Thermomechanical modeling of the El Salvador subduction zone: Thermal structure and slab dehydration
Description
This dataset contains present-day (0 Ma) slab-related output from the preferred three-dimensional thermomechanical model of the El Salvador subduction zone. The preferred model was constrained by surface heat-flow data and uses a trench advance rate of 1.0 cm/yr, an effective coefficient of friction of 0.005, and a spatially non-uniform initial temperature distribution, without a low-viscosity layer along the plate interface. To limit file size, the archived files contain only grid points associated with the modeled slab and selected surfaces relative to the slab upper boundary, rather than the full three-dimensional computational domain. The files include geographic coordinates, model coordinates, temperature, equilibrium maximum water content, dehydration gradient, and additional model variables depending on the file type. These data underlie the slab-temperature and dehydration results presented in the associated manuscript, including comparisons with coseismic slip and afterslip of the 2012 Mw 7.3 interplate earthquake, intraslab seismicity, and the volcanic front (Figs. 3–6).
Files
Steps to reproduce
The archived files were extracted from the present-day (0 Ma) output of the preferred three-dimensional thermomechanical model of the El Salvador subduction zone. The preferred model uses a trench advance rate of 1.0 cm/yr, an effective coefficient of friction of 0.005, and a spatially non-uniform initial temperature distribution, without a low-viscosity layer along the plate interface. Only grid points associated with the modeled slab and selected surfaces relative to the slab upper boundary were extracted from the full Stag3D model output to reduce the archive size. The columns provide geographic and model coordinates, temperature, equilibrium maximum water content, dehydration gradient, and additional variables depending on the file type. Details of the model setup, governing equations, phase-diagram treatment, and analysis procedures are described in the associated manuscript and Supporting Information. The archived data can be filtered and plotted using the geographic and model coordinates, slab-material identifiers, and slab-relative positions to reproduce the slab-temperature and dehydration analyses and visualizations reported in the study.
Institutions
- Kobe UniversityHyōgo, Kobe
Categories
Funders
- Japan Science and Technology AgencyMinistry of Education, Culture, Sports, Science and TechnologyTokyo, TokyoGrant ID: JPMJSA2310