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THEMIS/ASI Nights

A collection of ground-based All-Sky Imagers (ASI) make up another important component of the THEMIS mission. It is sometimes referred to as the sixth THEMIS satellite. Descriptions of the instruments are available on the THEMIS-Canada Home Page. Imagery from each camera is co-registered to the surface of the Earth and assembled into a view of the auroral events.

This movie presents data from the first large auroral substorm since the THEMIS launch. The substorm reached its maximum between 6:00 and 7:00 UT.

Note that the ASI data in this movie are assembled from the lower resolution quick-look data sets. These create some extra pixellation of the data in the static high-resolution views. This animation has been superceded by ID 3590: THEMIS/ASI Nights-High Resolution, which uses higher-resolution ASI data.


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This movie zooms in on the Earth, revealing the placement of the ASI ground stations and their sky coverage. We observe the stations coming online as the night progresses.    This movie zooms in on the Earth, revealing the placement of the ASI ground stations and their sky coverage. We observe the stations coming online as the night progresses.
Duration: 52.0 seconds
Available formats:
  1280x720   MPEG-4   4 MB
  1280x720   QT         32 MB
  1280x720   MPEG-2   34 MB
  512x288     MPEG-1   9 MB
  640x360     QT         8 MB
  1280x720   Frames (DateStamp)
  1280x720   JPEG         157 KB
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This version of the movie has no time stamps in the lower left corner.    This version of the movie has no time stamps in the lower left corner.
Duration: 52.0 seconds
Available formats:
  1280x720   MPEG-4   12 MB
  1280x720   QT         37 MB
  1280x720   MPEG-2   33 MB
  512x288     MPEG-1   9 MB
  1280x720   Frames (NoDateStamp)
  1280x720   JPEG         156 KB
How to play our movies


This version does not have a longitude/latitude grid on the Earth.    This version does not have a longitude/latitude grid on the Earth.
Duration: 52.0 seconds
Available formats:
  1280x720   MPEG-4   4 MB
  1280x720   MPEG-2   30 MB
  512x288     MPEG-1   8 MB
  1280x720   Frames (NoGrid)
  1280x720   JPEG         132 KB
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The movie opens with a view over the sunlit Pacific Ocean.  The sun is just setting in California.    The movie opens with a view over the sunlit Pacific Ocean. The sun is just setting in California.

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As the camera moves over northern Canada, already in night, we see the circles of sky coverage for the ASI ground stations (blue circles).  The eastern-most stations have come online and we see the image data from these cameras (colored green).    As the camera moves over northern Canada, already in night, we see the circles of sky coverage for the ASI ground stations (blue circles). The eastern-most stations have come online and we see the image data from these cameras (colored green).

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  2560 x 1440     TIFF       4 MB


No time stamp. As the camera moves over northern Canada, already in night, we see the circles of sky coverage for the ASI ground stations (blue circles).  The eastern-most stations have come online and we see the image data from these cameras (colored green).    No time stamp. As the camera moves over northern Canada, already in night, we see the circles of sky coverage for the ASI ground stations (blue circles). The eastern-most stations have come online and we see the image data from these cameras (colored green).

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  2560 x 1440     TIFF       4 MB


The night progresses and ASI cameras further west come online.  The bright green structures from the aurora become evident.    The night progresses and ASI cameras further west come online. The bright green structures from the aurora become evident.

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No time stamp.  The night progresses and ASI cameras further west come online.  The bright green structures from the aurora become evident.    No time stamp. The night progresses and ASI cameras further west come online. The bright green structures from the aurora become evident.

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Hours later, almost every ASI camera is online.    Hours later, almost every ASI camera is online.

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No time stamp.  Hours later, almost every ASI camera is online.    No time stamp. Hours later, almost every ASI camera is online.

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Aurora regions brighten as the substorm hits. Components of the auroral structures begin to change more quickly.    Aurora regions brighten as the substorm hits. Components of the auroral structures begin to change more quickly.

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No time stamp. Aurora regions brighten as the substorm hits. Components of the auroral structures begin to change more quickly.    No time stamp. Aurora regions brighten as the substorm hits. Components of the auroral structures begin to change more quickly.

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Further evolution of the substorm.    Further evolution of the substorm.

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No time stamp. Further evolution of the substorm.    No time stamp. Further evolution of the substorm.

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Further evolution of the substorm.    Further evolution of the substorm.

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No time stamp. Further evolution of the substorm.    No time stamp. Further evolution of the substorm.

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Further evolution of the substorm.    Further evolution of the substorm.

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  320 x 180         PNG       69 KB


No time stamp. Further evolution of the substorm.    No time stamp. Further evolution of the substorm.

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  2560 x 1440     TIFF       3 MB


Further evolution of the substorm.    Further evolution of the substorm.

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No time stamp. Further evolution of the substorm.    No time stamp. Further evolution of the substorm.

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As local morning arrives, the ASI stations turn off, starting from the eastern portion of Canada.    As local morning arrives, the ASI stations turn off, starting from the eastern portion of Canada.

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No time stamp.  As local morning arrives, the ASI stations turn off, starting from the eastern portion of Canada.    No time stamp. As local morning arrives, the ASI stations turn off, starting from the eastern portion of Canada.

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A few stations are still on in western Canada and Alaska.    A few stations are still on in western Canada and Alaska.

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No time stamp.  A few stations are still on in western Canada and Alaska.    No time stamp. A few stations are still on in western Canada and Alaska.

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All ASI stations are now off.    All ASI stations are now off.

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All ASI stations are now off.    All ASI stations are now off.

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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?3512
Animation Number:3512
Completed:2008-04-30
Animators:Tom Bridgman (GST) (Lead)
 Greg Shirah (NASA/GSFC)
Producer:Rani Gran (NASA/GSFC)
Scientists:Vassilis Angelopoulos (University of California, Berkeley)
 David G. Sibeck (NASA/GSFC)
 Harald Frey (University of California, Berkeley)
 Nicola Fox (Johns Hopkins University/APL)
Platform/Sensor/Data Set:THEMIS/All-Sky Imager (ASI) (2008-03-09T00:00:00UT - 2008-03-09T12:00:00UT)
Series:Auroral Substorms - the View from Space
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio
 
Keywords:
SVS >> Aurora
SVS >> HDTV
GCMD >> Earth Science >> Sun-earth Interactions >> Ionosphere/Magnetosphere Particles >> Aurorae
SVS >> Space Weather
SVS >> THEMIS
SVS >> Auroral Substorm
SVS >> For Educators
SVS >> Atmospheric Phenomenon
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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