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| Titel |
The large-scale ionospheric transient current system response to upstream solar wind IMF Bz north-south and south-north turnings as seen by the WIND satellite and the full SuperMAG network of ground based magnetometers |
| VerfasserIn |
Joe Dods, Sandra Chapman, Jesper Gjerloev |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250139708
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| Publikation (Nr.) |
 EGU/EGU2017-3001.pdf |
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| Zusammenfassung |
| We characterise the response of the quiet-time (no substorms or storms) large scale
ionospheric convection system to north-south and south-north IMF turnings by using a
dynamical network of ground-based magnetometers. Canonical correlation between all pairs
of SuperMAG magnetometer stations in the northern hemisphere (MLat 50-82∘) is used to
establish the extent of near-simultaneous magnetic response between regions of MLT-MLat.
Parameters and maps that describe spatial-temporal correlation are used to characterise the
system and its response to the turnings aggregated over several hundred events. We find that
regions that experience large increases in correlation post-turning coincide with typical
locations of a two cell convection system and are influenced by the IMF By. The time
between the turnings reaching the magnetopause and a network response is found to be
∼8-10 minutes and correlation in the dayside occurs 2-8 mins before that in the nightside. |
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