Momentum transfer at the high-latitude magnetopause and boundary layers
How and where momentum is transferred from the solar wind to the magnetosphere and ionosphere is one of the key problems of space physics. Much of this transfer occurs through direct reconnection on the dayside, particularly when the IMF is southward. However, momentum transfer also occurs at hi...
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Copernicus Publications
2008-08-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/26/2449/2008/angeo-26-2449-2008.pdf |
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doaj-41bf0318c1664542a7432163d3abadbf2020-11-25T00:29:55ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762008-08-01262449245810.5194/angeo-26-2449-2008Momentum transfer at the high-latitude magnetopause and boundary layersE. J. Lund0C. J. Farrugia1P. E. Sandholt2Space Science Center, University of New Hampshire, Durham, New Hampshire, USASpace Science Center, University of New Hampshire, Durham, New Hampshire, USADepartment of Physics, University of Oslo, Oslo, NorwayHow and where momentum is transferred from the solar wind to the magnetosphere and ionosphere is one of the key problems of space physics. Much of this transfer occurs through direct reconnection on the dayside, particularly when the IMF is southward. However, momentum transfer also occurs at higher latitudes via Alfvén waves on old open field lines, even for southward IMF. This momentum is transferred to the ionosphere via field-aligned currents (FACs), and the flow channel associated with these FACs produces a Hall current which causes magnetic variations at high latitude (the Svalgaard-Mansurov effect). We show examples where such momentum transfer is observed with multiple spacecraft and ground-based instruments.https://www.ann-geophys.net/26/2449/2008/angeo-26-2449-2008.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
E. J. Lund C. J. Farrugia P. E. Sandholt |
| spellingShingle |
E. J. Lund C. J. Farrugia P. E. Sandholt Momentum transfer at the high-latitude magnetopause and boundary layers Annales Geophysicae |
| author_facet |
E. J. Lund C. J. Farrugia P. E. Sandholt |
| author_sort |
E. J. Lund |
| title |
Momentum transfer at the high-latitude magnetopause and boundary layers |
| title_short |
Momentum transfer at the high-latitude magnetopause and boundary layers |
| title_full |
Momentum transfer at the high-latitude magnetopause and boundary layers |
| title_fullStr |
Momentum transfer at the high-latitude magnetopause and boundary layers |
| title_full_unstemmed |
Momentum transfer at the high-latitude magnetopause and boundary layers |
| title_sort |
momentum transfer at the high-latitude magnetopause and boundary layers |
| publisher |
Copernicus Publications |
| series |
Annales Geophysicae |
| issn |
0992-7689 1432-0576 |
| publishDate |
2008-08-01 |
| description |
How and where momentum is transferred from the solar wind to the
magnetosphere and ionosphere is one of the key problems of space physics.
Much of this transfer occurs through direct reconnection on the dayside,
particularly when the IMF is southward. However, momentum transfer also
occurs at higher latitudes via Alfvén waves on old open field lines, even
for southward IMF. This momentum is transferred to the ionosphere via
field-aligned currents (FACs), and the flow channel associated with these
FACs produces a Hall current which causes magnetic variations at high
latitude (the Svalgaard-Mansurov effect). We show examples where such
momentum transfer is observed with multiple spacecraft and ground-based
instruments. |
| url |
https://www.ann-geophys.net/26/2449/2008/angeo-26-2449-2008.pdf |
| work_keys_str_mv |
AT ejlund momentumtransferatthehighlatitudemagnetopauseandboundarylayers AT cjfarrugia momentumtransferatthehighlatitudemagnetopauseandboundarylayers AT pesandholt momentumtransferatthehighlatitudemagnetopauseandboundarylayers |
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1725329007979790336 |