Non-escaping percentage in mass of dust ejected from the northern dust cover (blue curve) and the thickness of redistributed or fall-back dust deposits (red curve) as a function of average dust-to-ice ratio of the dust cover. The surface area of the dust cover is around 8 km2 including Ash, Babi, Seth, and Ma’at regions, excluding Hapi and Imhotep. The site of redeposition of fall-back dust is the southern hemi-nucleus and Hapi.
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