19 
for the deep triangle contrary to the spectra of the 
shelf triangle, where the spectrum rises only slowly 
from inertial to lower frequencies, 
The spectra of the sea level variations cannot easi«- 
ly be compared because of the different lengths of 
record. Both spectra show the peak at the semi= 
diurnal, and at station (22) also the diurnal tide, 
Here the peak at the quarter-diurnal tide seems to 
be persistent, too. Other peaks have still to be eri- 
tically examined, 
6, Summary 
The two triangles which form the current meter array 
in the East Icelandic Shelf region, cover a hetero- 
geneous oceanographical area, The records off the 
shelf suggest that, at the bottom, overflow-like 
water moves parallel to the isobaths from the South 
to the West. The upper layers of the deep triangle 
and the entire shelf triangle are under the influence 
of the frontal zone, between the East Iceland Current 
in the North, particularly at station (21), and the 
warın Atlantic Water. The frontal zone seems to be 
quite stationary in the area of the shelf triangle, 
whereas in the deep triangle it moves slowly through 
the array, The motions of this frontal zone are recor- 
ded mainly by the instruments closest to the shelf 
edge, the moorings farther away from this shelf edge 
showing the least influence,