space physics mhd research
DESCRIPTION
Space Physics MHD Research. Personnel: Jay R. Johnson Eun-Hwa Kim. Key Issues: Entry and Transport. Plasma Sheet Dynamics. How does mass, momentum and energy enter the magentosphere? Reconnection Kelvin-Helmholtz Instability Kinetic Alfven Waves/Mode Conversion. Plasma Sheet Dynamics. - PowerPoint PPT PresentationTRANSCRIPT
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Personnel:
Jay R. Johnson
Eun-Hwa Kim
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Space Physics MHD Research
![Page 2: Space Physics MHD Research](https://reader035.vdocuments.site/reader035/viewer/2022062314/56813f93550346895daa8556/html5/thumbnails/2.jpg)
Key Issues: Entry and Transport
![Page 3: Space Physics MHD Research](https://reader035.vdocuments.site/reader035/viewer/2022062314/56813f93550346895daa8556/html5/thumbnails/3.jpg)
Plasma Sheet Dynamics
• How does mass, momentum and energy enter the magentosphere?– Reconnection
– Kelvin-Helmholtz Instability
– Kinetic Alfven Waves/Mode Conversion
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![Page 4: Space Physics MHD Research](https://reader035.vdocuments.site/reader035/viewer/2022062314/56813f93550346895daa8556/html5/thumbnails/4.jpg)
Plasma Sheet Dynamics
• Entropy Definition global/total: S=p1/dv; specific/local: s = p/
• Entropy Crisis– Steady Convection– Substorm Transition
• How are ions heated?• What convects cold plasma to the center of
the plasma sheet?
Mapping Technique
![Page 5: Space Physics MHD Research](https://reader035.vdocuments.site/reader035/viewer/2022062314/56813f93550346895daa8556/html5/thumbnails/5.jpg)
Role of Heavy Ions
• At Magnetopause– Reconnection (Threshold/Growth)– KH inertial effects (Inertial Scale Effects)– Mode Conversion (Strong Absorption)
• At Planets– Mercury– Jupiter
IIR AR