Toplam Elektron İçeriği (TEC) Değerleri ve Deprem İlişkisinin İncelenmesi

Yıl 2014, Cilt: 4 Sayı: 1, 107 - 116, 11.03.2014

Mustafa Ulukavak Mualla Yalçınkaya

https://doi.org/10.17714/gufbed.2014.04.008

Öz

Sismik aktivitelerin iyonosfer tabakası üzerindeki etkileri konusunda birçok araştırma yapılmaktadır. Depremin yıkıcı etkilerine karşı önlem alabilmek için depremin meydana geliş zamanının önceden kestirilebilmesi önemlidir. Yerkürede meydana gelen kabuk hareketlerinin etkileri sadece sarsıntı olarak değil insanoğlunun direkt algılayamadığı değişimlere de yol açmaktadır. Bu değişimler farklı yöntem ve cihazlarla tespiti yapılacak şekilde modellenebilmektedir.Bu yöntemlerin incelenmesindeki temel parametrelerden birisi de Toplam Elektron İçeriği (TEC)değerinindeğişimidir.TEC, GPS alıcısı ile her bir GPS uydusu arasındaki sinyal yolunda bulunan toplam elektron sayısı olarak tanımlanır.İyonosferin radyo sinyalleri üzerindeki etkilerinden faydalanarakTECparametresiortayaçıkarılmıştır.Deprem öncüllerinin belirlenmesinde de deprem öncesi iyonosferde meydana gelen değişimlerin araştırılması bu açıdan yararlı olacaktır. Bu amaçla deprem öncesi ve sonrasıiyonosferde meydana gelen değişimlerinGPS sinyallerinden elde edilen TECdeğerleri ileberaber modellenerek aralarındaki ilişkinin ortaya çıkarılması gerekmektedir.

Anahtar Kelimeler

Toplam Elektron İçeriği (TEC), GPS, İyonosfer, Deprem Öncülleri

The Relationship Between Total Electron Content (TEC) Values and Earthquake

Öz

Research has been done on the effects of seismic activity on a layer of the ionosphere. To counter act the devastating effects of the earth quake, occurrence time of the earthquake is important for pre-estimating. Effects occurring in the earthcrust cannot be detected only as a shake. These changes will be modeled with using different methods and devices. One of the main parameters of these methods is Total Electron Content (TEC) values change. TEC is defined as the total number of electrons in the signal path between the GPS receiver and each GPS satellite. Advantage of the effects of the ionosphere on radio signals revealed TEC parameter. Determination of earthquake precursors before the earthquake investigation, the changes in the ionosphere will be useful in this respect. For this purpose, before and after the earthquake, the changes in the ionospheric TEC values ​​obtained from the GPS signals are required for modeling with the discovery of the relationship between these parameters.

Anahtar Kelimeler

Total Electron Content (TEC), GPS, İonosphere, Earthquake Precursors.

Kaynakça

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