Dayside magnetospheric ULF wave frequency modulated by a solar wind dynamic pressure negative impulse
Dayside magnetospheric ULF wave frequency modulated by a solar wind dynamic pressure negative impulse
复制标题
太阳风动压负脉冲调制的日侧磁层 ULF 波频率
DOI:
10.1002/2016ja023351
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发表时间:
2017-02
期刊:
影响因子:
--
通讯作者:
Z Y Pu
中科院分区:
文献类型:
--
作者:
M K Hudson;H Z Wang;S Y Fu;Z Y Pu
Ultralow frequency (ULF) waves play an important role in the transport of the solar wind energy to the magnetosphere. In this paper, we present a ULF wave event in the dayside magnetosphere which shows a sudden decrease in frequency from 3.1 to 2.3 mHz around 0756 UT on 11 January 2010, when a solar wind dynamic pressure drop (from ∼5 to ∼2 nPa) was observed simultaneously. The wave exits globally. The phase differences between electric and magnetic fields indicate that the compressional mode wave is standing before and after the wave frequency decrease. This result suggests that the ULF wave should be associated with a cavity mode and the frequency decrease might be induced by the change of the cavity size. A theoretical calculation was made to estimate the cavity mode frequency. The calculated wave frequency before/after the negative impulse is 3.8/2.6 mHz, which is consistent with the observations.
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影响因子:
--
作者:
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通讯作者:
C. Waters;Kazue Takahashi;Dong‐Hun Lee;B. Anderson
影响因子:
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作者:
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通讯作者:
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DOI:
10.1002/2013ja019551
发表时间:
2014-06
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
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作者:
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通讯作者:
Q. Shi;M. Hartinger;V. Angelopoulos;A. Tian;S. Fu;Q. Zong;J. Weygand;J. Raeder;Z. Pu
影响因子:
--
作者:
Z. Pu;M. Kivelson
通讯作者:
Z. Pu;M. Kivelson