Articles | Volume 36, issue 5
Ann. Geophys., 36, 1335–1346, 2018
https://doi.org/10.5194/angeo-36-1335-2018
Ann. Geophys., 36, 1335–1346, 2018
https://doi.org/10.5194/angeo-36-1335-2018

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.

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ED: Publish subject to revisions (further review by editor and referees) (25 Jul 2018) by Minna Palmroth
AR by Anmin Tian on behalf of the Authors (28 Jul 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (08 Aug 2018) by Minna Palmroth
RR by Anonymous Referee #2 (15 Aug 2018)
RR by Anonymous Referee #1 (14 Sep 2018)
ED: Publish as is (14 Sep 2018) by Minna Palmroth
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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.