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Reconnection event at the dayside magnetopause on January 10, 1997
Author(s) -
Nakamura Masato,
Seki Kanako,
Kawano Hideaki,
Obara Takahiro,
Mukai Toshifumi
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl00135
Subject(s) - magnetopause , magnetosheath , magnetic reconnection , substorm , physics , magnetosphere , geophysics , solar wind , geosynchronous orbit , field line , plasma , astronomy , satellite , quantum mechanics
Geotail was at the magnetopause near the sub‐solar point when the magnetic cloud struck the earth's magnetosphere on January 10, 1997. Reeonnection between the southward IMF and the magnetospheric field lines occurred at the dayside magnetopause as observed by Geotail. The signatures of the reconnection were, i) accelerated plasma flow from the reconnection site which reached up to 500km/s, ii) ion heating through the reconnection process, and iii) a velocity filter effect seen in the ion distribution function in the magnetosheath boundary layer. This reconnection may be related to the large substorm onset observed at geosynchronous orbit.