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Distribution of Permafrost

Distribution of Permafrost. Permafrost as a planetary event Geographical distribution of permafrost Subsea permafrost. Permafrost as a planetary event. Yershov, p.p. 1-9

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Distribution of Permafrost

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  1. Distribution of Permafrost • Permafrost as a planetary event • Geographical distribution of permafrost • Subsea permafrost

  2. Permafrost as a planetary event Yershov, p.p. 1-9 Permafrost is widely developed on other planets of the Solar system and on the satellites of Jupiter, Saturn, Uranus and Neptune Mars has from 1-2 to 4-5 km thick cryosphere Other than H2O ice involved in the frozen layers on these planets and satellites.

  3. IPY TSP Snapshot

  4. IPY TSP Snapshot

  5. Theme 2: Permafrost Long-Term History To read: Yershov, pp 409-434 First glaciation and permafrost occurrence - 2.3 Byr ago North American continent and in Southern Africa Mesozoic time – very warm, probably no permafrost 40-25 Myr ago – cooling and glaciation of the Antarctica 10 Myr ago – glaciation and permafrost formation in Northern Hemisphere The oldest reported permafrost that still exists – 1.8 Myr

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