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 This animation has been superceded by ID 3590: THEMIS/ASI Nights-High Resolution, which uses higher-resolution ASI data.

Visualization Credits

Tom Bridgman (GST): Lead Animator
Greg Shirah (NASA/GSFC): Animator
Rani Gran (NASA/GSFC): Producer
Vassilis Angelopoulos (University of California, Berkeley): Scientist
David G. Sibeck (NASA/GSFC): Scientist
Harald Frey (University of California, Berkeley): Scientist
Nicola Fox (Johns Hopkins University/APL): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

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Data Used:
THEMIS/All-Sky Imager (ASI) 2008-03-09T00:00:00UT - 2008-03-09T12:00:00UT

This item is part of this series:
Auroral Substorms - the View from Space

SVS >> Aurora
GCMD >> Earth Science >> Sun-earth Interactions >> Ionosphere/Magnetosphere Particles >> Aurorae
SVS >> Space Weather
SVS >> Auroral Substorm
SVS >> For Educators
SVS >> Atmospheric Phenomenon
NASA Science >> Sun

GCMD 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