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  A quantitative archaeoseismic approach to constrain ground motion features of the 1919 earthquake in Sant'Agata del Mugello (Tuscany, Italy)

Arnaud, M., Cédric, G., E. Diego, M., Hélène, L.-C., Hélène, D., Maria, L. (2023): A quantitative archaeoseismic approach to constrain ground motion features of the 1919 earthquake in Sant'Agata del Mugello (Tuscany, Italy), XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4664

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021073 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021073_1
Genre: Conference Paper

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 Creators:
Arnaud, Montabert1, Author
Cédric, Giry1, Author
E. Diego, Mercerat1, Author
Hélène, Lyon-Caen1, Author
Hélène, Dessales1, Author
Maria, Lancieri1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Do we have any idea about the ground motion features associated with a pre-instrumental earthquake? We propose a protocol based on the idea that historical buildings may record ancient tremors. Their effects may be read from direct traces or deduced from reconstruction phases. The medieval church of Sant'Agata del Mugello (Tuscany, Italy) is used as a case study to illustrate the interdisciplinary approach based on building archaeology, earthquake engineering, and engineering seismology. According to archives, the church was damaged by the 1542 and 1611 earthquakes (Mw 5.8 and Mw 5.1) but resisted the 1919 earthquake (Mw 6.2). Archives data and stratigraphic analysis give the key elements to trace back the state of the building before and after each historical earthquake. The geometrical survey, stratigraphic analysis, and Ambient Vibration Testing allow calibrating of a Finite Element model of the church. An innovative static non-linear analysis provides the elastic limit of key control points to follow the response of the building to the seismic loading. The linear updated model is then used to discriminate ground motion compatible with the observed failure mechanisms of the medieval church. Finally, prospective Intensity Measures such as Peak Ground Acceleration, Arias, Housner Intensity (etc.) of the 1919 earthquake are discussed.

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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/IUGG23-4664
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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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