2016 Yılı 6 Mw ≥ 7.0 Depremin İyonküre Değişimlerinin İncelenmesi

Yıl 2018, , 35 - 47, 15.04.2018

Erman Şentürk , Murat Selim Çepni

https://doi.org/10.29128/geomatik.331208

Cited By: 1

Öz

Çalışmada,
orta enlem bölgesinde 2016 yılında meydana gelen büyüklüğü 7’den yüksek 6
depremin deprem öncesi, deprem günü ve deprem sonrası olmak üzere 15 günlük
zaman aralığında iyonküre değişimleri
CODE-GIM’den elde edilen deprem dış merkezine ait toplam elektron içeriği (TEİ)
değerleri ile incelenmiştir. İyonkürede meydana gelen aykırılıkları ve anormal
günleri belirlemek amacıyla çeyrek açıklık tabanlı kayan ortanca yöntemi
kullanılmıştır. 15 günlük dönemde elde edilen TEİ değerlerinden üst ve alt
sınırı geçen zaman aralıkları sırasıyla pozitif ve negatif anormal gün olarak
belirlenmiştir. Belirlenen anormal günlerdeki aykırılıkların sismik kaynaklı
olduğu düşüncesini güçlendirmek amacıyla iyonküre uzay iklim koşullarını temsil
eden Dst, Kp jeomanyetik ve F10.7 güneşsel indisleri ilgili zaman aralıklarında
incelenmiştir. Hareketli ve sakin günler belirlenerek sakin günlere denk gelen aykırılıkların
sismik kaynaklı olabileceği ön planda tutulmuştur. 6 depremin 5’inde deprem öncesi
aykırılıklara rastlanmıştır. Buna göre başarı oranı %80’dir. İlgili günlerdeki iyonküre
uzay iklim koşullarının sakin olmasında dolayı belirlenen aykırılıkların sismik
kaynaklı olabileceği sonucuna varılmıştır.

Anahtar Kelimeler

CODE-GIM, Deprem, İyonküre, Toplam elektron içeriği

Kaynakça

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