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  Multi-instrument surveying for pre-earthquake transient features of atmosphere-ionosphere. Case studies for 2021 – a year of global seismic unrest

Ouzounov, D., Shen, X., Pulinets, S., Liu, T., Katsumi, H., Yan, R., Dmitry, D., Kafatos, M., Petrov, L., Taylor, P. (2023): Multi-instrument surveying for pre-earthquake transient features of atmosphere-ionosphere. Case studies for 2021 – a year of global seismic unrest, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3151

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020494 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020494_1
Genre: Konferenzbeitrag

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 Urheber:
Ouzounov, Dimitar1, Autor
Shen, Xuhei1, Autor
Pulinets, Sergey1, Autor
Liu, Tiger1, Autor
Katsumi, Hattori1, Autor
Yan, Rui1, Autor
Dmitry, Davidenko1, Autor
Kafatos, Menas1, Autor
Petrov, Leonid1, Autor
Taylor, Patrick1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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Schlagwörter: -
 Zusammenfassung: We present a multi-parameter study of transient phenomena observed in the Earth's atmosphere-ionosphere environment plausibly associated with the latest major seismic activities in 2021. The year 2021 was the most active period for global seismicity since 2007, with 19 major earthquakes (M7+), three of which were over M8.0. The M 7.2 in Haiti was the deadliest for 2021, with 2,476 fatalities (USGS).We monitored critical processes in the atmosphere /ionosphere that modify the Earth's plasma environment system under various geophysical conditions, including earthquakes. We collected operational data from several instruments:1. Electric field and plasma observations from the China/Italy Seismo-Electromagnetic Satellite (CSES1); 2/ Outgoing long-wavelength radiation (OLR) obtained from NPOESS); 2/ Atmospheric chemical potential (ACP) obtained from NASA assimilation models; and 3/ Electron density variations in the ionosphere via GPS Total Electron Content (GPS/TEC).We observed a synergetic abnormal response of satellite OLR data, plasma data from CSES, and GPS/TEC and ACP starting two weeks before the M 8.1 - South Sandwich; M 8.2 – Alaska, US; M 8.1 - Kermadec Islands, NZ, and M 7.2 - Nippes, Haiti earthquake. Our integrating data search reveals different abnormal patterns inside the Dobrovolsky-Bowman estimating earthquake preparation zone. We show that by combining the near-space and ground data accordingly to the physical concept of the Lithosphere-Atmosphere-Ionosphere Coupling (LAIC), we could identify, on a regional basis, abnormal patterns of pre-earthquake-related features in the atmosphere-ionosphere environment. The implications of studying major earthquake events are discussed.

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Sprache(n): eng - Englisch
 Datum: 2023-07-112023-07-11
 Publikationsstatus: Final veröffentlicht
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 Inhaltsverzeichnis: -
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 Identifikatoren: DOI: 10.57757/IUGG23-3151
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Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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