Bursty escape fluxes in plasma sheets of Mars and Venus
Bursty escape fluxes in plasma sheets of Mars and Venus
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DOI：
10.1029/2011gl049883
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发表时间：
2012-01
影响因子：
5.2
通讯作者：
E. Dubinin;M. Fraenz;J. Woch;T. Zhang;J. Wei;A. Fedorov;S. Barabash;R. Lundin
中科院分区：
文献类型：
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作者：
E. Dubinin;M. Fraenz;J. Woch;T. Zhang;J. Wei;A. Fedorov;S. Barabash;R. Lundin
由火星快车号航天器上的ASPERA - 3和金星快车号上几乎相同的等离子体仪器所进行的对火星和金星等离子体片中等离子体的高分辨率测量，揭示了逃逸行星离子的爆发性通量的相似特征。一次爆发持续约1 - 2分钟。金星快车号上同时进行的磁场测量表明，这些类似爆发的特征是由于等离子体片的摆动运动而产生的。它们的出现可能与在等离子体片表面传播且由磁尾中的重联所激发的大振幅波有关。
High resolution measurements of plasma in the plasma sheets of Mars and Venus performed by almost identical plasma instruments ASPERA‐3 on the Mars Express spacecraft and ASPERA‐4 on Venus Express reveal similar features of bursty fluxes of escaping planetary ions. A period of bursts lasts about 1–2 min. Simultaneous magnetic field measurements on Venus Express show that these burst‐like features arise due to flapping motions of the plasma sheet. Their occurrence can be related to large‐amplitude waves propagating on the plasma sheet surface and launched by reconnection in the magnetic tails.