Global Distribution of ULF Waves During Magnetic Storms: Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation

Naoko Takahashi, Kanako Seki, Mariko Teramoto, Mei Ching Fok, Yihua Zheng, Ayako Matsuoka, Nana Higashio, Kazuo Shiokawa, Dmitry Baishev, Akimasa Yoshikawa, Tsutomu Nagatsuma

Research output: Contribution to journalArticle

Abstract

During 26–29 March 2017 magnetic storm, the Arase satellite observed typical ultra low frequency (ULF) waves and acceleration of relativistic electrons. We simulate the global distribution of these ULF waves using CRCM with BATSRUS global magnetospheric magnetohydrodynamic model. The simulation can qualitatively reproduce the ULF waves observed by Arase at frequencies of 2–3 mHz. However, the simulated ULF wave power is 1–2 orders of magnitude smaller than the observation. The simulated ULF wave activity has a good correlation with the solar-wind dynamic pressure variation, while the wave activity on the ground is enhanced even during the recovery phase, possibly due to the Kelvin-Helmholtz instability and/or substorms. We also study the 3–6 April 2017 magnetic storm, in which low ULF wave activity and weak acceleration of relativistic electrons are seen. We suggest that the existence of ULF waves plays an important role in accelerating electrons up to relativistic energies.

Original languageEnglish
Pages (from-to)9390-9397
Number of pages8
JournalGeophysical Research Letters
Volume45
Issue number18
DOIs
Publication statusPublished - Sep 28 2018

Fingerprint

extremely low frequencies
magnetic storms
simulation
electron
wave power
Kelvin-Helmholtz instability
wind pressure
electrons
dynamic pressure
distribution
comparison
magnetohydrodynamics
solar wind
recovery
low frequencies

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Global Distribution of ULF Waves During Magnetic Storms : Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation. / Takahashi, Naoko; Seki, Kanako; Teramoto, Mariko; Fok, Mei Ching; Zheng, Yihua; Matsuoka, Ayako; Higashio, Nana; Shiokawa, Kazuo; Baishev, Dmitry; Yoshikawa, Akimasa; Nagatsuma, Tsutomu.

In: Geophysical Research Letters, Vol. 45, No. 18, 28.09.2018, p. 9390-9397.

Research output: Contribution to journalArticle

Takahashi, N, Seki, K, Teramoto, M, Fok, MC, Zheng, Y, Matsuoka, A, Higashio, N, Shiokawa, K, Baishev, D, Yoshikawa, A & Nagatsuma, T 2018, 'Global Distribution of ULF Waves During Magnetic Storms: Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation', Geophysical Research Letters, vol. 45, no. 18, pp. 9390-9397. https://doi.org/10.1029/2018GL078857
Takahashi, Naoko ; Seki, Kanako ; Teramoto, Mariko ; Fok, Mei Ching ; Zheng, Yihua ; Matsuoka, Ayako ; Higashio, Nana ; Shiokawa, Kazuo ; Baishev, Dmitry ; Yoshikawa, Akimasa ; Nagatsuma, Tsutomu. / Global Distribution of ULF Waves During Magnetic Storms : Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation. In: Geophysical Research Letters. 2018 ; Vol. 45, No. 18. pp. 9390-9397.
@article{13169752d4424bb68b4c258ec2317a74,
title = "Global Distribution of ULF Waves During Magnetic Storms: Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation",
abstract = "During 26–29 March 2017 magnetic storm, the Arase satellite observed typical ultra low frequency (ULF) waves and acceleration of relativistic electrons. We simulate the global distribution of these ULF waves using CRCM with BATSRUS global magnetospheric magnetohydrodynamic model. The simulation can qualitatively reproduce the ULF waves observed by Arase at frequencies of 2–3 mHz. However, the simulated ULF wave power is 1–2 orders of magnitude smaller than the observation. The simulated ULF wave activity has a good correlation with the solar-wind dynamic pressure variation, while the wave activity on the ground is enhanced even during the recovery phase, possibly due to the Kelvin-Helmholtz instability and/or substorms. We also study the 3–6 April 2017 magnetic storm, in which low ULF wave activity and weak acceleration of relativistic electrons are seen. We suggest that the existence of ULF waves plays an important role in accelerating electrons up to relativistic energies.",
author = "Naoko Takahashi and Kanako Seki and Mariko Teramoto and Fok, {Mei Ching} and Yihua Zheng and Ayako Matsuoka and Nana Higashio and Kazuo Shiokawa and Dmitry Baishev and Akimasa Yoshikawa and Tsutomu Nagatsuma",
year = "2018",
month = "9",
day = "28",
doi = "10.1029/2018GL078857",
language = "English",
volume = "45",
pages = "9390--9397",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "18",

}

TY - JOUR

T1 - Global Distribution of ULF Waves During Magnetic Storms

T2 - Comparison of Arase, Ground Observations, and BATSRUS + CRCM Simulation

AU - Takahashi, Naoko

AU - Seki, Kanako

AU - Teramoto, Mariko

AU - Fok, Mei Ching

AU - Zheng, Yihua

AU - Matsuoka, Ayako

AU - Higashio, Nana

AU - Shiokawa, Kazuo

AU - Baishev, Dmitry

AU - Yoshikawa, Akimasa

AU - Nagatsuma, Tsutomu

PY - 2018/9/28

Y1 - 2018/9/28

N2 - During 26–29 March 2017 magnetic storm, the Arase satellite observed typical ultra low frequency (ULF) waves and acceleration of relativistic electrons. We simulate the global distribution of these ULF waves using CRCM with BATSRUS global magnetospheric magnetohydrodynamic model. The simulation can qualitatively reproduce the ULF waves observed by Arase at frequencies of 2–3 mHz. However, the simulated ULF wave power is 1–2 orders of magnitude smaller than the observation. The simulated ULF wave activity has a good correlation with the solar-wind dynamic pressure variation, while the wave activity on the ground is enhanced even during the recovery phase, possibly due to the Kelvin-Helmholtz instability and/or substorms. We also study the 3–6 April 2017 magnetic storm, in which low ULF wave activity and weak acceleration of relativistic electrons are seen. We suggest that the existence of ULF waves plays an important role in accelerating electrons up to relativistic energies.

AB - During 26–29 March 2017 magnetic storm, the Arase satellite observed typical ultra low frequency (ULF) waves and acceleration of relativistic electrons. We simulate the global distribution of these ULF waves using CRCM with BATSRUS global magnetospheric magnetohydrodynamic model. The simulation can qualitatively reproduce the ULF waves observed by Arase at frequencies of 2–3 mHz. However, the simulated ULF wave power is 1–2 orders of magnitude smaller than the observation. The simulated ULF wave activity has a good correlation with the solar-wind dynamic pressure variation, while the wave activity on the ground is enhanced even during the recovery phase, possibly due to the Kelvin-Helmholtz instability and/or substorms. We also study the 3–6 April 2017 magnetic storm, in which low ULF wave activity and weak acceleration of relativistic electrons are seen. We suggest that the existence of ULF waves plays an important role in accelerating electrons up to relativistic energies.

UR - http://www.scopus.com/inward/record.url?scp=85053878896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053878896&partnerID=8YFLogxK

U2 - 10.1029/2018GL078857

DO - 10.1029/2018GL078857

M3 - Article

AN - SCOPUS:85053878896

VL - 45

SP - 9390

EP - 9397

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 18

ER -