International collaboration - Global Oscillation Network Group (GONG)

Abstract

Global Oscillation Network Group (GONG) is a community based International programme to study the solar interior through the use of the technique of heliseismology. The GONG programme was initiated at the National Solar Observatory, Tucson with the support of the National Science Foundation, USA. Helioseismology requires nearly continuous 24-hour observations of solar surface oscillations. After a thorough site evalution of 15 potential sites distributed almost evenly around the globe, six sites were selected for installation of identical GONG instruments. This network of 6 stations has started operating since October 1995.