Supplementary material: "A Revised Oceanic Plate Cooling Model"

Supplementary material for "A Revised Oceanic Plate Cooling Model" by Holdt M. C., White, N. J., & Richards, F. D., submitted for publication in Journal of Geophysical Research: Solid Earth. This repository contains data (age-depth, heat flow) and code (Python, Fortran) to compute the thermal evolution of oceanic lithosphere. Three best-fit models (HWR-1, HWR-2 and HWR-3) have been identified. Please see Holdt et al., (in review) for a detailed discussion of these models.

Repository Structure: 

Data

This directory contains age-depth and heat flow measurements.These measurements are included as both binned and unbinned datasets (see Figure 2).

Code

This directory contains code used to generate plate models, identify the best-fit model and plot results.

    a) run plate_model_generation.* to generate plate models that sweep though ranges for Tp, zp and zr (output directory: plate_model_output).

    b) run 01_plate_model_sweep_SOURCE*.sh to identify best-fit model (output directory: plate_model_output_RMS_misfit, plate_model_output_FINAL).

    c) run 02_plate_model_sweep_PLOT.sh to plot figures (output directory: plate_model_output_PLOTS).

Please note that this code was originally written for a study by Richards et al., 2018. The parameterization of this code was subsequently updated by Richards et al., 2020 and by Holdt et al., 2022. It has been further modified for this study (Holdt et al., in review), with detailed comments included in the code. If using the code, please cite Richards et al., 2018. If using the specific model outputs and/or input parameterizations of HWR-1, HWR-2, or HWR-3, please cite Holdt et al., (in review). 

Models

This directory contains the final models (HWR-1, HWR-2, HWR-3) presented in Holdt et al., (in review).

Citations

Holdt M. C., White, N. J., & Richards, F. D. (in review). A Revised Oceanic Plate Cooling Model. Journal of Geophysical Research: Solid Earth

Holdt, M. C., White, N. J., Stephenson, S. N., & Conway-Jones, B. W. (2022). Densely Sampled Global Dynamic Topographic Observations and Their Significance. Journal of Geophysical Research: Solid Earth, 127 (7), e2022JB024391. doi: 10.1029/2022JB024391

Richards, F. D., Hoggard, M., Crosby, A., Ghelichkhan, S., & White, N. J. (2020). Structure and dynamics of the oceanic lithosphere-asthenosphere system. Physics of the Earth and Planetary Interiors, 309 (July), 106559. doi:10.1016/j.pepi.2020.106559

Richards, F. D., Hoggard, M. J., Cowton, L. R., & White, N. J. (2018). Reassessing the Thermal Structure of Oceanic Lithosphere With Revised Global Inventories of Basement Depths and Heat Flow Measurements. Journal of Geophysical Research: Solid Earth, 123 (10), 9136–9161. doi: 10.1029/2018JB015998

Contact

For questions, comments or feedback, please reach out to Megan Holdt (mch74@cam.ac.uk), Fred Richards (f.richards19@imperial.ac.uk) or Nicky White (njw10@cam.ac.uk).