A study of pearl pulsations in the equatorial region of India

Details A study of pearl pulsations in the equatorial region of India A study of pearl pulsations in the equatorial region of India

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jatp...40.1289s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 40, Dec. 1978, p. 1289-1291, 1293-1296.

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Equatorial Atmosphere, Geomagnetic Pulsations, Magnetic Surveys, Earth Magnetosphere, India, Ionospheric Sounding, Plasma Density, Solar Cycles

Scientific paper

An attempt is made to examine some aspects of pearl pulsations recorded at Choutuppal (geomagnetic latitude = 7 deg 28 min N) during 1967-1975. The midperiod (t) of pearls is found to bear a linear relation to the pearl repetition period (T) and is of the form T = 70t + 11.2. The periods of pearls are shown to be influenced by the average level of magnetic activity prevailing during the preceding few days rather than by that existing on the day of pearl occurrence. An increase in the medium frequency of pearls was found after the occurrence of a magnetic disturbance, particularly one that lasted several days. Results on pearl pulsations are correlated with plasmasphere phenomena.

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