Activity‐dependent global model of electron loss inside the plasmasphere. Issue 11 (12th June 2014)

• Record Type: Journal Article
• Authors: Orlova, Ksenia; Spasojevic, Maria; Shprits, Yuri
• Is Part Of: Geophysical research letters. Volume 41:Issue 11(2014:Jun.)
• Page Start: 3744
• Page End: 3751
• Publication Date: 2014-06-12
• Subjects: Geophysics -- Periodicals; Planets -- Periodicals; Lunar geology -- Periodicals; 550
• DOI: 10.1002/2014GL060100
• Languages: English
• ISSNs: 0094-8276

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>Using data from the CRRES plasma wave experiment, we develop quadratic fits to the mean of the wave amplitude squared for plasmaspheric hiss as a function of <italic>Kp</italic>, <italic>L</italic>, and magnetic latitude (<italic>λ</italic>) for the dayside (6 &lt; magnetic local time (MLT) ≤ 21) and nightside (21 &lt; MLT ≤ 6) magnetic local time sectors. The empirical model of hiss waves is used to compute quasi‐linear pitch angle diffusion coefficients for energetic, relativistic, and ultrarelativistic electrons in the energy range of 1 keV to 10 MeV. In our calculations, we account for changes in hiss wave normal angle and plasma density with increasing <italic>λ</italic>. Electron lifetimes are then calculated from the diffusion coefficients and parameterized as a function of energy, <italic>Kp</italic>, and <italic>L</italic>. Coefficients for both the hiss model and the electron lifetimes are provided and can be easily incorporated into existing diffusion, convection, and particle tracing codes.</p> </abstract>