Crustal thickness and effective elastic thickness models of Venus

Global crustal thickness and effective elastic thickness models of Venus from gravity and topography.

Reference:

Jiménez-Díaz, A., Ruiz, J., Kirby, J.F., Romeo, I., Tejero, R., Capote, R., 2015. Lithospheric structure of Venus from gravity and topography. Icarus 260, 215–231. https://doi.org/10.1016/j.icarus.2015.07.020

Contact:

Alberto Jiménez-Díaz ([e-mail])

Caveats and limitations

Both gravity and topography models were truncated at degree 180.

Crustal thickness model

The model assumes a mean crustal thickness of 25 km, and crust and mantle densities of 2900 and 3300 kg m⁻³, respectively. To mitigate errors in the downward continuation of Bouguer anomalies, we applied a minimum amplitude filter for the crust-mantle relief at degree 70. For details see Jiménez-Díaz et al. (2015).

- Spherical harmonic coefficients of the shape of the crust-mantle interface:

Venus_Moho.sh

- Crustal thickness model with a spatial resolution of 0.5 degrees, in grid (*.grd) and data table (*.xyz) formats:

Venus_Crustal_Thickness.grdFormat:Gridline node registration used [Geographic grid]x_min: 0 x_max: 360 x_inc: 0.5 (30 min) name: longitude n_columns: 721y_min: -90 y_max: 90 y_inc: 0.5 (30 min) name: latitude n_rows: 361z_min: 12.2915114449 z_max: 100.372141356 name: data

Venus_Crustal_Thickness.xyzFormat:# longitude latitude thickness (km)N = 260281 <0/360> <-90/90> <12.292/100.372>

Effective elastic thickness model (v2015)

Effective elastic thickness (Te) and internal load fraction (F) models with a spatial resolution of 1 degree, in grid (*.grd) and data table (*.xyz) formats. The effective elastic thickness model ranges from 14 (the minimum resolvable Te value in our analysis) to 94 km. For details see Jiménez-Díaz et al. (2015).

- Effective Elastic Thickness, Te (km):

Venus_Elastic_Thickness_2015.grdFormat:Gridline node registration used [Geographic grid]x_min: 0 x_max: 360 x_inc: 1 name: longitude n_columns: 361y_min: -90 y_max: 90 y_inc: 1 name: latitude n_rows: 181z_min: 14 z_max: 93.9320602417 name: z

Venus_Elastic_Thickness_2015.xyzFormat:# longitude latitude thickness (km)N = 65341 <0/360> <-90/90> <14.000/93.932>

- Internal Load Fraction, F:

Venus_Internal_Load_Fraction_2015.grdFormat:Gridline node registration used [Geographic grid]x_min: 0 x_max: 360 x_inc: 1 name: longitude n_columns: 361y_min: -90 y_max: 90 y_inc: 1 name: latitude n_rows: 181z_min: 0.121833771467 z_max: 0.804488778114 name: z

Venus_Internal_Load_Fraction_2015.xyzFormat:# longitude latitude FN = 65341 <0/360> <-90/90> <0.122/0.804>