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Magnetospheric waves Lauren Blum.

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Presentation on theme: "Magnetospheric waves Lauren Blum."— Presentation transcript:

1 Magnetospheric waves Lauren Blum

2 CRRES Meredith et al. (2004)

3 Wave Particle Interactions
Cyclotron Resonance: NOAA POES – 30 deg field of view references Lauren Blum - University of Colorado - GEM 2013 waves tutorial

4 Waves in the Inner Magnetosphere
Shprits et al. (2006) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

5 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
ULF Waves Shprits et al. (2006) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

6 ULF Waves - Classifications
Shprits et al. (2006) McPherron (2005) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

7 ULF Waves – Radiation Belt Effects
Shprits et al. (2006) Mechanism for radial transport and acceleration of radiation belt electrons Shprits et al. (2006) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

8 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Plasmaspheric Hiss Shprits et al. (2006) 100 Hz – kHz Lauren Blum - University of Colorado - GEM 2013 waves tutorial

9 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Plasmaspheric Hiss Shprits et al. (2006) hiss plasmapause fuhr fce flhr 100 Hz – kHz Meredith et al. (2004) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

10 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Hiss Bortnik et al. (2008) Shprits et al. (2006) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

11 Hiss – Radiation Belt Effects
Shprits et al. (2006) Responsible for radiation belt electron decay and generation of the slot region Log(Flux) [#/cm2-s-str] SAMPEX 2-6 MeV e- Li et al. (2011) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

12 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Whistler Mode Chorus Shprits et al. (2006) Generated by anisotropic keV electrons on the morning side Develop in the low density region outside the plasmapause 0.1fce < f < 0.8fce Can cause electron loss and acceleration Lauren Blum - University of Colorado - GEM 2013 waves tutorial

13 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Whistler Mode Chorus Shprits et al. (2006) Li et al. (2011) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

14 Whistler Mode Chorus – Effects
Shprits et al. (2006) Source of local acceleration of radiation belt electrons Schiller et al. (2012) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

15 Whistler Mode Chorus – Effects
Shprits et al. (2006) Source of pulsating aurora and keV electron precipitation Jaynes et al. (2013) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

16 Whistler Mode Chorus - Effects
Shprits et al. (2006) Radiation belt electron loss mechanism -> microbursts Lorentzen et al. (2001) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

17 Whistler Mode Chorus - Effects
Shprits et al. (2006) Meredith et al. (2012) Crew et al. (in prep) Radiation belt electron loss mechanism -> microbursts

18 Electromagnetic Ion Cyclotron Waves
Shprits et al. (2006) Generated by anisotropic keV ions Excited in bands below the proton gyrofrequency, ~.1-5 Hz Associated with duskside MeV electron precipitation Lauren Blum - University of Colorado - GEM 2013 waves tutorial

19 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
EMIC Shprits et al. (2006) Fraser et al. (2010) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

20 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
EMIC Shprits et al. (2006) Off-equator, compressionally generated EMIC waves McCollough et al. (2012) Cluster data Lauren Blum - University of Colorado - GEM 2013 waves tutorial

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EMIC - Effects Shprits et al. (2006) Ring current ion loss mechanism Jordanova et al. (2006) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

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EMIC - Effects Shprits et al. (2006) Radiation belt electron loss mechanism Millan et al. (2002) Lauren Blum - University of Colorado - GEM 2013 waves tutorial

23 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Summary Lots of different types of waves the main ones that might come up during the week in breakout sessions highlighted here (with a weighting towards radiation belts!) Relevance: waves can interact with particle populations in the magnetosphere acceleration and loss mechanisms for various particle populations (e.g. radiation belts, ring current) provide a way to transfer energy between different particle populations Lauren Blum - University of Colorado - GEM 2013 waves tutorial

24 Thanks! Questions? Lauren Blum

25 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Backups Lauren Blum - University of Colorado - GEM 2013 waves tutorial

26 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
Cyclotron Resonance Tsurutani & Lakhina (1997) resonance when the Doppler shifted wave frequency = electron gyrofrequency: NOAA POES – 30 deg field of view Lauren Blum - University of Colorado - GEM 2013 waves tutorial

27 Lauren Blum - University of Colorado - GEM 2013 waves tutorial
EMIC Yuan et al. (2012) Shprits et al. (2006) Cluster data Lauren Blum - University of Colorado - GEM 2013 waves tutorial


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