20) 
and rolling, as well as by vertical water movements,. 
At some stations such movements lead to "loopings" 
of the profiler:; the instrument is hoisted several 
metres with the surrounding water while it con- 
tinues on its way down relative to the water, as 
for instance at Station 015 or 102, Reasons beyond 
our control led to the instrument being hoisted a 
maximum of nearly 50 m during the sinking process 
at Station 214, In Fig, 79, of course, the curves 
at the beginning of the "loopings" are cut off 
(lower ends) otherwise the graphic representation 
would be too difficult to survey. 
As can also be observed from the CTP sections, the 
hydrographic conditions are different at each re- 
petition of the stations, The vertical temperature 
and salinity distributions are similar only a few 
times, and then only in the deeper water of the 
northern part of the area under investigation,. 
The variabilities of temperature and salinity are 
very large on the Icelandic Shelf as is shown by 
the curves of the stations.