globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069225
Decay of mesoscale flux transfer events during quasi-continuous spatially extended reconnection at the magnetopause
Author: Hasegawa H.; Kitamura N.; Saito Y.; Nagai T.; Shinohara I.; Yokota S.; Pollock C.J.; Giles B.L.; Dorelli J.C.; Gershman D.J.; Avanov L.A.; Kreisler S.; Paterson W.R.; Chandler M.O.; Coffey V.; Burch J.L.; Torbert R.B.; Moore T.E.; Russell C.T.; Strangeway R.J.; Le G.; Oka M.; Phan T.D.; Lavraud B.; Zenitani S.; Hesse M.
Source Publication: Geophysical Research Letters
ISSN: 0094-9656
EISSN: 1944-9387
Publishing Year: 2016
Volume: 43, Issue:10
pages begin: 4755
pages end: 4762
Language: 英语
Keyword: flux transfer events ; magnetic flux rope ; magnetic reconnection ; magnetopause
Scopus Keyword: Fighter aircraft ; Magnetism ; Magnetopause ; Magnetosphere ; Spacecraft ; Equatorial planes ; Flux transfer events ; Interplanetary magnetic fields ; Ion inertial length ; Magnetic flux ropes ; Magnetic reconnections ; Magnetospheric multi scale ; Reconnection sites ; Interplanetary spacecraft ; amplitude ; flux measurement ; magnetic field ; magnetopause ; magnetosphere ; mesoscale motion ; solar wind ; spacecraft
English Abstract: We present observations on 2 October 2015 when the Geotail spacecraft, near the Earth's equatorial plane, and the Magnetospheric Multiscale (MMS) spacecraft, at midsouthern latitudes, simultaneously encountered southward jets from dayside magnetopause reconnection under southward interplanetary magnetic field conditions. The observations show that the equatorial reconnection site under modest solar wind Alfvén Mach number conditions remained active almost continuously for hours and, at the same time, extended over a wide range of local times (≥4 h). The reconnection jets expanded toward the magnetosphere with distance from the reconnection site. Geotail, closer to the reconnection site, occasionally encountered large-amplitude mesoscale flux transfer events (FTEs) with durations about or less than 1 min. However, MMS subsequently detected no or only smaller-amplitude corresponding FTE signatures. It is suggested that during quasi-continuous spatially extended reconnection, mesoscale FTEs decay as the jet spatially evolves over distances between the two spacecraft of ≥350 ion inertial lengths. ©2016. American Geophysical Union. All Rights Reserved.
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Document Type: 期刊论文
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Affiliation: Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan

Recommended Citation:
Hasegawa H.,Kitamura N.,Saito Y.,et al. Decay of mesoscale flux transfer events during quasi-continuous spatially extended reconnection at the magnetopause[J]. Geophysical Research Letters,2016-01-01,43(10).
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