff