Документ взят из кэша поисковой машины. Адрес оригинального документа : http://geo.web.ru/pubd/2014/02/25/0001187404/pdf/vasiliev_et_al_2013.pdf Дата изменения: Tue Feb 25 10:22:20 2014 Дата индексирования: Thu Mar 20 11:48:29 2014 Кодировка:

MAPPING OF SUBMARINE PERMAFROST OF YAMAL SHELF
A. VASILIEV, P. REKANT, I. STRELETSKAYA

2013 .

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reliminary Data

Offshore Permafrost of Barents and Kara Seas
(by V. Solovyev)
Legend

2013 .

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reliminary Data

Geocryological Map of USSR, 1991

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Preliminary Data

Boreholes in Western Arctic shelf
2013 .
«»

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Preliminary Data

Permafrost Data based on BH
BH Location Sea depth, m
61 71 20 22,7 25 15,5 21 28 11 80 114 109 16

Depth from sea bottom, m Borehole
49 100 50 (?) 42,9 50 (?) 109,5 90 87,5 35 60 50 20 31

PTP
6 20 30,6 23,6 41 63 23,5 41 12 9,5 13,5 8,4 28,8

Base of Permafrost
No found. No found 31,6 40,5 42,1 109,5 48,8 71,5 No found 20 (?) 46 (?) 18,5 No found

Permafrost thickness, m
49 29 1,0 16,9 1,1 46,5 25,3 30,5 23 10,5 (?) 32,5 10,1 2,2

1 1


Barents Sea « « « « « « « Kara Sea « « « Baydarata Bay

114 146 201 383 384 385 5 206 253 254 867

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HRS profiles in Kara Sea
Before 2012 2012

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An Example of HRS profile in Kara Sea

Permafrost Table Position Gas Transfer Hole Gas Transfer Hole

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Test (comparing) of seismic and drilling data

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Data Base of PTP in Kara Sea

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Sea Bottom Temperature

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SEGMENTATION OF THE KARA SEA AREA FOR THE BOTTOM TEMPERATURE ESTIMATION

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Kara Sea Bottom Temperature changes in Century

A)
10



T(1900 -2000) ~ 0,8 oC

B)


-0,2

T(1900 -2000) ~ 0,3 oC

6 4 2 0 -2 1900

,

8

-0,6



-1

-1,4

-1,8

1920

1940

1960

1980

2000

-2,2

1925

1945

1965

1985

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BOTTOM TEMPERATURE CHANGES (1900 -2000)

Kara Sea, SE Part
3 5 4

Kara Sea, Baydarata bay

Temperature,

2

Temperature, oC

3 2 1 0 -1 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000

1

0

-1

-2 1960
1900 1910 1920 1930 1940 1950 1970 1980 1990 2000

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BOTTOM TEMPERATURE CHANGES (1900 -2000), FIRST RESULTS 1,0
0,6

0,3 0,4

2,3

1,5 2,7

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Yamal

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Conclusions:
·PTP of the offshore Permafrost is found; ·Map of the offshore Permafrost is developed; ·Statistical analyses allow to develop the PTP model;

·During last 100 years we found an increasing of the sea
Permafrost degradation.

bottom temperature. May be it is a real reason for the offshore

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Thank you !!!

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