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  Near source adjustment factors versus 2023 Turkish strong-motion records

Ramadan, F., lanzano, g., pacor, f., felicetta, c., luzi, l., sgobba, s., Smerzini, c., damico, m. (2023): Near source adjustment factors versus 2023 Turkish strong-motion records, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4386

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021817 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021817_1
Genre: Conference Paper

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 Creators:
Ramadan, Fadel1, Author
lanzano, giovanni1, Author
pacor, francesca1, Author
felicetta, chiara1, Author
luzi, lucia1, Author
sgobba, sara1, Author
Smerzini, chiara1, Author
damico, maria1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Within the proximity of the source of medium-to-large earthquakes, seismic ground motion exhibits peculiar characteristics that can hardly be reproduced by global and regional empirical models (GMMs), usually adopted for hazard assessments and shaking scenarios. High amplitudes (in terms of peak values and spectral ordinates), velocity pulses, vertical motions greater than their horizontal counterparts, and permanent displacements are some of the characteristics observed during strong worldwide earthquakes. The paucity of near source observables does not allow the calibration of robust empirical models for their prediction, and to overcome this limitation, adjustment factors have recently been calibrated to be applied to classical GMMs for several ground motion parameters using the NESS recording dataset.The recent earthquake sequence in Turkey produced a large amount of near source recordings close to the different activated fault segments, which provide an opportunity on the one hand to validate the previously calibrated adjustment factors and on the other hand to investigate the characteristics of additional shaking parameters related to energy content and release mode, such as waveform envelopes, arias intensity and duration. Keywords: Turkish event, ground motion models, near source features and intensity measures.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4386
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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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