tion area. An easterly firn-field drained to northeast 
has been listed as an E-glacier, while it has been 
called a NE-glacier when the tongue has moved due 
northl/). 
For the whole country we have obtained the following 
distribution: 
N NE E Sp $S SW W WW 
Number of 
glaciers 23 67 99 22 15 3 à lh 
percentage io 28 ho 9 6 1 2 2 
L 
3 
area inkm® 30 63 163 13 16 10 11 
percentage 10 20 33 L 5. 3 4 
The two dominating factors influencing the orienta- 
tion are thus prevailing storm winds and ete to 
solar radiation. The winds favour E and NE“/, the 
radiation favours NW - NE. Of these two factors the 
wind is by far the most important one - 53% of the 
glacier-covered area is facing east as compared with 
only 4% west, 20% faces northeast and only 1% northwest. 
A corresponding comparison for the radiation factor 
shows 10% N versus 5% S and 1$ NW versus 3% SW. 
However, where the two factors act together, i.e. in 
the sector N-NE-E, we find 80 per cent qr the Swedish 
glaciers and 83 per cent of their areal/. 
The &bove report of & glacier inventory does not in- 
clude much of photogrammetric interest but it represents 
one of these frequent occasions when a specialist in an- 
other branch of science can use "photo interpretation" 
as an invaluable tool for his research. The present 
Study must be considered & preliminary one and in certain 
details our glacier map and glacier statistics will most 
certainly be revised as soon as more time can be put into 
the project. It is also to be expected that much inter- 
esting information will come out of & planned photo 
study of the regional variations of glacier retreat in 
Sweden. 
  
1) Only the 8 principal directions N, NE, E, SE, etc. 
have been used - both for primary data and for the 
evaluation of the results. 
  
2) In some of the eastern parts of the Swedish high 
mountains a considerable amount of solid precipitation 
falls with easterly winds. This is, however, of little 
significance since the fallen snow is soon brought over 
on the eastern slopes by the predominant westerly 
winds of high velocity. 
38 
  
1) It must be observed here that the whole area of 
every glacier listed as an E-glacier has been 
included in the figure under E in the table above 
even though considerable parts of the glacier may 
face other directions.