Latitude Variations of the Polar Caps on
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J. Hillier; P. Helfenstein; J. Veverka
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Article
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1996
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Elsevier Science
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English
β 380 KB
In contrast, Johnson (1985) suggests that the polar layers are created by ion bombardment. He proposes that ion We have modeled Ganymede's polar regions as a frost layer overlying typical non-polar materials using a two-layer photo-bombardment effects are dominant at Europa, marginally metric model