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- W2894543335 abstract "Abstract When different geophysical observables are sensitive to the same volume, it is possible to invert them simultaneously to jointly constrain different physical properties. The question addressed in this study is to determine which structures (e.g., interfaces) are common to different properties and which ones are separated. We present an algorithm for resolving the level of spatial coupling between physical properties and to enable both common and separate structures in the same model. The new approach, called structure decoupling (SD) algorithm, is based on a Bayesian trans‐dimensional adaptive parameterization, where models can display the full spectra of spatial coupling between physical properties, from fully coupled models, that is, where identical model geometries are imposed across all inverted properties, to completely decoupled models, where an independent parameterization is used for each property. We apply the algorithm to three 1‐D geophysical inverse problems, using both synthetic and field data. For the synthetic cases, we compare the SD algorithm to standard Markov chain Monte Carlo and reversible‐jump Markov chain Monte Carlo approaches that use either fully coupled or fully decoupled parameterizations. In case of coupled structures, the SD algorithm does not behave differently from methods that assume common interfaces. In case of decoupled structures, the SD approach is demonstrated to correctly retrieve the portion of profiles where the physical properties do not share the same structure. The application of the new algorithm to field data demonstrates its ability to decouple structures where a common stratification is not supported by the data." @default.
- W2894543335 created "2018-10-05" @default.
- W2894543335 creator A5070929298 @default.
- W2894543335 creator A5075554992 @default.
- W2894543335 date "2018-10-01" @default.
- W2894543335 modified "2023-10-10" @default.
- W2894543335 title "Flexible Coupling in Joint Inversions: A Bayesian Structure Decoupling Algorithm" @default.
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- W2894543335 doi "https://doi.org/10.1029/2018jb016079" @default.
- W2894543335 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6282997" @default.
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- W2894543335 hasPublicationYear "2018" @default.
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