Seismo ionospheric anomalies in Turkey associated withMw 6.0 earthquakes detected by GPS stations and GIM TEC      
Yazarlar (7)
Munawar Shah
Institute Of Space Technology, Islamabad, Pakistan
Prof. Dr. Samed İNYURT Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Muhsan Ehsan
Bahria University, Pakistan
Arslan Ahmed
Sukkur Iba University, Pakistan
Muhammad Shakir
Institute Of Space Technology, Islamabad, Pakistan
Saleem Ullah
Institute Of Space Technology, Islamabad, Pakistan
Muhammad Shahid Iqbal
Institute Of Space Technology, Islamabad, Pakistan
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Advances in Space Research
Dergi ISSN 0273-1177 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 06-2020
Cilt No 65
Sayı 11
Sayfalar 2540 / 2550
DOI Numarası 10.1016/j.asr.2020.03.005
Özet
Earthquake (EQ) anomalies in the form of enhancement and depletion in ionospheric Total Electron Content (TEC) from Global Positioning System (GPS) may considerably alarm about short and long term precursors of the impending main shock. In this paper, TEC anomalies are investigated from permanent GPS ground-stations in Turkey associated to Mw ≥ 6.0 EQs occurred in 2011–2012. Temporal and spatial analyses of TEC at 2 h sampling have shown significant evidences about EQ induced ionospheric anomalies during 10–14 h of UT (Universal Time) within 5 days before Mw 6.0 Greece, and Mw 7.1, Turkish EQ. Spatial analyses have manifested arrival of TEC anomalies at UT = 10 h to epicenter of both EQs, which linger above epicenter during UT = 12–14 h and left seismogenic zone after UT = 14 h before every EQ during Kp < 3 and Dst = 0 nT. Meanwhile, a geomagnetic storm (Dst < -100 nT) induce perturbation two days after the Mw 7.1 Turkish EQ, showing no relation with epicenter during spatial analysis. It also shows that TEC can be useful to distinguish geomagnetic storm variations to successfully detect EQ precursors. These anomalies during quiet storm (Kp < 3; Dst = 0 nT) conditions may be effective to link the lithosphere and ionosphere in severe seismic zones to detect EQ precursors before future EQs. Interpretation of TEC anomalies and it enhancements over EQ epicenters during UT = 12–14 h for both EQs have shown that EQs anomalies only occurred in particular time. Whereas, geomagnetic storm effect occurred during whole abnormal day over the Earth.
Anahtar Kelimeler
Earthquakes | Geomagnetic storm | GPS TEC