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  Spatial analyses on seismo-ionospheric anomalies of total electron content before the 6 February 2023 M7.8 and M7.5 Turkey Earthquakes

Liu, J.-Y., Wen, Y.-C., Chen, Y.-I., Chang, F.-Y., Cheng, C.-C., Chao, C.-K. (2023): Spatial analyses on seismo-ionospheric anomalies of total electron content before the 6 February 2023 M7.8 and M7.5 Turkey Earthquakes, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4362

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021795 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021795_1
Genre: Conference Paper

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 Creators:
Liu, Jann-Yenq1, Author
Wen, Yun-Cheng1, Author
Chen, Yuh-Ing1, Author
Chang, Fu-Yuan1, Author
Cheng, Ching-Chung1, Author
Chao, Chi-Kuang1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: On 6 February 2023 at 01:17 UTC, an M7.8 earthquake occurred in South-Eastern Turkey (37.2°N 37.0°E, 10.0 km depth), and several strong aftershocks have also been observed in the region, notably a magnitude M7.5 (38.0°N 37.2°E, 10 km depth) at 10:24 UTC the same day. Spatial analyses of the total electron content (TEC) of the global ionosphere map (GIM) are employed to observe the latitude-longitude distributions of seismo-ionospheric anomalies (SIAs) during January-February 2023. A global search of 5183 (=73x71) lattices shows that SIAs of significant TEC increases specifically appear near the epicenter on day 24-22 (12-16 January) and 2-0 (4-6 February) before the two earthquakes. The ion density and ion velocity measured by the science payload of Advanced ionospheric Probe (AIP) onboard the FORMOSAT-5 (F5) satellite and the EIA (equatorial ionization crest) distances between northern and southern hemispheres of GIM TEC are used to find the ionospheric electric fields over the epicenter area during the two periods of 12-16 January and 4-6 February 2023.https://earthquake.usgs.gov/earthquakes/eventpage/us6000jllzhttps://earthquake.usgs.gov/earthquakes/eventpage/us6000jlqa

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-4362
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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