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  Investigating dynamic triggering in Vrancea (Romania) from the Feb 6th Turkey-Syria earthquake

Petrescu, L., Enescu, B., Borleanu, F., Poiata, N., Radulian, M., Working Group, A. (2023): Investigating dynamic triggering in Vrancea (Romania) from the Feb 6th Turkey-Syria earthquake, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4061

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021501 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021501_1
Genre: Conference Paper

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 Creators:
Petrescu, Laura1, Author
Enescu, Bogdan1, Author
Borleanu, Felix1, Author
Poiata, Natalia1, Author
Radulian, Mircea1, Author
Working Group, Afros1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The Mw 7.8 Turkey-Syria earthquake occurred on 6th of February 2023 in central Turkey at a depth of 20 km on the active East Anatolian Fault. Approximately 9 minutes later, a ML 3.1 earthquake occurred ~1500 km away in the Vrancea Seismic Zone in Romania, at 22 km depth. Ground motion records from broadband seismic stations located near the epicentre of the Vrancea earthquake clearly show high-frequency P-wave arrivals recorded during the passage of long period, high amplitude Rayleigh waves radiated by the Turkey-Syria earthquake. We interpret this observation as first-hand evidence of dynamic triggering of crustal earthquakes in Vrancea by remote earthquakes. We estimate the probability that this particular event is a random occurrence based on the observed local seismicity rates. Furthermore, using information such as epicentral distance, hypocentral depth and source mechanism for the Vrancea earthquake, we model the transient stress tensor on the fault plane due to the passage of Rayleigh waves at discrete periods.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4061
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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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