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- W4313461527 abstract "Abstract. Trace elements and isotopes (TEIs) are important tools in studying ocean biogeochemistry. Understanding their modern ocean budgets and using their sedimentary records to reconstruct paleoceanographic conditions require mechanistic understanding of the diagenesis of TEIs, yet the lack of appropriate modeling tools has limited our ability to perform such research. Here we introduce SedTrace, a modeling framework that can be used to generate reactive-transport code for modeling marine sediment diagenesis and assist model simulation using advanced numerical tools in Julia. SedTrace enables mechanistic TEI modeling by providing flexible tools of pH and speciation modeling, which are essential in studying TEI diagenesis. SedTrace is designed to solve one particular challenge facing the users of diagenetic models: existing models are usually case-specific and not easily adaptable for new problems, such that the user has to choose between modifying published code and writing their own code, both of which demand strong coding skills. To lower this barrier, SedTrace can generate diagenetic models only requiring the user to supply Excel spreadsheets containing necessary model information. The resulting code is clearly structured and readable, and is integrated with Julia’s differential equation solving ecosystems, utilizing tools such as automatic differentiation, sparse numerical methods, Newton-Krylov solvers and preconditioner. This allows efficient solution of large systems of stiff diagenetic equations. We demonstrate the capacity of SedTrace using case studies of modeling the diagenesis of pH, radiogenic and stable isotopes of TEIs." @default.
- W4313461527 created "2023-01-06" @default.
- W4313461527 creator A5067288994 @default.
- W4313461527 date "2023-01-04" @default.
- W4313461527 modified "2023-09-30" @default.
- W4313461527 title "SedTrace 1.0: a Julia-based framework for generating and running reactive-transport models of marine sediment diagenesis specializing in trace elements and isotopes" @default.
- W4313461527 doi "https://doi.org/10.5194/gmd-2022-281" @default.
- W4313461527 hasPublicationYear "2023" @default.
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