Contemporary analysis of Amundsen’s 120 years old auroral measurements at Gjøahavn carried out simultaneous with Scott’s recordings at Cape Armitage. These observatories are geomagnetically conjugate and located poleward of the auroral oval. All auroral events was associated with weak magnetic disturbances. Maximum activity occurred midwinter. Theta arcs, poleward moving substorm arcs, and transpolar arcs dominated the polar cap. These forms have special magnetic signatures.