Characterization of ULF pulsations by THEMIS
Characterization of ULF pulsations by THEMIS
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DOI：
10.1029/2008gl036732
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发表时间：
2008-12
影响因子：
5.2
通讯作者：
T. Sarris;W. Liu;K. Kabin;X. Li;S. Elkington;R. Ergun;R. Rankin;V. Angelopoulos;J. Bonnell;K. Glassmeier;U. Auster
中科院分区：
文献类型：
--
作者：
T. Sarris;W. Liu;K. Kabin;X. Li;S. Elkington;R. Ergun;R. Rankin;V. Angelopoulos;J. Bonnell;K. Glassmeier;U. Auster
THEMIS五探测器星座于2007年2月17日发射，用于研究亚暴；然而，它的仪器和一些THEMIS探测器之间距离<1RE的对齐，特别是在其任务的第一阶段，为研究磁层中的超低频脉冲提供了独特的机会。在给出的实例研究中，电场和磁场的波动被识别为场线共振，并讨论了它们的振荡模式。探针之间的相位差计算允许估计波动的模式数。这些观测结果为验证各种场线共振模式的频率和极化的模型估计提供了一个极好的来源。
The THEMIS five‐probe constellation was launched in 17 February 2007 to study substorms; however its instrumentation and the alignment at distances <1RE among some of the THEMIS probes, particularly in the first period of its mission, provides unique opportunities to study ULF pulsations in the magnetosphere. In the case study presented, electric and magnetic field fluctuations are identified as field line resonances and their modes of oscillation are discussed. Phase‐difference calculations between probes allow estimates of the mode number of the fluctuations. These observations give an excellent source for the verification of model estimates of frequency and polarization of the various modes of field line resonances.