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Table 1:

Canonical set of parameters used in the simulation.

Target radius ($r_{\rm t}$):
$8\times 10^7$ cm
Target mean density ( $\rho_{\rm t}$): 2.25 g cm-3
Water ice density ( $\rho_{\rm ice}$): 1.00 g cm-3
Rock density ( $\rho_{\rm s}$): 3.50 g cm-3
Projectile mean density ( $\rho_{\rm p}$): 2.5 g cm-3
Original mixed material initial depth ( $h_{\rm mix}$): 0 cm
Water ice fraction in original material ( $f_{\rm ice}$): 0.5
Initial fraction of crystalline water ice ($\eta$): 0.0
Target mean collisional velocity ( $\langle V_{\rm col}\rangle$): $2.48\pm0.86$ km s-1
Target mean intrinsic collision probability ( $\langle Pi \rangle$): $1.47\pm0.02\times 10^{-22}$ km-2 yr-1
Time for total amorphization ( $T_{\rm amorph}$): $1 \times 10^9$ yr
Thickness of layer with spectral information ( $h_{\rm spec}$): 200 $\mu $m
Crater depth/diameter ratio ($\mu $): 0.2
Energy fraction to kinetic energy of the fragments ( $\delta_{\rm k}$): 0.2
Energy fraction to thermal process ( $\delta_{\rm T}$): 0.1
Minimum thickness for global effect ( $h_{\rm dep}$): 0.01 $\mu $m
Total simulation time ( $T_{\rm sim}$): $4\times 10^9$ yr
Simulation time step ($\Delta_T$): $1\times 10^4$ yr
Size distribution:  
K0, $4.11\times 10^{26}$
q0, q1 4.20, 3.50-2.00
r1 20-50 km

Source LaTeX | All tables | In the text

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