Abstract
Abstract. The Geodynamic World Builder is an open-source code library intended to set up initial conditions for computational geodynamic models in both Cartesian and spherical geometries. The inputs for the JavaScript Object Notation (JSON)-style parameter file are not mathematical but rather a structured nested list describing tectonic features, e.g., a continental, an oceanic or a subducting plate. Each of these tectonic features can be assigned a specific temperature profile (e.g., plate model) or composition label (e.g., uniform). For each point in space, the Geodynamic World Builder can return the composition and/or temperature. It is written in C++ but can be used in almost any language through its C and Fortran wrappers. Various examples of 2-D and 3-D subduction settings are presented. The Geodynamic World Builder comes with an extensive online user manual.
Highlights
Geodynamic modeling has been used in the past four decades to help us better understand the physical processes of Earth’s interior, including large-scale mantle convection and plate tectonics, or detailed processes of crustal deformation
We present in this paper a solution to these problems in the form of an open-source code library, the Geodynamic World Builder (GWB), which has been designed to be user-friendly, extensible and portable across different platforms
We presented the Geodynamic World Builder version 0.2.0 as a tool for constructing 2-D and 3-D initial models of geodynamic settings involving crust/lithosphere, plate boundaries and subduction
Summary
Geodynamic modeling has been used in the past four decades to help us better understand the physical processes of Earth’s interior, including large-scale mantle convection and plate tectonics, or detailed processes of crustal deformation. When numerically simulating (regions of) the Earth, geometrically more complex initial models are required, e.g., involving the starting plate tectonic layout, initial trench geometry and slab shape for use in either instantaneous dynamics modeling or as an initial model for modeling of subduction evolution (e.g., Alisic et al, 2012; Liu and Stegman, 2011; Jadamec and Billen, 2010, 2012; Chertova et al, 2014; Billen and Arredondo, 2018; Zhou et al, 2018) Such initial model setups cannot be created, adapted or shared with the community, nor transferred to another code. We present the first stable version of the GWB which focuses on creating geometrically complex 3-D initial models (geometry, composition and temperature) consisting of first-order plate tectonic features such as continental and oceanic plates, oceanic ridges and transform faults and 3-D lithosphere subduction These configured initial models are intended to help advance research into simulations instantaneous dynamic modeling and of plate tectonic evolution with a wide range of geometric complexity
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