Computer Science – Sound
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jatp...40.1281f&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 40, Dec. 1978, p. 1281-1283, 1285-1288. Research supported by the Australia
Computer Science
Sound
1
Geomagnetic Pulsations, Ionospheric Propagation, Ionospheric Sounding, Group Velocity, Magnetic Storms, Proton Precipitation
Scientific paper
Information on the temporal movement in the source of IPDP (intervals of pulsations of diminishing period) have been obtained by applying time delay location techniques to two events recorded at three stations in Southeast Australia. It is found that IPDP events propagate from coherent finite high latitude source regions to middle and low latitudes in the ionospheric duct. A westward drift in the source location in the early evening hours is observed as the IPDP frequency increases with time. This is attributed to the energization of approximately 50 keV substorm associated protons as they drift azimuthally and move to lower L-values under the influence of electric field convection.
Fraser Brian J.
Wawrzyniak S.
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