Spectrum of frequency modulation of serpentine emission as a reflection of the solar fluctuation spectrum-Reference-Cited by-同舟云学术

Spectrum of frequency modulation of serpentine emission as a reflection of the solar fluctuation spectrum

Published:2017-05-05 Issue:1 Volume:3 Page:73-77
ISSN:2500-0535
Container-title:Solar-Terrestrial Physics
language:en
Short-container-title:

Author:

Довбня Борис¹,Dovbnya Boris²,Клайн Борис¹,Klain Boris²,Гульельми Анатолий³,Guglielmi Anatol⁴,Потапов Александр⁵,Potapov Alexander⁶

Affiliation:

1. Геофизическая обсерватория «Борок» ИФЗ РАН

2. Borok Geophysical Observatory of IPE RAS

3. Институт физики Земли им. О.Ю. Шмидта РАН

4. Schmidt Institute of Physics of the Earth, RAS

5. Институт солнечно-земной физики СО РАН

6. Institute of Solar Terrestrial Physics SB RAS

Abstract

We study frequency modulation of serpentine emission (SE), using data from the Vostok Antarctic station. It is shown that the previously observed 5-minute modulation of the SE carrier frequency is the most prominent and stable in the emission spectrum. Frequency fluctuations of this period are present in about 70 % of the total SE observation time under moderately quiet geomagnetic conditions (Kp=0–2). We performed a per-pixel processing of SE dynamic spectra and found that the power spectrum of the signal frequency modulation contains a clearly visi-ble peak at periods close to 5 minutes. A detailed study shows the emission spectrum matching the frequency range of the solar photospheric oscilla-tions. The results of the analysis allow us to conclude that the 5-minute modulation of the SE carrier fre-quency can be viewed as a reflection of photospheric fluctuations with the same period that is typical for the solar eigenoscillations.

Publisher

Infra-M Academic Publishing House

Subject

Space and Planetary Science,Atmospheric Science,Geophysics

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