Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections

L. R. Alves; L. A. Da Silva; V. M. Souza; D. G. Sibeck; P. R. Jauer; L. E A Vieira; B. M. Walsh; M. V D Silveira; J. P. Marchezi; M. Rockenbach; A. Dal Lago; O. Mendes; B. T. Tsurutani; D. Koga; S. G. Kanekal; D. N. Baker; J. R. Wygant; C. A. Kletzing

doi:10.1002/2015GL067066

Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections

L. R. Alves, L. A. Da Silva, V. M. Souza, D. G. Sibeck, P. R. Jauer, L. E A Vieira, B. M. Walsh, M. V D Silveira, J. P. Marchezi, M. Rockenbach, A. Dal Lago, O. Mendes, B. T. Tsurutani, D. Koga, S. G. Kanekal, D. N. Baker, J. R. Wygant, C. A. Kletzing

Physics and Astronomy (Twin Cities)

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

15 Scopus citations

Abstract

Magnetopause shadowing and wave-particle interactions are recognized as the two primary mechanisms for losses of electrons from the outer radiation belt. We investigate these mechanisms, using satellite observations both in interplanetary space and within the magnetosphere and particle drift modeling. Two interplanetary shocks/sheaths impinged upon the magnetopause causing a relativistic electron flux dropout. The magnetic cloud (MC) and interplanetary structure sunward of the MC had primarily northward magnetic field, perhaps leading to a concomitant lack of substorm activity and a 10 daylong quiescent period. The arrival of two shocks caused an unusual electron flux dropout. Test-particle simulations have shown ∼ 2 to 5 MeV energy, equatorially mirroring electrons with initial values of L≥5.5 can be lost to the magnetosheath via magnetopause shadowing alone. For electron losses at lower L-shells, coherent chorus wave-driven pitch angle scattering and ULF wave-driven radial transport have been shown to be viable mechanisms.

Original language	English (US)
Pages (from-to)	978-987
Number of pages	10
Journal	Geophysical Research Letters
Volume	43
Issue number	3
DOIs	https://doi.org/10.1002/2015GL067066
State	Published - Feb 16 2016

Keywords

adiabatic radial transport
magnetopause shadowing
nonadiabatic radial transport
outer radiation belt dynamics
relativistic electron loss

Access

10.1002/2015GL067066

Fingerprint Dive into the research topics of 'Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections'. Together they form a unique fingerprint.

Cite this

Alves, L. R., Da Silva, L. A., Souza, V. M., Sibeck, D. G., Jauer, P. R., Vieira, L. E. A., Walsh, B. M., Silveira, M. V. D., Marchezi, J. P., Rockenbach, M., Lago, A. D., Mendes, O., Tsurutani, B. T., Koga, D., Kanekal, S. G., Baker, D. N., Wygant, J. R., & Kletzing, C. A. (2016). Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections. Geophysical Research Letters, 43(3), 978-987. https://doi.org/10.1002/2015GL067066

Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections. / Alves, L. R.; Da Silva, L. A.; Souza, V. M.; Sibeck, D. G.; Jauer, P. R.; Vieira, L. E A; Walsh, B. M.; Silveira, M. V D; Marchezi, J. P.; Rockenbach, M.; Lago, A. Dal; Mendes, O.; Tsurutani, B. T.; Koga, D.; Kanekal, S. G.; Baker, D. N.; Wygant, J. R.; Kletzing, C. A.

In: Geophysical Research Letters, Vol. 43, No. 3, 16.02.2016, p. 978-987.

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

Alves, LR, Da Silva, LA, Souza, VM, Sibeck, DG, Jauer, PR, Vieira, LEA, Walsh, BM, Silveira, MVD, Marchezi, JP, Rockenbach, M, Lago, AD, Mendes, O, Tsurutani, BT, Koga, D, Kanekal, SG, Baker, DN, Wygant, JR & Kletzing, CA 2016, 'Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections', Geophysical Research Letters, vol. 43, no. 3, pp. 978-987. https://doi.org/10.1002/2015GL067066

Alves, L. R. ; Da Silva, L. A. ; Souza, V. M. ; Sibeck, D. G. ; Jauer, P. R. ; Vieira, L. E A ; Walsh, B. M. ; Silveira, M. V D ; Marchezi, J. P. ; Rockenbach, M. ; Lago, A. Dal ; Mendes, O. ; Tsurutani, B. T. ; Koga, D. ; Kanekal, S. G. ; Baker, D. N. ; Wygant, J. R. ; Kletzing, C. A. / Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections. In: Geophysical Research Letters. 2016 ; Vol. 43, No. 3. pp. 978-987.

@article{cc3bc6b992704ed29dde7db33c8bfc06,

title = "Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections",

abstract = "Magnetopause shadowing and wave-particle interactions are recognized as the two primary mechanisms for losses of electrons from the outer radiation belt. We investigate these mechanisms, using satellite observations both in interplanetary space and within the magnetosphere and particle drift modeling. Two interplanetary shocks/sheaths impinged upon the magnetopause causing a relativistic electron flux dropout. The magnetic cloud (MC) and interplanetary structure sunward of the MC had primarily northward magnetic field, perhaps leading to a concomitant lack of substorm activity and a 10 daylong quiescent period. The arrival of two shocks caused an unusual electron flux dropout. Test-particle simulations have shown ∼ 2 to 5 MeV energy, equatorially mirroring electrons with initial values of L≥5.5 can be lost to the magnetosheath via magnetopause shadowing alone. For electron losses at lower L-shells, coherent chorus wave-driven pitch angle scattering and ULF wave-driven radial transport have been shown to be viable mechanisms.",

keywords = "adiabatic radial transport, magnetopause shadowing, nonadiabatic radial transport, outer radiation belt dynamics, relativistic electron loss",

author = "Alves, {L. R.} and {Da Silva}, {L. A.} and Souza, {V. M.} and Sibeck, {D. G.} and Jauer, {P. R.} and Vieira, {L. E A} and Walsh, {B. M.} and Silveira, {M. V D} and Marchezi, {J. P.} and M. Rockenbach and Lago, {A. Dal} and O. Mendes and Tsurutani, {B. T.} and D. Koga and Kanekal, {S. G.} and Baker, {D. N.} and Wygant, {J. R.} and Kletzing, {C. A.}",

year = "2016",

month = feb,

day = "16",

doi = "10.1002/2015GL067066",

language = "English (US)",

volume = "43",

pages = "978--987",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "3",

}

TY - JOUR

T1 - Outer radiation belt dropout dynamics following the arrival of two interplanetary coronal mass ejections

AU - Alves, L. R.

AU - Da Silva, L. A.

AU - Souza, V. M.

AU - Sibeck, D. G.

AU - Jauer, P. R.

AU - Vieira, L. E A

AU - Walsh, B. M.

AU - Silveira, M. V D

AU - Marchezi, J. P.

AU - Rockenbach, M.

AU - Lago, A. Dal

AU - Mendes, O.

AU - Tsurutani, B. T.

AU - Koga, D.

AU - Kanekal, S. G.

AU - Baker, D. N.

AU - Wygant, J. R.

AU - Kletzing, C. A.

PY - 2016/2/16

Y1 - 2016/2/16

N2 - Magnetopause shadowing and wave-particle interactions are recognized as the two primary mechanisms for losses of electrons from the outer radiation belt. We investigate these mechanisms, using satellite observations both in interplanetary space and within the magnetosphere and particle drift modeling. Two interplanetary shocks/sheaths impinged upon the magnetopause causing a relativistic electron flux dropout. The magnetic cloud (MC) and interplanetary structure sunward of the MC had primarily northward magnetic field, perhaps leading to a concomitant lack of substorm activity and a 10 daylong quiescent period. The arrival of two shocks caused an unusual electron flux dropout. Test-particle simulations have shown ∼ 2 to 5 MeV energy, equatorially mirroring electrons with initial values of L≥5.5 can be lost to the magnetosheath via magnetopause shadowing alone. For electron losses at lower L-shells, coherent chorus wave-driven pitch angle scattering and ULF wave-driven radial transport have been shown to be viable mechanisms.

AB - Magnetopause shadowing and wave-particle interactions are recognized as the two primary mechanisms for losses of electrons from the outer radiation belt. We investigate these mechanisms, using satellite observations both in interplanetary space and within the magnetosphere and particle drift modeling. Two interplanetary shocks/sheaths impinged upon the magnetopause causing a relativistic electron flux dropout. The magnetic cloud (MC) and interplanetary structure sunward of the MC had primarily northward magnetic field, perhaps leading to a concomitant lack of substorm activity and a 10 daylong quiescent period. The arrival of two shocks caused an unusual electron flux dropout. Test-particle simulations have shown ∼ 2 to 5 MeV energy, equatorially mirroring electrons with initial values of L≥5.5 can be lost to the magnetosheath via magnetopause shadowing alone. For electron losses at lower L-shells, coherent chorus wave-driven pitch angle scattering and ULF wave-driven radial transport have been shown to be viable mechanisms.

KW - adiabatic radial transport

KW - magnetopause shadowing

KW - nonadiabatic radial transport

KW - outer radiation belt dynamics

KW - relativistic electron loss

UR - http://www.scopus.com/inward/record.url?scp=84961287085&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961287085&partnerID=8YFLogxK

U2 - 10.1002/2015GL067066

DO - 10.1002/2015GL067066

M3 - Article

AN - SCOPUS:84961287085

VL - 43

SP - 978

EP - 987

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 3

ER -