A 120-day oscillation in the solar activity and geophysical phenomen

Details A 120-day oscillation in the solar activity and geophysical phenomen A 120-day oscillation in the solar activity and geophysical phenomen

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218..302d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 302-306.

Astronomy and Astrophysics

Astrophysics

5

Solar Activity Effects, Solar Oscillations, Solar Terrestrial Interactions, Universal Time, Geomagnetism, Interplanetary Magnetic Fields, Least Squares Method, Maximum Entropy Method, Power Spectra, Troposphere

Scientific paper

The periodic fluctuation of the Universal Time, with a period of 120 days, is first confirmed. The same fluctuation is identified in the atmospheric angular momentum, the geomagnetic index, the solar activity and the interplanetary magnetic field. The existence of this particular component both in solar and geophysical phenomena, associated with other analysis establishing the excitation of the troposphere by the interplanetary magnetic field conducts to the conclusion that its origin lies in physical processes in the sun.

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