Resolution No.13 (1973): Ground magnetometer chains during the IMS

IAGA notes that the coming International Magnetospheric Study requires extensive chains of ground (magnetic) stations for use in conjunction with satellite measurements. The IAGA strongly recommends that its member nations fill gaps in the existing networks where these fall within their territories. Where feasible, IAGA urges data be gathered and distributed with minimum delay to aid in the coordination of ground, balloon, and rocket experiments.