6 
deployed along 61° 51’ N between 1° 30’ E and 4° 10’ E. For all NORA and MOYENS instruments, the 
sampling interval was 10 minutes, except for the deepest MOYENS instruments which were acoustic Neil- 
Brown current meters with a sampling interval of 1 minute. 
The N1 to N5 NORA moorings and the M8 and M9 MOYENS moorings were additionally equipped 
with Aanderaa water level recorders. Deployment positions, sampling depths, and soundings are given in 
Table 1. All instruments returned full records. 
Table 1 
Deployment statistics 
Position water sampling depths 
Id 
laditude 
longitude 
depth 
current meters 
WLR 
m 
m 
m 
m 
m 
m 
m 
’’NORA“ July/August 1990 
N1 
59° 
0.16’ N 
1° 
59.85’ W 
80 
24, 
46, 
66, 
78 
- 
77 
N2 
59° 
0.10’ N 
1° 
0.30’ W 
129 
22, 
63, 
100, 
127 
- 
126 
N3 
59° 
0.19’ N 
0° 
0.57’ W 
138 
25, 
66, 
109, 
- 
- 
135 
N4 
59° 
0.02’ N 
1° 
0.31’ E 
125 
22, 
63, 
96, 
123 
- 
122 
N5 
59° 
0.23’ N 
2° 
0.43’ E 
116 
13, 
21, 
62, 
114 
- 
113 
N6 
58° 
59.95’ N 
3° 
29.94’ E 
210 
21, 
73, 
124, 
156, 
208 
- 
N7 
59° 
0.10’ N 
4° 
10.11’ E 
295 
16, 
67, 
256, 
293 
- 
- 
N8 
58° 
59.90’ N 
4° 
44.88’ E 
280 
16, 
68, 
149, 
251, 
278 
- 
’’MOYENS* 
* September/October 1986 
M6 
60° 
28.90’ N 
3° 
31.60’ E 
312 
117, 
189, 
247, 
304 
- 
- 
M7 
61° 
50.37’ N 
2° 
2.87’ E 
375 
70, 
120, 
225, 
288, 
365 
- 
M8 
61° 
50.57’ N 
1° 
29.79’ E 
355 
90, 
163, 
226, 
286, 
348, 
236 
M9 
61° 
50.95’ N 
3° 
0.19’ E 
413 
60, 
130, 
240, 
300, 
403, 
280 
MIO 
61° 
51.71’ N 
4° 
9.55’ E 
210 
55, 
75, 
126, 
176, 
205 
- 
Id = mooring identifier, WLR = water level recorder 
2 Residual currents and volume transports 
This section describes volume transports and residual currents at the NORA and MOYENS sections. 
To eliminate inertial and tidal motions, periods shorter than 24.48 hours are removed using a Gaussian low- 
pass filter. Volume transports were calculated from the low-passed meridional velocity components, aver 
aged over the length of the respective time series (see Tables 2 and 3). The box contours (Fig.3) are placed 
right between the current meters (horizontal lines) and mooring positions (vertical lines), respectively. 
2.1 The NORA section (July/August 1990) 
The water exchange across the NORA section is dominated by the northward outflow of the Norwe 
gian Coastal Current (NCC) and the southward inflow of Atlantic Water (AW) at the western edge of the 
Norwegian Trench. In the upper layer, the NCC is the continuation of the Baltic Current, a narrow wedge of 
low salinity water close to the coast, and a wider section of mixed North Sea water. The day to day variabi 
lity of the NCC and AW transports is greater than their mean values (Otto et al.[ 1990]). The boundary be 
tween the NCC and the inflow of AW is characterized by great mesoscale variability which manifests itself 
in mesoscale meanders and eddies (Ikeda et al.[l989], Johannessen et al.[1989]). Between 58.5°N 
and 59° N the continuous AW inflow is blocked by a submarine ridge (cf. Fumes et al. [1986]). Through 
a combination of topographic steering and Ekman transport, most of the AW inflow makes a cyclonic turn 
and flows back northwards with the NCC (Tu rre 11 [1992a]).