extension and shape o different Quaternary stratifications. Photographs 
with and without stereoscopic covering were also used for this purpose. 
II. The Geographical Survey Office produces annually in a Wild A 5 
for the Hydrographie Service 300 km? base-maps 1:10 000 for echo- 
sounding. The map contains shore-lines, contours of 5 meters interval 
and «angle-points » for sitedermination. Passpoints and anglepoints are 
signalled before photographing and aerialtriangulation is made in a Ste- 
reoplanigrah. Average error for shore-line = + 2,5 meters, for angle- 
points + 1,0 meter and for contours + 1,7 meters. 
III. The Geographie Division at the University of Lund has used 
photographs to study forest-limits, for glaciologic, geologic and orogra- 
phic studies etc. 
IV. Chiefly during the years 1948-1951 geodetic, terrestrial and ae- 
rial photogrammetric surveying were made for the mapping of the 
highest mountain massif of Sweden for glaciologic research. E. Woxnerud 
did the fieldwork, the Airforce the photographing and the stereoplotting 
was made by an operator from the Land Survey Board in the Department 
of Photography at the General Staff of Defence. The north and south 
peaks of Kebnekaise were again determined as to their heights and a 
drawn map on a scale of 1:20 000 with contours of 20 meters interval was 
compiled. A report of the work was made by E. Woxnerud in « Geogra- 
fiska annaler ». 
g) Ancient Monuments. 
In connection with the preparation of the Economic Map an in- 
ventary of all ancient monuments of the region was made. 
h) Scientific expeditions. 
The Geographic Division at the University of Uppsala examined 
a so called « sandur » on Island in the summer of 1951. About 25 km? 
were photographed by terrestrial photogrammetric methods. The pho- 
tographs were plotted point by point with stereomicrometer in a mirror- 
stereoscop. A mirrorreflexcamera 6 x 6 cm with known inner orien- 
tation was used. The bases were about 100 meters and placed about 
300-400 higher than the surface of the « sandur ». The photographs were 
taken with the camera-axis perpendicular and oblique to the bases. The 
average error in the plane was preliminary estimated to be about 20 
meters at the distance of 2000 meters. The plotting scale was 1:15 000. 
A river-morfology work is beeing prepared, in which photogramme- 
trie methods will be used. 
i) Mountain maps. 
A mountain map on a scale of 1:100 000 with contours of 20 meters 
— 95 
    
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
  
  
   
  
  
  
  
  
   
  
  
  
  
  
  
  
   
    
a