Water production and erosion for all models.
|Model A||Model B||Model C|
|Total H2O production for one orbit [kg]||6.5 × 1010||4.9 × 1010||1.5 × 1010|
|Production per unit surface [kg m-2]||1.3 × 103||1.0 × 103||3.1 × 102|
|Maximum erosion [m]||4.8||4.0||1.1|
|Production during southern summera [kg]||4.7 × 1010 (73%)b||3.9 × 1010 (79%)||1.1 × 1010 (73%)|
Notes. Production and erosion are averaged over the surface. Erosion is calculated as P/ (ρA) where P is the total H2O production, ρ = 470 [kg m-3] is the density of the nucleus, and A = 4.82 × 107 [m2] is the total surface area. Here we assume that the nucleus is 100% H2O ice. Erosion rates for a dust-to-ice ratio of 4 (Rotundi et al. 2015) would be 5 times larger.
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