Motion of Sporadic-E Patches determined from High-Frequency Backscatter Records

Abstract

NEW evidence of the motion of ‘sporadic-E’ ionization has been obtained at Stanford University from records of ionospheric sounding equipment which displays ground (or sea) backscatter as mirrored in ionospheric layers or reflecting clouds. Sporadic-E patches of relatively limited geographical extent (order of 10,000 sq. km.) often appear on the records of this apparatus, and their growth and motion can in some cases be followed. Whether this motion is due to physical translation of the ionized material (as by winds) or to some other cause such as motion of an ionizing agency is not known; however, it is of interest to compare observations made by this relatively new technique with earlier ones made by other means.

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