FEHM source code modifications and executables for use with ocean-world gravity

This is a repository for compiled codes, source code, and input files used in this paper:
Fisher, A. T., K. D. Dickerson, D. K. Blackman, N. Randolph-Flagg, C. R. German, and C. Sotin (2024), Sustained hydrothermal circulation under ocean-world gravity, J. Geophys. Res. - Planets, submitted and in review.
Plain language summary from paper: Ocean worlds are planetary bodies that have a liquid ocean, often under an icy shell or within the rocky interior. In Earth's solar system, several moons of Jupiter and Saturn are ocean worlds. Some ocean worlds are thought to have hydrothermal circulation, where water, rocks, and heat combine to drive fluids in and out of the seafloor. Hydrothermal circulation would impact the chemistry of the water and rock of ocean worlds and could help life to develop deep below the icy surface. This study shows results from computer simulations of hydrothermal circulation, based on a well-understood system on Earth, to measure the influence of lower gravity like ..., There is a README file with information on files posted, and a Supporting Information document that goes with the paper that discusses modifications to code in some detail. The main research paper also discussed how the code was used. , , # FEHM source code modifications and executables for use with ocean-world gravity

[https://doi.org/10.7291/D1VQ3R](https://doi.org/10.7291/D1VQ3R)

FEHM archive for Fisher et al. (2024), \"Sustaining hydrothermal circulation with gravity relevant to ocean worlds,\" revised following review for Journal of Geophysical Research - Planets.

NB: Above will be revised when paper is in print, and a DOI will be added.

## Description of the data and file structure

Three compressed (zip) files are included in this archive:

10_FEHM-Linux_Diffg_Exe.zip
20_FEHM-SourceEdited.zip
30_FEHM-InputDirs.zip

## Code/Software

#### 10\_FEHM-Linux\_Diffg\_Exe.zip

Contains executable FEHM programs with gravity for Earth, Europa, and Enceladus:
xfehm_v3.4g9_81 gravity for Earth, 9.81 m/s^2
xfehm_v3.4g1_3 gravity for Europa, 1.3 m/s^2
xfehm_v3.4g_114 gravity for Enceladus, 0.114 m/s^2

These codes were compiled with Rocky Linux using the gfortran compiler (part of gcc family of compilers).

Posted executable...