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Table 4.
Parameters used to model the radial distribution of dust deposition on the surface of Europa.
| Parameter | Comment |
|---|---|
| γ(t) = 1014s−1 | The dust ejection is considered stationary |
| Equation (50) with q = 3, R1 = 0.2 μm | We paired these size and ejection |
| and R2 = 20 μm as | direction distributions |
| the shallow size distribution | to model four sources: a narrow jet |
| and with the same boundaries, but q = 5 | with a shallow size distribution, |
| as the steep size distribution | a narrow jet with a steep size distribution, |
| a diffuse source with a shallow size | |
| Equation (51) with ω = 5° and ψmax = 0° | distribution, and a diffuse source |
| for the narrow jet and with ω = 45° | with a steep size distribution |
| and ψmax = 45° for the diffuse source | |
| Equation (48) with Rc = 0.5 μm | This expression describes |
| and ugas = 700 m s−1 is used | the acceleration of the dust by the gas |
| as the ejection speed distribution | flux inside the vents as it is thought be at Europa |
| We wish to compute the total mass | |
| Rmin = 0.2 μm | produced by each source, |
| Rmax = 20 μm | therefore the interval (Rmin, Rmax) |
| coincides with (R1, R2) | |
| p = 3 | We are interested in the mass |
| ρ = 920 kg m−3 | Water-ice density |
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