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Подводная Мерзлота Subsea Permafrost

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Subsea Permafrost

Подводная Мерзлота

P. P. Overduin,

H.-W. Hubberten & M. N. Grigoriev

(2)

Subsea permafrost

Grosse et al. (2011)

(3)
(4)

IPA

East Siberian Shelf

(5)

East Siberian Shelf IPA Permafrost Extent

Brown et al. (1997)

IPA extent

(6)

East Siberian Shelf Modelled Extent

Hubberten & Romanovskii (2003)

ice-bonded ice-bearing

(7)

Romanovskii, Hubberten, Gavrilov, Eliseeva, Tipenko (2005)

< 100 m 100-200 m 200-300 m 300-400 m 400-600 m

Modelled Thickness

Laptev Sea East

Siberian Sea

(8)

East Siberian Shelf Modelled Extent

Zhigariev (1997)

relict ice-bonded permafrost ice-free cryotic sediment

(9)

Drilling in coastal waters

(10)

Degradation follows flooding

(11)

Drilling method

(12)

Sediment

ca. 20 cm

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