İyonosfer Dinamiğinin Analizi ve Model Tanıma Çalışmaları

Abstract

Ionosphere is the outer layer of the atmosphere. The major property of the ionosphere is the ionization of ionospheric layers by solar radiation. Because of ionozation in the ionosphere, the ionosphere plays important role in electromagnetic wave propagation. Ionospheric modelling is of great importance in short wave communication as well as in satellite based navigation. The aim of this thesis is to model the ionosphere based on the vertical electron content time series which were estimated indirectly on the specific locations of the Earth via IONOLAB-TEC methodology. Targeted ionospheric models are closedbox type models that are compatible with the estimated time series. Identification of ionospheric time series models are accomplished via a novel method based on canonical correlation analysis. Another goal of the study is to determine the periodic structures observed in VTEC time series. Within this framework, the effects of tidal waves from the Moon and Earth’s Free Oscillations are observed from VTEC time series.