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aurore polaire
Brief History: The Polar Aurora
However, imaging cameras aboard satellites, more sensitive than the eye, observe a ring of diffuse aurora around the polar cap at most times. Large impulsive electric fields were observed by electric field probes aboard S3-3
URL : http://www-spof.gsfc.nasa.gov/Education/bh2_6.html
Do Electric Fields Cause the Aurora?
DO LOCALIZED ELECTRIC FIELDS CAUSE THE STRUCTURE OF THE AURORA? The critical issue is whether the electric potential of the auroral electron acceleration region increases significantly inside discrete arcs.
URL : http://wwwssl.msfc.nasa.gov/ssl/pad/sppb/image/aurora/Eos/Index.html
Overview of the Aurora
Commonly observed in northern Europe and northern America, the aurora are a rich source of folklore and myth. The Northern Lights, Aurora Borealis, and The Southern Lights, Aurora Australis, are shimmering sheets of light in the sky.
URL : http://www.athena.ivv.nasa.gov/curric/space/solterr/aurora.html
SECEF Aurora Resource
These web sites provide day by day glimpses from space of the auroral activity in the northern hemisphere. Archives The POLAR satellite produces images of the Earth's north polar region every 10 minutes, and you can visit this site to see just how active...
URL : http://image.gsfc.nasa.gov/poetry/aurora.html
© Anaconda-//, 1999
last revised: December 19, 1999
Copyright : Anaconda-//, 1999