Meso-scale auroral dynamics at magnetically conjugate points at Syowa Station, Antarctica and Iceland

Details Meso-scale auroral dynamics at magnetically conjugate points at Syowa Station, Antarctica and Iceland Meso-scale auroral dynamics at magnetically conjugate points at Syowa Station, Antarctica and Iceland

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa44a..06s&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SA44A-06

Physics

[2407] Ionosphere / Auroral Ionosphere, [2431] Ionosphere / Ionosphere/Magnetosphere Interactions, [2704] Magnetospheric Physics / Auroral Phenomena, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions

Scientific paper

Simultaneous observations of interhemispheric conjugate auroras provide a unique opportunity to examine how and where the invisible geomagnetic field lines connect the two hemispheres. Conjugate aurora should help us to infer the physical nature of auroral phenomena which occur between the magnetosphere and the ionosphere. Syowa Station in Antarctica and stations in Iceland form an ideal set of observatories to study geomagnetically conjugate optical auroras in the auroral zone. Conjugate auroral observations using all-sky TV cameras has been carried out since 1984 during the equinox periods. Using selected events, the dynamics of conjugate auroral features and the dynamic tracing of footprint of real geomagnetic conjugate point of Syowa, with temporal and spatial resolution of ~10 minute and ~10 km, was possible. Dynamic longitudinal displacement of conjugate point was strongly affected by the orientation of interplanetary magnetic field (IMF).

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