Data for Mercury's crustal porosity as constrained by the planet's bombardment history

This archive contains grids and spherical harmonic files for Mercury's crustal porosity as constrained by the planet's bombardment history Broquet A. & Rolser F. et al, submitted to Geophysical Research Letters (2024). 

The different grid files are provided in netcdf format and are expanded up to spherical harmonic degree 300 for crustal thickness and 80 for porosity. The spherical harmonic model uses the SHTOOLs convention. Higher resolution models are available on demand. 

Porosity_M1.netcdf: Nominal porosity model using the parameters that best-fit gravity-derived porosity estimates

Porosity_M2.netcdf: Porosity model using the lunar parameters

CrustalThickness_M1.netcdf: Crustal thickness (km) considering the effect of crustal porosity from model M1 and assuming an average grain density of 2950 kg m-3.

CrustalThickness_M2.netcdf: Crustal thickness (km) considering the effect of crustal porosity from model M2 and assuming an average grain density of 2950 kg m-3.

CrustalThickness_M1_Beu20.netcdf: Crustal thickness (km) considering the effect of crustal porosity from model M1 and lateral grain density variations from Beuthe et al. (2020).

CrustalThickness_M2_Beu20.netcdf: Crustal thickness (km) considering the effect of crustal porosity from model M2 and lateral grain density variations from Beuthe et al. (2020).

CrustalThickness_2800.netcdf: Crustal thickness (km) considering the an average crustal bulk density of 2800 kg m-3.

N20.netcdf: N20 count using a 1000-km moving window.

Topo_degstr.sh: Spherical harmonic coefficients for the spectrally truncated Mercury Laser Altimeter model. The truncation uses the degree-strength map of Konopliv et al. (2020).