Geology Reference
In-Depth Information
Figure
3.2.
Freezing and thawing conditions in various periglacial environments of the world:
(a) Yakutsk (lat. 62°01
′
N, long. 129°43
′
E, altitude 108 m), Siberia, Russia; (b) Tuktoyaktuk (lat.
69°27
′
N, long. 133°02
′
W, altitude
>
10 m), Mackenzie Delta, Canada; (c) Green Harbor (lat. 78°02
′
,
long. 14°14
E, altitude
4800 m), Qinghai-Xizang (Tibet) plateau, China; (e) Mont Blanc Station, El Misti (lat. 16°16
′
E, altitude 7 m), Spitsbergen; (d) Fenghuo Shan (lat. 34°20
′
N, long. 92°52
′
′
S, long.
71°25
′
W, altitude 4760 m), South Peru; (f) Summit Station, El Misti (lat.16°16
′
S, long. 71°25
′
W,
altitude 5850 m), South Peru; (g) Sonnblick (lat 47°03
′
N, long. 12°57
′
E, altitude 3060 m), Austria;
(h) Kerguelen Island (lat 49°30
E, altitude at sea level), Southern (Indian) Ocean.
Sources: (a), (c), (e), (g), and (h) from Troll (1944); (b) from AES records, Canada; (d) constructed
from monthly means of air temperature recorded at Fenghuo Shan by Northwest Railway Institute
personnel.
′
S, long. 69°30
′
