Journal article
Quantifying hiss‐driven energetic electron precipitation: A detailed conjunction event analysis
Geophysical research letters, Vol.41(4), pp.1085-1092
02/28/2014
DOI: 10.1002/2013GL059132
Abstract
We analyze a conjunction event between the Van Allen Probes and the low‐altitude Polar Orbiting Environmental Satellite (POES) to quantify hiss‐driven energetic electron precipitation. A physics‐based technique based on quasi‐linear diffusion theory is used to estimate the ratio of precipitated and trapped electron fluxes (R), which could be measured by the two‐directional POES particle detectors, using wave and plasma parameters observed by the Van Allen Probes. The remarkable agreement between modeling and observations suggests that this technique is applicable for quantifying hiss‐driven electron scattering near the bounce loss cone. More importantly, R in the 100–300 keV energy channel measured by multiple POES satellites over a broad L magnetic local time region can potentially provide the spatiotemporal evolution of global hiss wave intensity, which is essential in evaluating radiation belt electron dynamics, but cannot be obtained by in situ equatorial satellites alone.
Key Points
Measured and calculated hiss Bw from POES electron measurements agree wellElectron ratio measured by POES is able to estimate hiss wave intensityThis technique can be used to provide global hiss wave distribution
Details
- Title: Subtitle
- Quantifying hiss‐driven energetic electron precipitation: A detailed conjunction event analysis
- Creators
- C. A Kletzing - University of IowaW Li - University of California, Los AngelesB Ni - University of California, Los AngelesW. S Kurth - University of IowaR. M Thorne - University of California, Los AngelesG. B Hospodarsky - University of IowaJ Bortnik - University of California, Los AngelesY Nishimura - University of California, Los AngelesJ. C Green - National Oceanic and Atmospheric AdministrationH. E Spence - University of New HampshireG. D Reeves - Los Alamos National LaboratoryJ. B Blake - The Aerospace CorporationJ. F Fennell - The Aerospace CorporationS. G Claudepierre - The Aerospace CorporationX Gu - Wuhan University
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.41(4), pp.1085-1092
- DOI
- 10.1002/2013GL059132
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Number of pages
- 8
- Grant note
- NASA (NNX11AD75G; NNX11AR64G; NNX13AI61G) NASA's (NAS5‐01072) JHU/APL (967399; 921647)
- Language
- English
- Date published
- 02/28/2014
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199940902771
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