Computer Science – Sound
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jatp...43.1133g&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 43, Nov. 1981, p. 1133-1141.
Computer Science
Sound
7
Annual Variations, Geomagnetic Micropulsations, Ionospheric Conductivity, Ionospheric Sounding, Boundary Value Problems, Diurnal Variations, Lines Of Force
Scientific paper
It is shown that there is a marked seasonal variation in the conjugate phase relationship of Pi2 pulsations observed simultaneously, at the stations of St. Anthony, Newfoundland, and Halley Bay, Antarctica, which have different ionospheric seasonal variations. During southern summer, when the ionosphere above the Antarctic station is continously sunlit, the half-wave resonance relationship between stations (consisting of zero deg phase difference for H-components and 180 deg for D-components) is approximately maintained, but with more scattering and greater errors in the results. It is suggested that this is due to the effects of the asymmetric ionospheric boundary layer's appearance as a deterioration in the similarity between the conjugate signals because of a difference in signal damping.
Green Cristina A.
Hamilton Alex R.
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