Comparison of coupling methods in joint inversion along the Namibian continental margin.

Franz, Gesa, Moorkamp, Max, Jegen, Marion , Berndt, Christian and Rabbel, Wolfgang (2020) Comparison of coupling methods in joint inversion along the Namibian continental margin. Open Access [Poster] In: EGU General Assembly 2020. , 03.05.-08.05.2020, Vienna, Austria - Online . DOI 10.5194/egusphere-egu2020-20720.

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Geophysical inversion always faces the problem of ambiguity, where several earth models can describe the same data. To tackle this issue, additional information can be integrated by joint inversion of different data sets (Heincke et al., 2017; Moorkamp, 2017; Moorkamp et al., 2011), or by cooperative inversion through relating physical models derived from independent data (Bedrosian, 2007; Gallardo, 2004; Haber & Oldenburg, 1997; Lines et al., 1987; Paasche & Tronicke, 2007).Here we present our recent results of joint- and cooperative inversions along the Namibian passive continental margin and Walvis Ridge investigating break-up related magmatism. Jegen et al. (2016), presents a resistivity model derived from Magnetotelluric data acquired in 2011 (SAMPLE project). We reevaluate this data due to a previous rotation error, and implement three additional set ups, wherea)MT data inversion is constrained by a geological model derived from gravity modeling (Maystrenko et al., 2013)b)marine MT- and satellite gravity data are jointly inverted with a common objective functionc)a 2D velocity model (Fromm et al., 2017) is used as a structural constraint in 3D MT inversion

Document Type: Conference or Workshop Item (Poster)
Keywords: coupling methods, joint inversion, Namibia, continental margin
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Kiel University
Date Deposited: 15 Jan 2021 12:47
Last Modified: 18 Jan 2021 12:06

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