Statistical study of ULF waves in the magnetotail by THEMIS observations
Shuai Zhang,Anmin Tian,Quanqi Shi,Hanlin Li,Alexander W. Degeling,I. Jonathan Rae,Colin Forsyth,Mengmeng Wang,Xiaochen Shen,Weijie Sun,Shichen Bai,Ruilong Guo,Huizi Wang,Andrew Fazakerley,Suiyan Fu,and Zuyin Pu
Shuai Zhang
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
State Key Laboratory of Space Weather, Chinese Academy of Sciences,
Beijing 100190, China
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Quanqi Shi
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Hanlin Li
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Xiaochen Shen
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Department of Climate and Space Sciences and Engineering, University
of Michigan, Ann Arbor, USA
Shichen Bai
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Institute of Geology and Geophysics Chinese Academy of Sciences,
Beijing 100029, China
Huizi Wang
Shandong Provincial Key Laboratory of Optical Astronomy and
Solar-Terrestrial Environment, School of Space Science and Physics, Shandong
University, Weihai, 264209, China
Andrew Fazakerley
University College London, Mullard Space Science Laboratory, Space and
Climate Physics, Dorking, UK
Suiyan Fu
School of Earth and Space Sciences, Peking University, Beijing 100871,
China
Zuyin Pu
School of Earth and Space Sciences, Peking University, Beijing 100871,
China
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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.
The features of ULF waves are statistically studied on the magnetotail stretched magnetic field...
