skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A statistical study of EMIC waves observed by Cluster: 2. Associated plasma conditions

Journal Article · · Journal of Geophysical Research. Space Physics
DOI:https://doi.org/10.1002/2016JA022541· OSTI ID:1291230
 [1];  [2];  [2];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Univ. of New Hampshire, Durham, NH (United States); Southwest Research Institute, San Antonio, TX (United States); Univ. of Texas at San Antonio, San Antonio, TX (United States)
  2. Univ. of New Hampshire, Durham, NH (United States)
  3. Chinese Academy of Sciences, Beijing (China)
  4. Max-Plank-Institut fur Extraterrestrische Physik, Garching (Germany)
  5. Rutherford Appleton Laboratory, Didcot (United Kingdom)
  6. Swedish Institute of Space Physics (IRF), Uppsala (Sweden)
  7. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

This is the second in a pair of papers discussing a statistical study of electromagnetic ion cyclotron (EMIC) waves detected during 10 years (2001–2010) of Cluster observations. In the first paper, an analysis of EMIC wave properties (i.e., wave power, polarization, normal angle, and wave propagation angle) is presented in both the magnetic latitude (MLAT)-distance as well as magnetic local time (MLT)-L frames. In addition, this paper focuses on the distribution of EMIC wave-associated plasma conditions as well as two EMIC wave generation proxies (the electron plasma frequency to gyrofrequency ratio proxy and the linear theory proxy) in these same frames. Based on the distributions of hot H+ anisotropy, electron and hot H+ density measurements, hot H+ parallel plasma beta, and the calculated wave generation proxies, three source regions of EMIC waves appear to exist: (1) the well-known overlap between cold plasmaspheric or plume populations with hot anisotropic ring current populations in the postnoon to dusk MLT region; (2) regions all along the dayside magnetosphere at high L shells related to dayside magnetospheric compression and drift shell splitting; and (3) off-equator regions possibly associated with the Shabansky orbits in the dayside magnetosphere.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1291230
Report Number(s):
LA-UR-16-21147
Journal Information:
Journal of Geophysical Research. Space Physics, Journal Name: Journal of Geophysical Research. Space Physics; ISSN 2169-9380
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

References (82)

Statistical analysis of EMIC waves in plasmaspheric plumes from Cluster observations: EMIC WAVES IN PLASMASPHERIC PLUMES journal August 2013
Ring current development during storm main phase journal July 1996
Electron density estimations derived from spacecraft potential measurements on Cluster in tenuous plasma regions: ELECTRON DENSITY IN TENUOUS PLASMAS journal May 2008
Correspondence between a plasma-based EMIC wave proxy and subauroral proton precipitation: EMIC PROXY AND PROTON PRECIPITATION journal December 2011
Survey of cold ionospheric outflows in the magnetotail journal January 2009
Global characteristics of electromagnetic ion cyclotron waves: Occurrence rate and its storm dependence: GLOBAL CHARACTERISTICS OF EMIC WAVES journal July 2013
Solar cycle variations of the Cluster spacecraft potential and its use for electron density estimations: CLUSTER SC POTENTIAL AND ELECTRON DENSITY journal January 2012
Low-energy ions: A previously hidden solar system particle population: PREVIOUSLY HIDDEN LOW-ENERGY IONS journal February 2012
Modeling ring current proton precipitation by electromagnetic ion cyclotron waves during the May 14-16, 1997, storm journal January 2001
Kinetic model of the ring current‐atmosphere interactions journal January 1997
Global distribution of EMIC waves derived from THEMIS observations: GLOBAL DISTRIBUTION OF EMIC WAVES journal May 2012
Limit on stably trapped particle fluxes journal January 1966
A statistical look at plasmaspheric drainage plumes: PLASMASPHERIC DRAINAGE PLUMES journal September 2008
Electron scattering by whistler-mode ELF hiss in plasmaspheric plumes: ELECTRON SCATTERING IN PLUMES journal April 2008
Simulations of inner magnetosphere dynamics with an expanded RAM-SCB model and comparisons with Van Allen Probes observations journal April 2014
High-speed stream driven inferences of global wave distributions at geosynchronous orbit: relevance to radiation-belt dynamics
  • MacDonald, Elizabeth A.; Blum, Lauren W.; Gary, S. Peter
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 466, Issue 2123 https://doi.org/10.1098/rspa.2010.0076
journal May 2010
A statistical study of EMIC wave-associated He + energization in the outer magnetosphere: Cluster/CODIF observations : HE journal November 2011
First multispacecraft ion measurements in and near the Earth’s magnetosphere with the identical Cluster ion spectrometry (CIS) experiment journal January 2001
How to determine the thermal electron density and the magnetic field strength from the Cluster/Whisper observations around the Earth journal January 2001
Proton precipitation to the equator of the isotropic boundary during the geomagnetic storm on November 20–29, 2003 journal January 2014
The ion cyclotron anisotropy instability and the inverse correlation between proton anisotropy and proton beta journal January 1994
A model of the near magnetosphere with a dawn-dusk asymmetry 1. Mathematical structure: A NEW MAGNETOSPHERE MAGNETIC FIELD MODEL, 1 journal August 2002
The occurrence and wave properties of H + ‐, He + ‐, and O + ‐band EMIC waves observed by the Van Allen Probes journal September 2015
Some processes in the magnetosphere journal July 1971
Whisper, a Resonance Sounder and Wave Analyser: Performances and Perspectives for the Cluster Mission journal January 1997
Correction to “Pc2 EMIC waves generated high off the equator in the dayside outer magnetosphere”: CORRECTION journal May 2013
Excitation of EMIC waves detected by the Van Allen Probes on 28 April 2013: EMIC WAVE EXCITATION journal June 2014
Bulk plasma properties at geosynchronous orbit journal January 2005
Simulation of EMIC wave excitation in a model magnetosphere including structured high-density plumes: EMIC EXCITATION IN PLUMES journal July 2009
Global response of the plasmasphere to a geomagnetic disturbance journal January 2003
Effect of EMIC waves on relativistic and ultrarelativistic electron populations: Ground-based and Van Allen Probes observations: Usanova et al.: EMIC Waves and Relativistic Electrons journal March 2014
Wave heating of He + by electromagnetic ion cyclotron waves in the magnetosphere: Heating near the H + -He + bi-ion resonance frequency journal June 1997
The Cluster Active Archive book January 2010
The Cluster Magnetic Field Investigation: overview of in-flight performance and initial results journal January 2001
Reply to comment by R. M. Thorne and R. B. Horne on Khazanov et al. [2002] and Khazanov et al. [2006] : COMMENTARY journal December 2007
<i>Introduction</i><br>The Cluster mission journal January 2001
Comparative study of ring current development using empirical, dipolar, and self-consistent magnetic field simulations: RING CURRENT AND MAGNETIC FIELD DYNAMICS journal December 2010
Observational test of local proton cyclotron instability in the Earth's magnetosphere journal October 1996
Testing linear theory of EMIC waves in the inner magnetosphere: Cluster observations: Testing linear theory of EMIC waves journal February 2014
Modeling EMIC wave growth during the compression event of 29 June 2007 journal January 2009
Statistical analysis of plasmaspheric plumes with Cluster/WHISPER observations journal January 2008
Physical mechanisms of compressional EMIC wave growth: PHYSICAL MECHANISMS OF EMIC WAVE GROWTH journal October 2010
Two types of magnetospheric ELF chorus and their substorm dependences journal November 1977
Multiple bidirectional EMIC waves observed by Cluster at middle magnetic latitudes in the dayside magnetosphere: MULTIPLE BIDIRECTIONAL EMIC WAVES journal October 2013
Is the plasmapause a preferred source region of electromagnetic ion cyclotron waves in the magnetosphere? journal July 2001
Van Allen probes, NOAA, GOES, and ground observations of an intense EMIC wave event extending over 12 h in magnetic local time: EMIC WAVES AND THE RADIATION BELTS journal July 2015
Global plasmasphere evolution 22–23 April 2001 journal January 2005
A model of the near magnetosphere with a dawn-dusk asymmetry 2. Parameterization and fitting to observations: A NEW MAGNETOSPHERE MAGNETIC FIELD MODEL, 2 journal August 2002
Pc 1 micropulsation activity and magnetospheric amplification of 0.2- to 5.0-Hz hydromagnetic waves journal January 1969
Cluster PEACE observations of electrons of spacecraft origin journal January 2001
First results of electric field and density observations by Cluster EFW based on initial months of operation journal January 2001
Hot proton anisotropies and cool proton temperatures in the outer magnetosphere journal January 1994
Pc2 EMIC waves generated high off the equator in the dayside outer magnetosphere: Pc2 WAVES GENERATED HIGH OFF THE EQUATOR journal September 2012
The role of Shabansky orbits in compression-related electromagnetic ion cyclotron wave growth: SHABANSKY ORBITS AND EMIC WAVE GROWTH journal January 2012
Study of EMIC wave excitation using direct ion measurements: MIN ET AL. journal April 2015
Effects of heavy ions on ULF wave resonances near the equatorial region: HEAVY ION WAVE RESONANCES journal November 2008
Propagation of electromagnetic ion cyclotron wave energy in the magnetosphere journal January 2005
Ion observations from geosynchronous orbit as a proxy for ion cyclotron wave growth during storm times: PLASMA-BASED PROXY FOR EMIC WAVES AT GEOSYNCHRONOUS ORBIT journal October 2009
Full‐wave modeling of EMIC waves near the He + gyrofrequency journal January 2016
Wave-particle interactions near Ω He + observed on GEOS 1 and 2 1. Propagation of ion cyclotron waves in He + -rich plasma journal January 1981
Parasitic pitch angle diffusion of radiation belt particles by ion cyclotron waves journal October 1972
Global characteristics of Pc1 magnetic pulsations during solar cycle 23 deduced from CHAMP data journal January 2013
Peace: A Plasma Electron and Current Experiment journal January 1997
Observations of two types of Pc 1-2 pulsations in the outer dayside magnetosphere: OBSERVATIONS OF PC 1-2 PULSATIONS journal December 2002
Relativistic electron precipitation by EMIC waves from self-consistent global simulations: EMIC WAVES AND RELATIVISTIC ELECTRONS journal March 2008
Turbulent loss of ring current protons journal September 1970
Investigation of EMIC wave scattering as the cause for the BARREL 17 January 2013 relativistic electron precipitation event: A quantitative comparison of simulation with observations journal December 2014
Active and passive plasma wave investigations in the earth's environment: The cluster/whisper experiment journal March 2003
The dependence on geomagnetic conditions and solar wind dynamic pressure of the spatial distributions of EMIC waves observed by the Van Allen Probes: RBSP EMIC WAVES journal May 2016
Three-Dimensional Ring Current Decay Model journal January 1995
Density modulated whistler mode emissions observed near the plasmapause: PLASMAPAUSE DENSITY AND WHISTLER MODES journal October 2002
Relativistic electron precipitation during magnetic storm main phase journal July 1971
Electromagnetic ion cyclotron waves stimulated by modest magnetospheric compressions journal January 1993
A statistical study of EMIC waves observed by Cluster: 1. Wave properties: EMIC Wave Properties journal July 2015
A statistical study of Pc 1-2 magnetic pulsations in the equatorial magnetosphere: 1. Equatorial occurrence distributions journal March 1992
Precipitation of radiation belt electrons by EMIC waves, observed from ground and space journal January 2008
EMIC wave activity during geomagnetic storm and nonstorm periods: CRRES results: EMIC DURING CRRES STORMS journal December 2010
A comparison of magnetic field measurements and a plasma-based proxy to infer EMIC wave distributions at geosynchronous orbit: EMIC PROXY AND WAVE COMPARISON journal May 2012
On the role of charge exchange in generating unstable waves in the ring current journal March 1977
A statistical comparison of hot-ion properties at geosynchronous orbit during intense and moderate geomagnetic storms at solar maximum and minimum journal January 2006
Global simulation of EMIC wave excitation during the 21 April 2001 storm from coupled RCM-RAM-HOTRAY modeling: GLOBAL SIMULATION OF EMIC WAVES journal July 2010
Cyclotron instabilities and electromagnetic emission in the ultra low frequency and very low frequency ranges journal January 1965

Cited By (5)

A New N + Band of Electromagnetic Ion Cyclotron Waves in Multi‐Ion Cold Plasmas journal October 2018
Storm Time EMIC Waves Observed by Swarm and Van Allen Probe Satellites journal January 2019
Magnetospheric Multiscale Observation of Quasiperiodic EMIC Waves Associated With Enhanced Solar Wind Pressure journal July 2019
MMS Measurements and Modeling of Peculiar Electromagnetic Ion Cyclotron Waves journal November 2019
Direct measurements of two-way wave-particle energy transfer in a collisionless space plasma journal September 2018

Similar Records

A statistical study of EMIC waves observed by Cluster. 1. Wave properties. EMIC Wave Properties
Journal Article · Thu Jul 23 00:00:00 EDT 2015 · Journal of Geophysical Research. Space Physics · OSTI ID:1291230

Comparing simulated and observed EMIC wave amplitudes using in situ Van Allen Probes’ measurements
Journal Article · Fri Feb 02 00:00:00 EST 2018 · Journal of Atmospheric and Solar-Terrestrial Physics · OSTI ID:1291230

Energetic Electron Precipitation: Multievent Analysis of Its Spatial Extent During EMIC Wave Activity
Journal Article · Sat Mar 09 00:00:00 EST 2019 · Journal of Geophysical Research. Space Physics · OSTI ID:1291230