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  Determination of the seismic structure of the Earth’s mantle based on joint analysis of gravimetric and seismometric data

Wilde-Piorko, M., Karkowska, K., Dykowski, P., Sękowski, M., Polkowski, M. (2023): Determination of the seismic structure of the Earth’s mantle based on joint analysis of gravimetric and seismometric data, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3564

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020594 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020594_1
Genre: Conference Paper

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Wilde-Piorko, Monika1, Author
Karkowska, Kamila1, Author
Dykowski, Przemyslaw1, Author
Sękowski, Marcin1, Author
Polkowski, Marcin1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: This study presents a new concept of joint analysis of the gravimetric and seismometric recordings of earthquakes for determining the seismic structure of the Earth’s mantle. The proposed method allows using gravimetric data without the known full transfer function of the instrument. Group and phase velocity dispersion curves of the fundamental mode of Rayleigh waves are measured from recordings of superconducting gravimeter and broad-band seismometers operating at the same location, allowing for exploration of a broader response for incoming seismic waves. The analysed sites, the Yebes, Larzac, Wettzell, Pecny and Borowa Góra Observatories, are located along the profile going from central Spain to central Poland and crossing the main tectonic unite of Europe – the Trans-European Suture Zone. Calculated dispersion curves are inverted by the weighted linear inversion and Monte Carlo methods to estimate a distribution of shear-wave seismic velocity in the Earth’s mantle. A comparison of the deterministic and probabilistic inversion methods can excellently demonstrate surface waves’ ability to determine the Earth’s mantle structure.This work was done within the research project No. 2017/27/B/ST10/01600 financed from the Polish National Science Centre funds.

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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/IUGG23-3564
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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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