Magnetospheric flux transport in the Dungey cycle during 2010
Magnetospheric flux transport in the Dungey cycle during 2010
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2010 年邓吉循环中的磁层通量传输
DOI:
10.1002/essoar.10503601.1
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Milan S
中科院分区:
文献类型:
--
作者:
Milan S
We quantify the contributions of different convection states to the magnetic flux throughput of the magnetosphere during 2010. To do this we provide a continuous classification of convection state for the duration of 2010 based upon observations of the solar wind and interplanetary magnetic field, geomagnetic indices, and field-aligned currents measured by the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE). Convection states are defined as 1) quiet and 2) weak activity, substorm 3) growth, 4) expansion, and 5) recovery phases, 6) substorm driven phase (when relatively steady magnetospheric convection occurs), 7) recovery bays (when recovery phase is accompanied by a negative excursion of the AL electrojet index), and 8) periods of multiple intensifications (storm-time periods when continuous short-period AL activity occur). The magnetosphere is quiet for 46% of the time, when very little convection takes place. The majority of convection occurs during growth and driven phases (21% and 38%, respectively, of open magnetic flux accumulation by dayside reconnection). We discuss these results in the context of the expanding/contracting polar cap model of convection, and describe a framework within which isolated substorms and disturbances during periods of more continuous solar wind-magnetosphere driving can be understood.
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DOI:
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发表时间:
1979
期刊:
影响因子:
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作者:
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DOI:
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发表时间:
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期刊:
Journal of Geophysical Research: Space Physics
影响因子:
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DOI:
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发表时间:
2013
期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2014
期刊:
影响因子:
--
作者:
A. DeJong
通讯作者:
A. DeJong
DOI:
10.1002/jgra.50393
发表时间:
2013
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
作者:
S. Milan
通讯作者:
S. Milan