Accession Number : AD0259841

Title :   SPORADIC-E AS OBSERVED WITH ROCKETS

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s) : SEDDON,J. CARL

Report Date : 31 JUL 1961

Pagination or Media Count : 1

Abstract : Data obtained with rockets flown over New Mexico, U. S. A. and Manitoba, Canada have always shown the sporadic-E layer to be a thin layer with a large electron density gradient. The vertical electron density profiles and the horizontal uniformity of the sporadic-E layer are discussed herein. These layers have a strong tendency to form at preferential altitudes separated byAPPROXIMATELY 6 KM, AND A STRIKING CORRELATION EXISTS WITH WINDSHEARS AND MAGNETIC FIELD VARIATIONS. In two cases where comparisons with ionograms were possible, the minimum frequency of the F-region echoes was found approximately equal to the plasma frequency o the sporadic-E layer reduced by half the gyrofrequency. On the other hand, the maximum frequency of the sporadic-E echoes as noted on ionograms was sometimes as much as 1 to 2 Mc greater than the plasma frequency. (Author)

Descriptors :   *ATMOSPHERIC SOUNDING, *IONOSPHERE, *SOUNDING ROCKETS, DENSITY, ELECTRONS, IONIZATION, MAGNETIC FIELDS, GEOMAGNETISM, WIND

Distribution Statement : APPROVED FOR PUBLIC RELEASE