Atmospheric escape from the Earth during geomagnetic reversal

Olga O. Tsareva, Eduard M. Dubinin, Helmi V. Malova, Victor Yu. Popov, Lev M. Zelenyi

Abstract


We considered basic mechanisms of atmospheric particle acceleration and estimated the escape rates of ionospheric ions (H+ and O+) during the geomagnetic field reversal. It is assumed that during the reversal the Earth's magnetic field deviates from the current dipole configuration, and the quadrupole component dominates. The standoff distance of the quadrupole magnetosphere is about of 3 Earth's radii and therefore a magnetic shielding protects the atmosphere from sputtering and ion pickup but not from the polar and auroral winds.


Keywords


atmospheric ion escape; geomagnetic reversal; axisymmetric quadrupole

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References


DOI: https://doi.org/10.4401/ag-8354
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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X