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1972•Journal of Geophysical Research AtmospheresOpen access

Critical component of the interplanetary magnetic field responsible for large geomagnetic effects in the polar cap

E. Friis‐Christensen, K. Lassen, J. Wilhjelm, John M. Wilcox, W. D. González, D. S. Colburn

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Abstract

An observed influence of the interplanetary magnetic-sector structure on the geomagnetic variations in the polar cap appears to be due to the component of the interplanetary magnetic field near the ecliptic perpendicular to the earth-sun direction. This suggests that the observed effect on the ground originates in the front of the magnetosphere.

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An observed influence of the interplanetary magnetic-sector structure on the geomagnetic variations in the polar cap appears to be due to the component of the interplanetary magnetic field near the ecliptic perpendicular to the earth-sun direction. This suggests that the observed effect on the ground originates in the front of the magnetosphere.

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Available abstract

An observed influence of the interplanetary magnetic-sector structure on the geomagnetic variations in the polar cap appears to be due to the component of the interplanetary magnetic field near the ecliptic perpendicular to the earth-sun direction. This suggests that the observed effect on the ground originates in the front of the magnetosphere.

Key concepts: Earth's magnetic field, Interplanetary magnetic field, Magnetosphere, Geophysics, Physics, Ionospheric dynamo region, Polar, Ecliptic

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