Guest Editorial

Abstract

The International Union of Geodesy and Geophysics (IUGG) is an international non-governmental organization dedicated to the scientific study of the Earth and its space environment using geophysical and geodetic techniques.

IUGG was established in 1919 by 9 founding member countries to promote activities of 10 alreadyexisting international scientific societies dealing with geodesy, terrestrial magnetism and electricity, meteorology, physical oceanography, seismology, and volcanology. During the period 1919 to 1939 the number of member countries increased to 35.