| Title:
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On the cause of IMF By related mid- and low latitude magnetic disturbances |
| Type:
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Journal articleJournal article |
| Participant(s):
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Technical University of Denmark
Email:
Technical University of Denmark
Email:
Technical University of Denmark
Email:
Forfatter:
Moretto, T.
Technical University of Denmark
|
| Abstract:
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An analysis of the effect of the IMF By on near-Earth low and mid-latitude magnetic disturbances is presented. In particular the contribution from field-aligned currents ( FACs) connected to the polar regions is investigated. Based on statistically determined high-latitude FAC patterns for various Interplanetary Magnetic Field ( IMF) directions, we estimate the FAC contribution to the mid-and low latitude magnetic disturbance and its dependence on the IMF. The estimated perturbations are compared with observations from the ground and from the low-altitude polar orbiting satellite Oersted. It is found that the long-distance effect of the high-latitude FACs constitute the major source to IMF By and B-z related magnetic east-west disturbances at mid-and low latitudes. |
| Published:
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in journal: Geophysical Research Letters (ISSN: 0094-8276) (DOI: http://dx.doi.org/10.1029/2007GL030175), vol: 34, issue: 16, 2007 |
| DOI:
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