Key points are not available for this paper at this time.
During a magnetic storm on 6 August 1957, a rocket-borne magnetometer was launched near the coast of Greenland. The time and location of the flight and the magnetic measurements obtained provide evidence that the rocket entered the postulated sheet current flowing across the polar cap. An estimate is made of the magnitude of the detected current.
L. J. Cahill (Thu,) studied this question.