Resolution No.13 (1977): Thanks to BAS for southern hemispheric magnetic observations

IAGA, considering the scarcity of magnetic observatories in the Southern Hemisphere and hence the importance of the British Antarctic Survey observatories for monitoring planetary magnetic activity and secular change, and also for studying Sq variations, magnetospheric phenomena and conjugate relationships, thanks the BAS for maintaining their observatories and urges that every effort be made to continue this service which is of importance to the scientific community.