Seasonal variations of impedance in the ionospheric plasma
Yıl: 2020 Cilt: 23 Sayı: 2 Sayfa Aralığı: 427 - 433 Metin Dili: İngilizce DOI: 10.2339/politeknik.514327 İndeks Tarihi: 11-06-2021
Seasonal variations of impedance in the ionospheric plasma
Öz: The ionosphere is an ionized layer that extends between 50 km and 1000 km altitudes in the atmosphere. It plays an important rolein atmospheric electricity. The ionosphere has the number of electrically charged particles and thus, it affects the propagation ofthe radio waves. In this study, magnitudes of impedance for different seasons and different geomagnetic activity periods in theionospheric plasma are calculated using the real geometry of Earth. It is observed that the impedance of the ionospheric plasma inall directions generally has high values for all seasons. The diagonal components of the tensor of the impedance are greater thanthe other components. It is also observed that the ionospheric plasma, generally, has weak conductivity in all directions and seasons.Impedance varies inversely with electron density. Hence, geomagnetic activity periods which lead to an increase in electron densitydecreases the impedance. It is observed that the ionospheric plasma has a reactive character in the geographic coordinates wherethe study was performed. The ionosphere displays a dielectric structure.
Anahtar Kelime: İyonosferik Plazmadaki Empedansın Mevsimsel Değişimi
Öz: İyonosfer, atmosferin 50 km ila 1000 km yükseklikleri arasında yer alan iyonlaşmış bir tabakadır. Bu tabaka, atmosferik iletkenlikte önemli bir rol oynar. İyonosfer büyük miktarda elektrik yüklü parçacıklara sahiptir ve bu nedenle radyo dalgalarının yayılımını etkiler. Bu çalışmada, iyonosferik plazmanın empedansı farklı mevsimler ve farklı jeomanyetik aktivite dönemleri için Yer’in gerçek geometrisi kullanılarak hesaplanmıştır. İyonosferik plazmanın empedansının her doğrultuda genel olarak her mevsim için büyük değerlere sahip olduğu gözlenmiştir. Empedans tensörünün diyagonal bileşenlerinin diğer bileşenlerden daha büyük olduğu bu çalışmada gözlenmiştir. Ayrıca iyonosferik plazmanın, genellikle, her yöne ve mevsimlerde zayıf iletkenliğe sahip olduğu gözlenmiştir. Empedansın, elektron yoğunluğuyla ters olarak değiştiği görülmüştür. Bu nedenle, elektron yoğunluğunda sapmalara neden olan jeomanyetik aktivitenin de empedansı azalttığı gözlenmiştir. İyonosferik plazmanın, çalışmanın yapıldığı coğrafi koordinatlarda reaktif bir karaktere sahip olduğu görülmüştür. İyonosfer, bir dielektrik yapı göstermiştir.
Anahtar Kelime: Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
- [1] Zhang, D.Y. “New method of calculating the transmission and reflection coefficients and fields in a magnetized plasma layer”, Radio Science, 26(6), 1415-1418, (1991).
- [2] Lundborg, B., Thide, B. “Standing wave pattern of HF radio waves in the ionospheric reflection regions 2. applications,” Radio Science, 21: 486-500, (1986).
- [3] Ratcliffe J.A. “The Magneto-ionic Theory and Its Applications to the Ionosphere”, Cambridge University Press, (1959).
- [4] Rishbeth, H. Garriott, O.K. “Introduction to Ionospheric Physics” Academic Press, (1969).
- [5] Budden, K.G. “The Propagation of Radio Waves”, Cambridge University Press, (1988).
- [6] Aydogdu, M. Ozcan, O. “Effects of magnetic declination on refractive index and wave polarization coefficients of electromagnetic waves in mid-latitude ionosphere”, Indian Journal of Radio and Space Physics, 25: 263-270, (1996).
- [7] Hagfors, T. “Electromagnetic wave propagation in a fieldaligned-striated cold magnetoplasma with application to the ionosphere”, Journal of Atmospheric SolarTerrestrial Physics, 46(3): 211-216, (1984).
- [8] Al’pert Ya.L. “The direction of the group velocity of electromagnetic waves in a multicomponent magnetoactive plasma in the frequency range 0<<”, Journal of Atmospheric Solar-Terrestrial Physics, 42(3): 205-216, (1980).
- [9] Aydogdu ,M., Yesil, A., Guzel E. “The group refractive indices of HF waves in the ionosphere and departure from the magnitude without collisions”, Journal of Atmospheric Solar-Terrestrial Physics 66(5): 343-348, (2004).
- [10] Atac, T., Ozguc, A., Pektas, R. “The variability of foF2 in different phases of solar cycle 23”, Journal of Atmospheric Solar-Terrestrial Physics 71(5): 583-588, (2009).
- [11] Aydogdu, M., Guzel, E., Yesil, A., Ozcan, O. Canyilmaz, M. “Comparison of the calculated absorption and the measured field strength HF waves reflected from the ionosphere”, Il Nuovo Cimento C, 30(3): 243-253, (2007).
- [12] Inan, U.S., Inan, A.S. “Electromagnetic Waves”, Prentice Hall, (2000).
- [13] Sturrock, P.A. “Plasma Physics”, Cambridge University Press, (1996).
- [14] Orfanidis, S.J. “Electromagnetic Waves and Antennas”, Rutgers University Press, (2004).
- [15] Baker, W.G. Martyn, D.F. “Electric currents in the ionosphere. I. The conductivity”, Philosophical Transactions of the Royal Society A, Mathematical Physical and Engineering Sciences, 246(913): 281-294, (1953).
- [16] Yesil, A. Unal, I. “Behaviour of Electromagnetic Waves in Different Media and Structures”, InTech, (2011).
- [17] Aydogdu, M., Ozcan, O. “The possible effects of the magnetic declination on the wave polarization coefficients at the cutoff point”, Progress in Electromagnetics Research-PIER, 30: 179-190, (2001).
- [18] Blioh, P.V., Nikolaenko A.P., Pilippov Yu.F. “Global'nye Èlektromagnitnye Rezonansy V Polosti Zemlâ-Ionosfera”, Naukova Dumka, (1977).
- [19] Whitten R.C., Poppoff, I.G. “Fundamentals of Aeronomy”, John Wiley & Sons Inc., (1971).
| APA | ÜNAL İ, Karatay S, YEŞİL a, Hancerliogullari A (2020). Seasonal variations of impedance in the ionospheric plasma. , 427 - 433. 10.2339/politeknik.514327 |
| Chicago | ÜNAL İbrahim,Karatay Secil,YEŞİL ali,Hancerliogullari Aybaba Seasonal variations of impedance in the ionospheric plasma. (2020): 427 - 433. 10.2339/politeknik.514327 |
| MLA | ÜNAL İbrahim,Karatay Secil,YEŞİL ali,Hancerliogullari Aybaba Seasonal variations of impedance in the ionospheric plasma. , 2020, ss.427 - 433. 10.2339/politeknik.514327 |
| AMA | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A Seasonal variations of impedance in the ionospheric plasma. . 2020; 427 - 433. 10.2339/politeknik.514327 |
| Vancouver | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A Seasonal variations of impedance in the ionospheric plasma. . 2020; 427 - 433. 10.2339/politeknik.514327 |
| IEEE | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A "Seasonal variations of impedance in the ionospheric plasma." , ss.427 - 433, 2020. 10.2339/politeknik.514327 |
| ISNAD | ÜNAL, İbrahim vd. "Seasonal variations of impedance in the ionospheric plasma". (2020), 427-433. https://doi.org/10.2339/politeknik.514327 |
| APA | ÜNAL İ, Karatay S, YEŞİL a, Hancerliogullari A (2020). Seasonal variations of impedance in the ionospheric plasma. Politeknik Dergisi, 23(2), 427 - 433. 10.2339/politeknik.514327 |
| Chicago | ÜNAL İbrahim,Karatay Secil,YEŞİL ali,Hancerliogullari Aybaba Seasonal variations of impedance in the ionospheric plasma. Politeknik Dergisi 23, no.2 (2020): 427 - 433. 10.2339/politeknik.514327 |
| MLA | ÜNAL İbrahim,Karatay Secil,YEŞİL ali,Hancerliogullari Aybaba Seasonal variations of impedance in the ionospheric plasma. Politeknik Dergisi, vol.23, no.2, 2020, ss.427 - 433. 10.2339/politeknik.514327 |
| AMA | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A Seasonal variations of impedance in the ionospheric plasma. Politeknik Dergisi. 2020; 23(2): 427 - 433. 10.2339/politeknik.514327 |
| Vancouver | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A Seasonal variations of impedance in the ionospheric plasma. Politeknik Dergisi. 2020; 23(2): 427 - 433. 10.2339/politeknik.514327 |
| IEEE | ÜNAL İ,Karatay S,YEŞİL a,Hancerliogullari A "Seasonal variations of impedance in the ionospheric plasma." Politeknik Dergisi, 23, ss.427 - 433, 2020. 10.2339/politeknik.514327 |
| ISNAD | ÜNAL, İbrahim vd. "Seasonal variations of impedance in the ionospheric plasma". Politeknik Dergisi 23/2 (2020), 427-433. https://doi.org/10.2339/politeknik.514327 |
