Radiation belt electron flux dropouts: Local time, radial, and particle‐energy dependence

By T. Onsager, G. Rostoker, Hyangpyo Kim, G. Reeves, T. Obara, H. Singer, C. Smithtro. 2002

149 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Geophysics

View Paper: https://www.semanticscholar.org/paper/d2e63d0d7ab851955f7bf40d2b4e1384e04d707d

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In Astronomy and Astrophysics

1. R. Thorne
2. Nigel P. Meredith
3. Wen Li
4. Y. Shprits
5. R. Horne
6. Binbin Ni
7. Jacob Bortnik
8. Danny Summers

In Geophysics

1. R. Thorne
2. Nigel P. Meredith
3. Y. Shprits
4. R. Horne
5. Binbin Ni
6. Wen Li
7. Jacob Bortnik
8. Danny Summers

Citations in the corpus

• Source and seed populations for relativistic electrons: Their roles in radiation belt changes (2015, result): “Such reductions at geostationary orbit, usually of shorter duration than this case, have been reported previously and have been studied extensively [Onsager et al., 2002, 2007; Green et al., 2004].”
• Testing loss mechanisms capable of rapidly depleting relativistic electron flux in the Earth's outer radiation belt (2004, background): “A12211 Onsager et al. [2002] study. To do so, we first smooth the electron flux data with a 2-hour running average.”
• Relativistic electron precipitation by EMIC waves from self‐consistent global simulations (2008, background): “to the atmosphere [e.g., Millan et al., 2002; Onsager et al., 2002; Green et al., 2004; Sandanger et al., 2007].”
• Timescales for radiation belt electron acceleration and loss due to resonant wave‐particle interactions: 2. Evaluation for VLF chorus, ELF hiss, and electromagnetic ion cyclotron waves (2007, background): “Rapid depletions of relativistic electron flux in the outer radiation belt reported by Onsager et al. [2002] , Green et al. [2004], and recently by Clilverd et al. [2006] could at least be partly due to intense scattering by EMIC waves.”
• Outward radial diffusion driven by losses at magnetopause (2006, background): “[7] Even though radial diffusion rates are strongest during the main phase of the storm and are capable of effectively transporting electrons to lower L shells and accelerating them, electron fluxes are commonly observed to decrease during the main phase of a storm [e.g., Nagai, 1988; Mathie and Man”
• Explaining sudden losses of outer radiation belt electrons during geomagnetic storms (2012, background): “During such an event the electron flux can drop by several orders of magnitude in just a few hour”
• Earth's Van Allen Radiation Belts: From Discovery to the Van Allen Probes Era (2019, background): “REPT = Relativistic Electron Proton Telescope; RBSP = Radiation Belt Storm Probes, LI AND HUDSON 8327 et al., 2013; Onsager et al., 2002; Shprits et al., 2006; Su et al., 2017; Turner et al., 2012; Turner, Angelopoulos, Li, et al., 2014; Turner, Angelopoulos, Morley, et al., 2014; Ukhorskiy et al.,…”
• Global characteristics of electromagnetic ion cyclotron waves: Occurrence rate and its storm dependence (2013, background): “The cyclotron resonance scattering is currently considered one of the leading loss mechanisms of radiation belt electrons [e.g., Onsager et al., 2002; Green et al., 2004; Bortnik et al., 2006; Onsager et al., 2007; Borovsky and Denton, 2009; Ebihara and Miyoshi, 2011; Turner et al., 2012], although…”
• Observation of two distinct, rapid loss mechanisms during the 20 November 2003 radiation belt dropout event (2006, background): “[7] Fast nonadiabatic losses are often observed during the main phase of storms [Nagai, 1988,Mathie and Mann, 2000; Desorgher et al., 2000; Onsager et al., 2002; Green et al., 2004].”
• Dynamic evolution of energetic outer zone electrons due to wave‐particle interactions during storms (2007, background): “Scattering by EMIC and hiss waves is a potential candidate to explain the observed sudden dropouts [ Onsager et al., 2002; Green et al., 2004] of relativistic electron flux at the onset of enhanced geomagnetic activity.”
• Acceleration and loss of relativistic electrons during geomagnetic storms (2003, result): “In contrast to the earlier study of Reeves [1998], we use a fixed definition of geomagnetic storms as distinct intervals during which the minimum value of the Dst index is less than 50 nT.”