Quantifying the Size and Duration of a Microburst-Producing Chorus Region on 5 December 2017

S. S. Elliott; A. W. Breneman; C. Colpitts; J. M. Pettit; C. A. Cattell; A. J. Halford; M. Shumko; J. Sample; A. T. Johnson; Y. Miyoshi; Y. Kasahara; C. M. Cully; S. Nakamura; T. Mitani; T. Hori; I. Shinohara; K. Shiokawa; S. Matsuda; M. Connors; M. Ozaki; J. Manninen

doi:10.1029/2022GL099655

Quantifying the Size and Duration of a Microburst-Producing Chorus Region on 5 December 2017

S. S. Elliott, A. W. Breneman, C. Colpitts, J. M. Pettit, C. A. Cattell, A. J. Halford, M. Shumko, J. Sample, A. T. Johnson, Y. Miyoshi, Y. Kasahara, C. M. Cully, S. Nakamura, T. Mitani, T. Hori, I. Shinohara, K. Shiokawa, S. Matsuda, M. Connors, M. OzakiJ. Manninen

Physics and Astronomy (Twin Cities)

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

2 Scopus citations

Abstract

Microbursts are impulsive (<1 s) injections of electrons into the atmosphere, thought to be caused by nonlinear scattering by chorus waves. Although attempts have been made to quantify their contribution to outer belt electron loss, the uncertainty in the overall size and duration of the microburst region is typically large, so that their contribution to outer belt loss is uncertain. We combine datasets that measure chorus waves (Van Allen Probes [RBSP], Arase, ground-based VLF stations) and microburst (>30 keV) precipitation (FIREBIRD II and AC6 CubeSats, POES) to determine the size of the microburst-producing chorus source region beginning on 5 December 2017. We estimate that the long-lasting (∼30 hr) microburst-producing chorus region extends from 4 to 8 (Formula presented.) MLT and 2–5 (Formula presented.) L. We conclude that microbursts likely represent a major loss source of outer radiation belt electrons for this event.

Original language	English (US)
Article number	e2022GL099655
Journal	Geophysical Research Letters
Volume	49
Issue number	15
DOIs	https://doi.org/10.1029/2022GL099655
State	Published - Aug 16 2022

Bibliographical note

Funding Information:
Work at the University of Minnesota and NASA Goddard was supported by the NASA Heliophysics Supporting Research program NNH18ZDA001N‐HSR award 80NSSC19K0842. The authors would like to acknowledge Jeremy Faden and the use of Autoplot. The authors would like to thank George Hospodarsky for providing EMFISIS wave normal angle data. JMP acknowledge funding from the NSF Coupling, Energetics and Dynamics of Atmospheric Regions, grant AGS 1651428 and the NASA Living With a Star program, grant NNX14AH54G.

Publisher Copyright:
© 2022. The Authors.

Keywords

chorus waves
electron precipitation
microburst precipitation
radiation belt
wave-particle interactions

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Elliott, S. S., Breneman, A. W., Colpitts, C., Pettit, J. M., Cattell, C. A., Halford, A. J., Shumko, M., Sample, J., Johnson, A. T., Miyoshi, Y., Kasahara, Y., Cully, C. M., Nakamura, S., Mitani, T., Hori, T., Shinohara, I., Shiokawa, K., Matsuda, S., Connors, M., ... Manninen, J. (2022). Quantifying the Size and Duration of a Microburst-Producing Chorus Region on 5 December 2017. Geophysical Research Letters, 49(15), Article e2022GL099655. https://doi.org/10.1029/2022GL099655

Elliott, SS, Breneman, AW, Colpitts, C, Pettit, JM, Cattell, CA, Halford, AJ, Shumko, M, Sample, J, Johnson, AT, Miyoshi, Y, Kasahara, Y, Cully, CM, Nakamura, S, Mitani, T, Hori, T, Shinohara, I, Shiokawa, K, Matsuda, S, Connors, M, Ozaki, M & Manninen, J 2022, 'Quantifying the Size and Duration of a Microburst-Producing Chorus Region on 5 December 2017', Geophysical Research Letters, vol. 49, no. 15, e2022GL099655. https://doi.org/10.1029/2022GL099655

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abstract = "Microbursts are impulsive (<1 s) injections of electrons into the atmosphere, thought to be caused by nonlinear scattering by chorus waves. Although attempts have been made to quantify their contribution to outer belt electron loss, the uncertainty in the overall size and duration of the microburst region is typically large, so that their contribution to outer belt loss is uncertain. We combine datasets that measure chorus waves (Van Allen Probes [RBSP], Arase, ground-based VLF stations) and microburst (>30 keV) precipitation (FIREBIRD II and AC6 CubeSats, POES) to determine the size of the microburst-producing chorus source region beginning on 5 December 2017. We estimate that the long-lasting (∼30 hr) microburst-producing chorus region extends from 4 to 8 (Formula presented.) MLT and 2–5 (Formula presented.) L. We conclude that microbursts likely represent a major loss source of outer radiation belt electrons for this event.",

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author = "Elliott, {S. S.} and Breneman, {A. W.} and C. Colpitts and Pettit, {J. M.} and Cattell, {C. A.} and Halford, {A. J.} and M. Shumko and J. Sample and Johnson, {A. T.} and Y. Miyoshi and Y. Kasahara and Cully, {C. M.} and S. Nakamura and T. Mitani and T. Hori and I. Shinohara and K. Shiokawa and S. Matsuda and M. Connors and M. Ozaki and J. Manninen",

note = "Funding Information: Work at the University of Minnesota and NASA Goddard was supported by the NASA Heliophysics Supporting Research program NNH18ZDA001N‐HSR award 80NSSC19K0842. The authors would like to acknowledge Jeremy Faden and the use of Autoplot. The authors would like to thank George Hospodarsky for providing EMFISIS wave normal angle data. JMP acknowledge funding from the NSF Coupling, Energetics and Dynamics of Atmospheric Regions, grant AGS 1651428 and the NASA Living With a Star program, grant NNX14AH54G. Publisher Copyright: {\textcopyright} 2022. The Authors.",

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AU - Elliott, S. S.

AU - Breneman, A. W.

AU - Colpitts, C.

AU - Pettit, J. M.

AU - Cattell, C. A.

AU - Halford, A. J.

AU - Shumko, M.

AU - Sample, J.

AU - Johnson, A. T.

AU - Miyoshi, Y.

AU - Kasahara, Y.

AU - Cully, C. M.

AU - Nakamura, S.

AU - Mitani, T.

AU - Hori, T.

AU - Shinohara, I.

AU - Shiokawa, K.

AU - Matsuda, S.

AU - Connors, M.

AU - Ozaki, M.

AU - Manninen, J.

N1 - Funding Information: Work at the University of Minnesota and NASA Goddard was supported by the NASA Heliophysics Supporting Research program NNH18ZDA001N‐HSR award 80NSSC19K0842. The authors would like to acknowledge Jeremy Faden and the use of Autoplot. The authors would like to thank George Hospodarsky for providing EMFISIS wave normal angle data. JMP acknowledge funding from the NSF Coupling, Energetics and Dynamics of Atmospheric Regions, grant AGS 1651428 and the NASA Living With a Star program, grant NNX14AH54G. Publisher Copyright: © 2022. The Authors.

PY - 2022/8/16

Y1 - 2022/8/16

N2 - Microbursts are impulsive (<1 s) injections of electrons into the atmosphere, thought to be caused by nonlinear scattering by chorus waves. Although attempts have been made to quantify their contribution to outer belt electron loss, the uncertainty in the overall size and duration of the microburst region is typically large, so that their contribution to outer belt loss is uncertain. We combine datasets that measure chorus waves (Van Allen Probes [RBSP], Arase, ground-based VLF stations) and microburst (>30 keV) precipitation (FIREBIRD II and AC6 CubeSats, POES) to determine the size of the microburst-producing chorus source region beginning on 5 December 2017. We estimate that the long-lasting (∼30 hr) microburst-producing chorus region extends from 4 to 8 (Formula presented.) MLT and 2–5 (Formula presented.) L. We conclude that microbursts likely represent a major loss source of outer radiation belt electrons for this event.

AB - Microbursts are impulsive (<1 s) injections of electrons into the atmosphere, thought to be caused by nonlinear scattering by chorus waves. Although attempts have been made to quantify their contribution to outer belt electron loss, the uncertainty in the overall size and duration of the microburst region is typically large, so that their contribution to outer belt loss is uncertain. We combine datasets that measure chorus waves (Van Allen Probes [RBSP], Arase, ground-based VLF stations) and microburst (>30 keV) precipitation (FIREBIRD II and AC6 CubeSats, POES) to determine the size of the microburst-producing chorus source region beginning on 5 December 2017. We estimate that the long-lasting (∼30 hr) microburst-producing chorus region extends from 4 to 8 (Formula presented.) MLT and 2–5 (Formula presented.) L. We conclude that microbursts likely represent a major loss source of outer radiation belt electrons for this event.

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KW - electron precipitation

KW - microburst precipitation

KW - radiation belt

KW - wave-particle interactions

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JO - Geophysical Research Letters

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M1 - e2022GL099655

ER -

Quantifying the Size and Duration of a Microburst-Producing Chorus Region on 5 December 2017

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