What is the maximum depth of permafrost?

1,5 m
15 m
150 m
1500 m
In areas of harsh winters the depth of the per­mafrost can be as much as 1,493 m (4,898 ft) in the northern Lena and Yana River basins. The over­ly­ing active layer that sea­son­al­ly thaws is just 0.6–4 m (2.0–13 ft) thick.

Answers distribution

1,5 m
15 m
150 m
1500 m
answers
flagFinland
0%
0%
3%
96%
30
flagthe United Arab Emirates
0%
4%
0%
95%
23
flagVietnam
0%
0%
6%
93%
15
flagItaly
0%
5%
10%
84%
38
flagGreece
7%
7%
7%
76%
13
flagthe Netherlands
1%
11%
15%
71%
53
flagGermany
5%
8%
19%
66%
153
flagNorway
4%
8%
16%
66%
24
flagRepublic of Ireland
8%
13%
21%
56%
46
flagRussia
5%
22%
16%
55%
18
flagthe United Kingdom
9%
17%
19%
53%
297
flagFrance
6%
21%
18%
53%
32
flagPoland
8%
15%
23%
52%
11543
flagIndia
7%
11%
31%
47%
51
flagDenmark
4%
23%
23%
47%
21
flagthe United States
8%
17%
29%
43%
300
flagCzech Republic
6%
26%
26%
40%
15
flagAustralia
20%
24%
12%
36%
25
flagCanada
25%
11%
34%
28%
35
flagUnknown
10%
30%
32%
27%
351

Gender

men49%
women52%
1,5 m
9%
6%
15 m
18%
15%
150 m
22%
25%
1500 m
49%
52%

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What is the maximum depth of permafrost?
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Author: Kasia
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