Variations in the schumann resonance polarization ellipse in the horizontal and vertical planes according to observations at the Barentsburg and Lovozero observatories |
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| Authors: | V K Roldugin A N Vasil’ev |
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| Institution: | 1. Polar Geophysical Institute, Apatity Division, Kola Scientific Center, Russian Academy of Sciences, ul. Fersmana 14, Apatity, Murmansk oblast, 184209, Russia
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| Abstract: | The diurnal variations in the amplitude and parameters of polarization ellipses of the first Schumann resonance according
to three magnetic field components, observed on December 1–10, 2007, at the Barentsburg and Lovozero observatories, have been
studied. Ellipses have been constructed in the (H, D) and (H, Z) planes. The value of the minor axis, inclination of the major axis, ellipticity, and the rotation direction have been estimated.
The vertical magnetic component of the Schumann resonance is three to four times as small as the horizontal component. The
difference in the diurnal variations in the ellipse parameters between both observatories has been found. The effect can be
caused by a difference in the Earth’s conductivity in the vicinity of the observatories and by conductivity anisotropy. The
major axis inclination and ellipticity have semidiurnal components. The polarization vector mostly rotates from D to H in the horizontal plane and from Z to H in the vertical plane at both stations. |
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