Image of IMAGE in space

IMAGE Creates New Names to Describe Invisible Cloud Features


A variety of terms intended to describe observed plasmaspheric features have arisen over the years from in situ observations. With the launch of IMAGE, the EUV observations have lead to a new and confusing serge of entirely new terms. In an effort to reduce the growing confusion, the IMAGE/EUV team has sought to standardize terms for classes of features found in EUV images.

(2002: Dennis Gallagher)

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Additional Information

Plasmasphere - The region of Earth's upper atmosphere located from 200 miles to about 10,000 miles above the surface containing low-density gas trapped by Earth's magnetic field. [more]

Magnetic Storm - A disturbance in Earth's magnetic field that can last from a few minutes to several days. Severe storms can cause compass needles to give the wrong navigation bearings.

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Dr. S. Odenwald,, +1-301-286-6953
NSSDC, Mail Code 630, NASA Goddard Space Flight Center, Greenbelt, MD 20771
NASA Approval: J. L. Green,
Rev. 1.0.0, 24 April 2003, EVB II