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  Seismicity and Tectonics of the Caucasus Region Revisited

Bondár, I., Godoladze, T., Cowgill, E., Yetirmishli, G., Myers, S., Onur, T., Gunia, I., Buzaladze, A., Gök, R., Chiang, A. (2023): Seismicity and Tectonics of the Caucasus Region Revisited, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1649

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017955 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017955_2
Genre: Konferenzbeitrag

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 Urheber:
Bondár, István1, Autor
Godoladze, Tea1, Autor
Cowgill, Eric1, Autor
Yetirmishli, Gurban1, Autor
Myers, Stephen1, Autor
Onur, Tuna1, Autor
Gunia, Irakli1, Autor
Buzaladze, Albert1, Autor
Gök, Rengin1, Autor
Chiang, Andrea1, 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: Despite its role in Arabia-Eurasia convergence between the Black and Caspian Seas, the Caucasus region lacks a comprehensive catalog. To address the issue, the Lawrence Livermore National Laboratory and the Institute of Earth Sciences (IES) at Ilia State University generated a new, comprehensive seismic catalog for the Caucasus region by combining data in the IES bulletin with bulletins of the Republic Seismic Survey Center of Azerbaijan, monitoring centers in Turkey and Armenia, and the ISC covering the period 1951 to 2019. We present the bulletin that contains some 20,000 relocated events. We first relocated each event using the single-event location algorithm iLoc and RSTT predictions and identified GT events. Then we relocated the entire seismicity of the Caucasus region with the multiple-event location algorithm Bayesloc, using the iLoc results as initial locations and the GT events as constraints. We show that each relocation step leads to significant improvements, as indicated by tightening of event clusters. The improved view of the seismicity reveals a narrow band of crustal events along the southern flank of the Greater Caucasus we interpret as a megathrust, and confirms both a region of deep seismicity beneath the northeastern Caucasus and a possible area of slab detachment in the central part of the range.

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-1649
 Art des Abschluß: -

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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