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THEMIS and the March 2007 Substorm
NASA's Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission observed the dynamics of a rapidly developing substorm in March of 2007. This visualization combines the orbits of the THEMIS satellites with a magnetohydrodynamical simulation of the Earth's magnetosphere corresponding to this time.

Opening with a view over the North geographic pole, we see the five THEMIS satellites moving along their common orbit. The camera then moves down into the equatorial plane and behind the Earth before we fade in the isosurface enclosing the regions where particles have at least 5keV of energy.    Opening with a view over the North geographic pole, we see the five THEMIS satellites moving along their common orbit. The camera then moves down into the equatorial plane and behind the Earth before we fade in the isosurface enclosing the regions where particles have at least 5keV of energy.
Duration: 18.0 seconds
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  1280x720 (30 fps) MPEG-2   19 MB
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  1280x720 (30 fps) MPEG-4   42 MB
  1920x1080 (30 fps) MPEG-4   74 MB
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  320x180     PNG           223 KB
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A view of the five THEMIS satellites (the color dots) from a location above the north geographic pole.    A view of the five THEMIS satellites (the color dots) from a location above the north geographic pole.

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The camera moves down near the equatorial plane presenting a side view of the satellites in their orbits.    The camera moves down near the equatorial plane presenting a side view of the satellites in their orbits.

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  320 x 180         PNG 251 KB


Zooming in on the location of the satellites...    Zooming in on the location of the satellites...

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we move to a location behind the Earth.    we move to a location behind the Earth.

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Red isosurfaces fade in, representing the boundary of regions where electron temperature (AKA mean energy) exceeds 5 kilo-electron volts.    Red isosurfaces fade in, representing the boundary of regions where electron temperature (AKA mean energy) exceeds 5 kilo-electron volts.

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The boundaries of the high-energy electrons engulf the THEMIS satellites.    The boundaries of the high-energy electrons engulf the THEMIS satellites.

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Energetic electrons continue to flow around the satellites.    Energetic electrons continue to flow around the satellites.

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The substorm begins to subside around 11:30UTC.    The substorm begins to subside around 11:30UTC.

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  160 x 80           PNG 58 KB
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Animation Number:3485
Animator:Tom Bridgman (SVS) (Lead)
Completed:2007-11-21
Scientists:Vassilis Angelopoulos (University of California, Berkeley)
 Joachim Raeder (University of New Hampshire)
Instrument:THEMIS
Data sets:SSCweb
 Geospace General Circulation Model (GGCM)
Data Collected:2007-03-23T10:30:00UTC - 2007-03-23T11:30:00UTC
Series:THEMIS Dayside Science
Keywords:
SVS >> Geomagnetic Field
SVS >> HDTV
SVS >> Magnetosphere
SVS >> Simulation
SVS >> iPod
More Information on this topic available at:
http://www.nasa.gov/mission_pages/themis/auroras/northern_lights.html
 
 
Please give credit for this item to
NASA/Goddard Space Flight Center Scientific Visualization Studio


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