Drift paths of ions composing multiple-nose spectral structures near the inner edge of the plasma sheet

Ferradas, C. P.; Zhang, J. -C.; Spence, H. E.; Kistler, L. M.; Larsen, Brian Arthur; Reeves, Geoffrey D.; Skoug, Ruth M.; Funsten, Herbert O.

doi:10.1002/2016GL071359

Title: Drift paths of ions composing multiple-nose spectral structures near the inner edge of the plasma sheet

Journal Article · Sat Nov 05 00:00:00 EDT 2016 · Geophysical Research Letters

DOI:https://doi.org/10.1002/2016GL071359· OSTI ID:1351235

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Univ. of New Hampshire, Durham, NH (United States). Space Science Center and Dept. of Physics
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here in this paper, we present a case study of the H⁺, He⁺, and O⁺ multiple-nose structures observed by the Helium, Oxygen, Proton, and Electron instrument on board Van Allen Probe A over one complete orbit on 28 September 2013. Nose structures are observed near the inner edge of the plasma sheet and constitute the signatures of ion drift in the highly dynamic environment of the inner magnetosphere. We find that the multiple noses are intrinsically associated with variations in the solar wind. Backward ion drift path tracings show new details of the drift trajectories of these ions; i.e., multiple noses are formed by ions with a short drift time from the assumed source location to the inner region and whose trajectories (1) encircle the Earth different number of times or (2) encircle the Earth equal number of times but with different drift time, before reaching the observation site.

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

Sponsoring Organization:: USDOE; National Aeronautics and Space Administration (NASA)

Grant/Contract Number:: AC52-06NA25396; NNX13AE23G; NAS5-01072; 967399

OSTI ID:: 1351235

Report Number(s):: LA-UR-17-20114

Journal Information:: Geophysical Research Letters, Vol. 43, Issue 22; ISSN 0094-8276

Publisher:: American Geophysical UnionCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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Comparison of Electron Loss Models in the Inner Magnetosphere During the 2013 St. Patrick's Day Geomagnetic Storm Ferradas, C. P.; Jordanova, V. K.; Reeves, G. D. Journal of Geophysical Research: Space Physics, Vol. 124, Issue 10 https://doi.org/10.1029/2019ja026649	journal	October 2019

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