Table 2 
Mean and maximum current speeds at I mab (n lno ) during TOPEX-1 
Time: 
front; 
to: 
Wind: 
speed; 
direction; 
21.1.90 18:00 
22.1.90 6:14 
5 to 7 bft. 20 to 30 kn 
190 to 230° 
25. 1.90 20 ; 00 
26.1.90 8:14 
10 to 12 bft. 47 to 80kn 
220 to 230° 
27.1.90 18:00 
28.1.90 6:14 
5 to 8 bft. 16 to 36 kn 
140 to 160’ 
cm/s 
cm /s 
cm/s 
Ridge: 
Kl ii 
18.9 
- 
- 
31.8 
- 
KIA it 
_ 
57.2 
24.8 
- 
100.4 
43.0 
Trough: 
K2 ii 
15.2 
47.7 
19.4 
MtnnK 
23,4 
78.0 
37.4 
L3 ii 
1 5.9 
37.7 
21.4 
MjUiW 
24.8 
78.0 
38.8 
Tig.7 a) Stress r(iin)(i) evened bj the flow upon the sediment particles as a functioned the current 
speed measured at 1(H) cm above the bottom b) Threshold stress r, (T>| as a function of grain 
si/e D. Tlie diagram holds for unidirectional How with > 15 cm/s and D < 0,5 mm.