Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster

Li Yan; Wenlong Liu; Dianjun Zhang; Theodore E. Sarris; Xinlin Li; Xin Tong

doi:10.1029/2024GL112358

Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster

Li Yan
, Wenlong Liu^*
, Dianjun Zhang^*
, Theodore E. Sarris
, Xinlin Li
, Xin Tong

^*Corresponding author for this work

School of Space and Earth Sciences

Beihang University
Democritus University of Thrace
University of Colorado Boulder

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Ultra-low frequency (ULF) waves in the Pc5 band are essential for the transport of electrons in the radiation belt and the transport of energy from the solar wind into the magnetosphere. Based on ∼14-year of electric field data from Cluster satellite, the spatial distributions of power spectral densities (PSD) of electric field ULF waves in the inner magnetosphere are statistically investigated, suggesting that PSDs of electric ULF wave increase with increasing L and depend on magnetic latitude (MLAT). PSDs of electric ULF wave are greater at noon for lower |MLAT| and at midnight for higher |MLAT|. Moreover, the L and MLAT dependent empirical formulas for the ULF magnetic and electric fields are provided, enabling the latitudinal effect in the radial diffusion evaluation. The results in this paper suggest a potential shift in the contribution to radial diffusion may occur between the magnetic and electric fields at different MLATs.

Original language	English
Article number	e2024GL112358
Journal	Geophysical Research Letters
Volume	52
Issue number	2
DOIs	https://doi.org/10.1029/2024GL112358
State	Published - 28 Jan 2025

Keywords

ULF wave
electric field
radial diffusion

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10.1029/2024GL112358

Cite this

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title = "Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster",

abstract = "Ultra-low frequency (ULF) waves in the Pc5 band are essential for the transport of electrons in the radiation belt and the transport of energy from the solar wind into the magnetosphere. Based on ∼14-year of electric field data from Cluster satellite, the spatial distributions of power spectral densities (PSD) of electric field ULF waves in the inner magnetosphere are statistically investigated, suggesting that PSDs of electric ULF wave increase with increasing L and depend on magnetic latitude (MLAT). PSDs of electric ULF wave are greater at noon for lower |MLAT| and at midnight for higher |MLAT|. Moreover, the L and MLAT dependent empirical formulas for the ULF magnetic and electric fields are provided, enabling the latitudinal effect in the radial diffusion evaluation. The results in this paper suggest a potential shift in the contribution to radial diffusion may occur between the magnetic and electric fields at different MLATs.",

keywords = "ULF wave, electric field, radial diffusion",

author = "Li Yan and Wenlong Liu and Dianjun Zhang and Sarris, \{Theodore E.\} and Xinlin Li and Xin Tong",

note = "Publisher Copyright: {\textcopyright} 2025. The Author(s).",

year = "2025",

month = jan,

day = "28",

doi = "10.1029/2024GL112358",

language = "英语",

volume = "52",

journal = "Geophysical Research Letters",

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}

TY - JOUR

T1 - Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster

AU - Yan, Li

AU - Liu, Wenlong

AU - Zhang, Dianjun

AU - Sarris, Theodore E.

AU - Li, Xinlin

AU - Tong, Xin

PY - 2025/1/28

Y1 - 2025/1/28

N2 - Ultra-low frequency (ULF) waves in the Pc5 band are essential for the transport of electrons in the radiation belt and the transport of energy from the solar wind into the magnetosphere. Based on ∼14-year of electric field data from Cluster satellite, the spatial distributions of power spectral densities (PSD) of electric field ULF waves in the inner magnetosphere are statistically investigated, suggesting that PSDs of electric ULF wave increase with increasing L and depend on magnetic latitude (MLAT). PSDs of electric ULF wave are greater at noon for lower |MLAT| and at midnight for higher |MLAT|. Moreover, the L and MLAT dependent empirical formulas for the ULF magnetic and electric fields are provided, enabling the latitudinal effect in the radial diffusion evaluation. The results in this paper suggest a potential shift in the contribution to radial diffusion may occur between the magnetic and electric fields at different MLATs.

AB - Ultra-low frequency (ULF) waves in the Pc5 band are essential for the transport of electrons in the radiation belt and the transport of energy from the solar wind into the magnetosphere. Based on ∼14-year of electric field data from Cluster satellite, the spatial distributions of power spectral densities (PSD) of electric field ULF waves in the inner magnetosphere are statistically investigated, suggesting that PSDs of electric ULF wave increase with increasing L and depend on magnetic latitude (MLAT). PSDs of electric ULF wave are greater at noon for lower |MLAT| and at midnight for higher |MLAT|. Moreover, the L and MLAT dependent empirical formulas for the ULF magnetic and electric fields are provided, enabling the latitudinal effect in the radial diffusion evaluation. The results in this paper suggest a potential shift in the contribution to radial diffusion may occur between the magnetic and electric fields at different MLATs.

KW - ULF wave

KW - electric field

KW - radial diffusion

UR - https://www.scopus.com/pages/publications/85216187698

U2 - 10.1029/2024GL112358

DO - 10.1029/2024GL112358

M3 - 文章

AN - SCOPUS:85216187698

SN - 0094-8276

VL - 52

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 2

M1 - e2024GL112358

ER -

Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster

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Keywords

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