The Group and Phase Velocity of the Ordinary Wawe in the Ionosphere A Complete Solution and Numerical Analysis

Year 2024, Volume: 10 Issue: 1, 202 - 208, 30.06.2024

Kadri Kurt Melik Buğra Yeşil Gülay Yıldız

https://doi.org/10.29132/ijpas.1464763

Abstract

The ionosphere is a conductive and natural plasma layer of the atmosphere that starts from 50 km above the ground and continues up to approximately 1000 km. To neglect the magnetic field effect on the ionosphere, both vertical and horizontal ionosondes are used to detect the electron density of the ionosphere in many parts of the Earth. In this study, in ionosphere plasma; Without any approximation, the phase and group velocities of the ordinari wave, which is independent of the magnetic field in the collisional ionosphere plasma (electron-ion; electron-neutral), were obtained analyt-ically and its seasonal behavior was calculated numerically. According to the results obtained; There is a strong similarity between the change trends in the phase and group velocities of the ordinari wave at local times of 05:00 in the morning and 20:00 in the evening. It can be said that in these time intervals in the E and F regions of the ionosphere, the wave energy is constant and the directions of the phase and group velocities are in the same direction but in opposite directions.

Keywords

Ionesphrere, Ordinary Wawe, Group-Phase Velocity

İyonküredeki Ordinari Dalganın Grup ve Faz Hızı; Tam Çözüm ve Sayısal Analizler

Abstract

İyonosfer yerden 50 km den başlayıp yaklaşık olarak 1000 km ye kadar devam eden atmosferin iletken ve doğal bir plazma tabakasıdır. İyonkürede manyetik alan etkisini ihmal etmek için hem dikey hem de yatay iyonosondalar, Dünya'nın birçok yerinde iyonosferin elektron yoğunluğunu tespit etmek için kullanılmaktadır. Bu çalışmada iyonküre plazmasında; hiçbir yaklaşım yap-madan, çarpışmalı iyonküre plazmasın-da(elektron-iyon; elektron-nötr) manyetik alandan bağımsız olan ordinari dalganın faz ve grup hızları analitik olarak elde edilerek, mevsimsel dav-ranışı nümerik olarak hesaplanmıştır. Elde edilen sonuçlara göre; ordinari dalganın faz ve grup hızları sabah saat 05.00 ve akşam saat 20.00 yerel zamanlarında değişim trendleri arasında kuvvetli bir benzerlik görülmektedir. İyonosferin E ve F bölgelerinde bu zaman aralıklarında dalga enerjisinin sabit, faz ve grup hızlarının yönlerinin aynı doğrultuda fakat zıt yönde olduğu söylenebilir.

Keywords

İyonküre, Ordinari dalga, Grup-Faz hızı

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