Correlated Pc4-5 ULF waves, whistler-mode chorus, and pulsating aurora observed by the Van Allen Probes and ground-based systems

Jaynes, A. N.; Lessard, M. R.; Takahashi, K.; Ali, A. F.; Malaspina, D. M.; Michell, R. G.; Spanswick, E. L.; Baker, D. N.; Blake, J. B.; Cully, C.; Donovan, E. F.; Kletzing, C. A.; Reeves, G. D.; Samara, M.; Spence, H. E.; Wygant, J. R.

doi:10.1002/2015JA021380

Title: Correlated Pc4-5 ULF waves, whistler-mode chorus, and pulsating aurora observed by the Van Allen Probes and ground-based systems

Journal Article · Wed Oct 28 00:00:00 EDT 2015 · Journal of Geophysical Research. Space Physics

DOI:https://doi.org/10.1002/2015JA021380· OSTI ID:1236778

Jaynes, A. N. ^[1]; Lessard, M. R. ^[2]; Takahashi, K. ^[3];

^[1];

^[1]; Michell, R. G. ^[4]; Spanswick, E. L. ^[5]; Baker, D. N. ^[1]; Blake, J. B. ^[6]; Cully, C. ^[5]; Donovan, E. F. ^[5]; Kletzing, C. A. ^[7];

^[8]; Samara, M. ^[9]; Spence, H. E. ^[2]; Wygant, J. R. ^[10]

Univ. of Colorado, Boulder, CO (United States)
Univ. of New Hampshire, Durham, NH (United States)
The Johns Hopkins Univ. Applied Physics Laboratory, Laurel, MD (United States)
Univ. of Maryland, College Park, MD (United States); NASA GSFC, Greenbelt, MD (United States)
Univ. of Calgary, Calgary, AB (Canada)
Aerospace Corporation, El Segundo, CA (United States)
Univ. of Iowa, Iowa City, IA (United States)
New Mexico Consortium, Los Alamos, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
NASA GSFC, Greenbelt, MD (United States)
Univ. of Minnesota, Minneapolis, MN (United States)

Theory and observations have linked equatorial VLF waves with pulsating aurora for decades, invoking the process of pitch angle scattering of tens of keV electrons in the equatorial magnetosphere. Recently published satellite studies have strengthened this argument, by showing strong correlation between pulsating auroral patches and both lower-band chorus and tens of keV electron modulation in the vicinity of geosynchronous orbit. Additionally, a previous link has been made between Pc4–5 compressional pulsations and modulation of whistler-mode chorus using Time History of Events and Macroscale Interactions during Substorms. In the current study, we present simultaneous in situ observations of structured chorus waves and an apparent field line resonance (in the Pc4–5 range) as a result of a substorm injection, observed by Van Allen Probes, along with ground-based observations of pulsating aurora. We demonstrate the likely scenario being one of substorm-driven Pc4–5 ULF pulsations modulating chorus waves, and thus providing the driver for pulsating particle precipitation into the Earth's atmosphere. Interestingly, the modulated chorus wave and ULF wave periods are well correlated, with chorus occurring at half the periodicity of the ULF waves. We also show, for the first time, a particular few-Hz modulation of individual chorus elements that coincides with the same modulation in a nearby pulsating aurora patch. As a result, such modulation has been noticed as a high-frequency component in ground-based camera data of pulsating aurora for decades and may be a result of nonlinear chorus wave interactions in the equatorial region.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: contract 428 967399; contract NAS5-01072; NNX13AO43H; NNX14AB97G; AGS-1456161; AGS-1456129; AC52-06NA25396

OSTI ID:: 1236778

Report Number(s):: LA-UR-15-27788

Journal Information:: Journal of Geophysical Research. Space Physics, Vol. 120, Issue 10; ISSN 2169-9380

Publisher:: American Geophysical UnionCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 43 works

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Distant modulation of electron intensity during the expansion phase of an auroral substorm Bryant, D. A.; Smith, M. J.; Courtier, G. M. Planetary and Space Science, Vol. 23, Issue 5 https://doi.org/10.1016/0032‐0633(75)90022‐7	journal	May 1975
Magnetospheric chorus: Occurrence patterns and normalized frequency Burtis, W. J.; Helliwell, R. A. Planetary and Space Science, Vol. 24, Issue 11 https://doi.org/10.1016/0032‐0633(76)90119‐7	journal	November 1976
Latitudinal and temporal characteristics of pulsating auroras Duncan, C. N.; Creutzberg, F.; Gattinger, R. L. Canadian Journal of Physics, Vol. 59, Issue 8 https://doi.org/10.1139/p81‐140	journal	August 1981
The Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on RBSP Kletzing, C. A.; Kurth, W. S.; Acuna, M. Space Science Reviews, Vol. 179, Issue 1-4 https://doi.org/10.1007/s11214‐013‐9993‐6	journal	June 2013
Morphology of the pulsating aurora Kvifte, G. J.; Pettersen, H. Planetary and Space Science, Vol. 17, Issue 9 https://doi.org/10.1016/0032‐0633(69)90148‐2	journal	September 1969
Alfvén ship waves: high-m ULF pulsations in the magnetosphere generated by a moving plasma inhomogeneity Mager, P. N.; Klimushkin, D. Yu. Annales Geophysicae, Vol. 26, Issue 6 https://doi.org/10.5194/angeo‐26‐1653‐2008	journal	January 2008
Science Objectives and Rationale for the Radiation Belt Storm Probes Mission Mauk, B. H.; Fox, N. J.; Kanekal, S. G. Space Science Reviews, Vol. 179, Issue 1-4 https://doi.org/10.1007/s11214‐012‐9908‐y	journal	September 2012
Electron energy measurements in pulsating auroras McEwen, D. J.; Yee, E.; Whalen, B. A. Canadian Journal of Physics, Vol. 59, Issue 8 https://doi.org/10.1139/p81‐146	journal	August 1981
Characteristics of Poker Flat Incoherent Scatter Radar (PFISR) naturally enhanced ion-acoustic lines (NEIALs) in relation to auroral forms Michell, R. G.; Grydeland, T.; Samara, M. Annales Geophysicae, Vol. 32, Issue 10 https://doi.org/10.5194/angeo‐32‐1333‐2014	journal	January 2014
Statistics of pulsating auroras on the basis of all-sky TV data from five stations. I. Occurrence frequency Oguti, T.; Kokubun, S.; Hayashi, K. Canadian Journal of Physics, Vol. 59, Issue 8 https://doi.org/10.1139/p81‐152	journal	August 1981
Magnetospheric chorus emissions: A review Sazhin, S. S.; Hayakawa, M. Planetary and Space Science, Vol. 40, Issue 5 https://doi.org/10.1016/0032‐0633(92)90009‐D	journal	May 1992
Bounce resonant interaction between pulsations and trapped particles Southwood, D. J.; Dungey, J. W.; Etherington, R. J. Planetary and Space Science, Vol. 17, Issue 3 https://doi.org/10.1016/0032‐0633(69)90068‐3	journal	March 1969
Pc5 modulation of high energy electron precipitation: particle interaction regions and scattering efficiency Spanswick, E.; Donovan, E.; Baker, G. Annales Geophysicae, Vol. 23, Issue 5 https://doi.org/10.5194/angeo‐23‐1533‐2005	journal	January 2005
Science Goals and Overview of the Radiation Belt Storm Probes (RBSP) Energetic Particle, Composition, and Thermal Plasma (ECT) Suite on NASA’s Van Allen Probes Mission Spence, H. E.; Reeves, G. D.; Baker, D. N. Space Science Reviews, Vol. 179, Issue 1-4 https://doi.org/10.1007/s11214‐013‐0007‐5	journal	October 2013
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Intermediate-m ULF waves generated by substorm injection: a case study Yeoman, T. K.; Klimushkin, D. Yu.; Mager, P. N. Annales Geophysicae, Vol. 28, Issue 8 https://doi.org/10.5194/angeo‐28‐1499‐2010	journal	January 2010
Pc5 waves generated by substorm injection: a case study Zolotukhina, N. A.; Mager, P. N.; Klimushkin, D. Yu. Annales Geophysicae, Vol. 26, Issue 7 https://doi.org/10.5194/angeo‐26‐2053‐2008	journal	January 2008

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