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  Head-wave correlations from ambient noise in a shallow ocean waveguide with a layered seabed

Li, J., Siderius, M., Gerstoft, P., Fan, J., Muzi, L. (2023): Head-wave correlations from ambient noise in a shallow ocean waveguide with a layered seabed, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1392

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Item Permalink: https://gfzpublic.gfz.de/pubman/item/item_5017209 Version Permalink: https://gfzpublic.gfz.de/pubman/item/item_5017209_1
Genre: Conference Paper

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 Creators:
Li, Jie1, Author
Siderius, Martin1, Author
Gerstoft, Peter1, Author
Fan, Jun1, Author
Muzi, Lanfranco1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: In this study, we derive the travel times and angles of arrival of head-wave correlations from ocean ambient noise in a shallow ocean waveguide with a layered seabed using a vertical line array. The up- and down-going head waves from the same sediment interface are correlated, and their travel time differences give the travel times of head-wave correlations. The angles of arrival of head-wave correlations from different interfaces depend on the sound speeds in the water and seabed layers according to Snell’s law. The head-wave correlations from the water-sediment interface are periodic in time, while those from deeper interfaces show a more complicated time arrival structure. Combining the travel times and angles of arrival of head-wave correlations from different interfaces, it is able to invert for all the sound speeds and layer thicknesses in the water and seabed. The simulation with wind noise and a sediment layer over a half-space seabed verifies the inversion performance.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-1392
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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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