Statistical study of ULF waves in the magnetotail by THEMIS observations

Zhang, Shuai; Tian, Anmin; Shi, Quanqi; Li, Hanlin; Degeling, Alexander W.; Rae, I. Jonathan; Forsyth, Colin; Wang, Mengmeng; Shen, Xiaochen; Sun, Weijie; Bai, Shichen; Guo, Ruilong; Wang, Huizi; Fazakerley, Andrew; Fu, Suiyan; Pu, Zuyin

doi:https://doi.org/10.5194/angeo-36-1335-2018

Articles | Volume 36, issue 5

Ann. Geophys., 36, 1335–1346, 2018

https://doi.org/10.5194/angeo-36-1335-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Ann. Geophys., 36, 1335–1346, 2018

https://doi.org/10.5194/angeo-36-1335-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 36, issue 5

Regular paper 08 Oct 2018

Regular paper | 08 Oct 2018

Statistical study of ULF waves in the magnetotail by THEMIS observations

Shuai Zhang et al.

Data sets

THEMIS NASA http://themis.ssl.berkeley.edu

Space Physics Data Facility (SPDF) Goddard Space Flight Center (NASA) https://spdf.sci.gsfc.nasa.gov/

Short summary

The features of ULF waves are statistically studied on the magnetotail stretched magnetic field lines (8 RE < R < 32 RE) by using 8 years of THEMIS data. The occurrence rates of ULF waves are higher in the post-midnight region than pre-midnight region. The frequency decreases with increasing radial distance of 8–16 RE and could be explained by much more standing waves in this region than in the region of 16–32 RE. The wave frequency is higher after the substorm onset than before it.