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Bathymetry inversion using full tensors of gravity gradients

Urheber*innen

Wan,  Xiaoyun
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Richard Fiifi,  Annan
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Wang,  Huaibing
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Zitation

Wan, X., Richard Fiifi, A., Wang, H. (2023): Bathymetry inversion using full tensors of gravity gradients, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0082


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017010
Zusammenfassung
Gravity field products can be used to derive bathymetry. However, previous studies usually adopted gravity anomalies and vertical gravity gradients. Indeed, gravity gradient tensor has six components, all of which should contain bathymetric information. In this study, the formulas for deriving bathymetry using full tensor of gravity gradients are firstly derived, and then full tensors of gravity gradients in the study area are derived using satellite altimetry observations; Finally, the proposed algorithm is verified by numerical experiments. The results show that all the components can be used to derive bathymetry, but they have different performance in the inversion. The possible causes are analyzed correspondingly.