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Title: Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times

As electromagnetic ion cyclotron (EMIC) waves may play an important role in radiation belt dynamics, there has been a push to better include them into global simulations. How to best include EMIC wave effects is still an open question. Recently many studies have attempted to parameterize EMIC waves and their characteristics by geomagnetic indices. However, this does not fully take into account important physics related to the phase of a geomagnetic storm. In this paper we first consider how EMIC wave occurrence varies with the phase of a geomagnetic storm and the SYM-H, AE, and Kp indices. Here we show that the storm phase plays an important role in the occurrence probability of EMIC waves. The occurrence rates for a given value of a geomagnetic index change based on the geomagnetic condition. Then in this study we also describe the typical plasma and wave parameters observed in L and magnetic local time for quiet, storm, and storm phase. These results are given in a tabular format in the supporting information so that more accurate statistics of EMIC wave parameters can be incorporated into modeling efforts.
Authors:
 [1] ;  [2] ; ORCiD logo [3] ;  [4] ;  [5]
  1. Dartmouth College, Hanover, NH (United States). Dept. of Physics and Astronomy; NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  2. Univ. of Newcastle, Callaghan, NSW (Australia). Centre for Space Physics
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Colorado, Boulder, CO (United States). Lab. for Atmospheric and Space Physics (LASP)
  5. Rice Univ., Houston, TX (United States). Dept. of Physics and Astronomy
Publication Date:
Report Number(s):
LA-UR-17-25036
Journal ID: ISSN 2169-9380; TRN: US1703061
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 7; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 58 GEOSCIENCES; Heliospheric and Magnetospheric Physics; electromagnetic ion cyclotron waves; geomagnetic storms; wave parameters; CRRES satellite; ULF waves; geomagnetic index
OSTI Identifier:
1407895

Halford, Alexa J., Fraser, Brian J, Morley, Steven Karl, Elkington, Scot R., and Chan, Anthony A. Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times. United States: N. p., Web. doi:10.1002/2016JA022694.
Halford, Alexa J., Fraser, Brian J, Morley, Steven Karl, Elkington, Scot R., & Chan, Anthony A. Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times. United States. doi:10.1002/2016JA022694.
Halford, Alexa J., Fraser, Brian J, Morley, Steven Karl, Elkington, Scot R., and Chan, Anthony A. 2016. "Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times". United States. doi:10.1002/2016JA022694. https://www.osti.gov/servlets/purl/1407895.
@article{osti_1407895,
title = {Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times},
author = {Halford, Alexa J. and Fraser, Brian J and Morley, Steven Karl and Elkington, Scot R. and Chan, Anthony A},
abstractNote = {As electromagnetic ion cyclotron (EMIC) waves may play an important role in radiation belt dynamics, there has been a push to better include them into global simulations. How to best include EMIC wave effects is still an open question. Recently many studies have attempted to parameterize EMIC waves and their characteristics by geomagnetic indices. However, this does not fully take into account important physics related to the phase of a geomagnetic storm. In this paper we first consider how EMIC wave occurrence varies with the phase of a geomagnetic storm and the SYM-H, AE, and Kp indices. Here we show that the storm phase plays an important role in the occurrence probability of EMIC waves. The occurrence rates for a given value of a geomagnetic index change based on the geomagnetic condition. Then in this study we also describe the typical plasma and wave parameters observed in L and magnetic local time for quiet, storm, and storm phase. These results are given in a tabular format in the supporting information so that more accurate statistics of EMIC wave parameters can be incorporated into modeling efforts.},
doi = {10.1002/2016JA022694},
journal = {Journal of Geophysical Research. Space Physics},
number = 7,
volume = 121,
place = {United States},
year = {2016},
month = {6}
}