Resolution No.12 (1963): Publication of the Dst on a regular basis

The IAGA recognises that for the studies of the secular variations, magnetic storms, Sq, and other geomagnetic variations the determination of DST is of great importance and that in space research and in the studies of the relationships between geomagnetic variations and other geophysical phenomena, data giving the DST variation are frequently required. The IAGA, therefore, recommends the publication of the hourly values and a graphical representation of the equatorial Dst variation on a regular basis with shortest possible delay from the time of observation and invites the cooperation of interested organisations.