Oscillations in D-region absorption at periods of one to two months

Details Oscillations in D-region absorption at periods of one to two months Oscillations in D-region absorption at periods of one to two months

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jatp...51..975s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 51, Nov.-Dec. 1989, p. 975-981.

Physics

Atmospheric Attenuation, D Region, Equatorial Regions, Ionospheric Propagation, Reflection, Annual Variations, Ionosondes, Solar Flux, Time Series Analysis

Scientific paper

One to two month oscillations in D-region absorption are found in seven years of daily f-min data from low latitude stations at Singapore (1 deg N, 104 deg E) and Rarotonga (21 deg S, 160 deg W). Coherency (cross-spectral) analyses reveal that solar flux variations account for much of the f-min variance at these periods. Over the range of periods from 10 to 200 days, statistically significant linear correlation is found between the f-min time series and contemporaneous 10.7 cm solar flux measurements at periods of 16-19 days, the 26-29 day solar rotation band, and a broad band covering 43-80 day periods.

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