Geoscience Reference
In-Depth Information
Table 9.3
Active-layer depths and permafrost temperatures for selected stations in ice-free
subregions
Active-
layer
depth (m)
Sub-
region
Latitude
(°S)
Longitude
(°)
Permafrost
temp. (°C)
a
Station
Elev. (m)
1
Troll
72.011
2.533E
1,335
0.08
−17.8
Sanae
71.687
2.842°W
805
0.15
−16.8
Novozalarevskaya
70.763
11.795E
80
0.7
−9.7
Aboa
73.033
13.433°W
450
0.6
nd
Farjuven Bluffs
72.012
3.388°W
1,220
0.25
−17.8
Sør Rondane Mtns.
71.500
24.5E
1,250
0.1-0.4
nd
2
Syowa
69.000
39.583°E
15
nd
−8.2 (6.8)
Molodezhnaya
66.275
100.760°E
7
0.9-1.2
−9.8
3
Progress
69.404
76.343
96
>0.5
−12.1
Grove Mtns.
79.920
74E
1,200
0.2
nd
Larsemann Hills
69.400
76.27E
50
1.0-1.1
nd
4
Casey Station
66.280
110.52E
10-100
0.3-0.8
nd
5a
5b
Simpson Crags
74.567
162.758E
830
0.35
nd
Oasis
74.700
164.100E
80
1.6
−13.5
Mt. Keinath
74.558
164.003E
1,100
nd
nd
Boulder clay
74.746
164.021E
205
0.25
−16.9
Granite Harbour
77.000
162.517E
5
0.9
nd
Marble Point
77.407
163.681E
85
0.4
−17.4
Victoria Valley
77.331
161.601E
399
0.24
−22.5
Bull Pass
77.517
161.850E
150
0.5
−17.3
Minna Bluff
78.512
166.766E
35
0.23
−17.4
Scott Base
77.849
166.759E
80
0.30
−17.0
6
Ellsworth Mtns.
78.500
85.6W
800-1,300
0.15-0.50
nd
7
Russkaya
74.763
136.796
76
0.1
−10.4
8
Signy Island
60.700
45.583W
90
0.4-2.2
−2.4
King George Island
62.088
58.405W
37
1.0-2.0
−0.3 to
−1.2
Deception-
Livingston Is.
62.670
60.382W
272
1.0
−1.4 to
−1.8
Cierva Point
64.150
69.95W
182
2.0-6.0
−0.9
Amsler Island,
Palmer
64.770
64.067W
67
14.0
−0.2
Rothera
67.570
68.13W
32
1.2
−3.1
Marambio Station
64.240
56.67W
5-200
0.6
nd
Source: Vieira et al. (
2010
); various reports
a
Depth of measurement in parentheses where available
ranges between 0.5 and 1.0 m. In the Transantarctic Mountains, active layer depths
range between 0.3 and 1.0 m, depending on elevation and proximity to the McMurdo
coast. Active patterned ground is present throughout ice-free areas of Antarctica.
