Model Simulation ofTemporal Variability of Suspended Matter in the North Sea
49
09-08-1988
14-02-1989
6
u, (e m/s)
NERC survey period. Site A
6
4
4
2
o
AUG SEP OCT NOV DEC JAN FE8 MAR APR MAY JUN JUL AUG SEP OCT
1988
1989
Fig.10 Computed time series of the bed shear velocity u. at site A (see Fig. 2) during the
complete NERC NSP period August 1988 - October 1989. The shaded time sections indicate
the IS NSP survey periods. The dashed horizontal line indicates the threshold bed shear velocity for erosion (= 2.8 cm S- I)
96
7515
8
8
10
depth averaged
7 ~ 2
6 5
D 0- 0.6
D 0 .6-1
mg/I
SPM concentration
1 - 2
_
2-6
meesured data
>6
01". not. "'oken "nto
Fig.11 Horizontal distribution of depth- and time-averaged SPM concentrations in the
southern North Sea, measured between August 1988 and October 1989 within the framework of the British NERC North Sea Project. The positions of the numbers indicate the locations of the NSP stations within the grid of the SPM transport model. The number itself
gives the quantity of measured SPM concentrations which enter into temporal averaging at
each single station. The shading between the stations is obtained from inter- or extrapolation. The numbers are plotted as white characters if the shading is too dark for black characters.
49
09-08-1988
14-02-1989
6
u, (e m/s)
NERC survey period. Site A
6
4
4
2
o
AUG SEP OCT NOV DEC JAN FE8 MAR APR MAY JUN JUL AUG SEP OCT
1988
1989
Fig.10 Computed time series of the bed shear velocity u. at site A (see Fig. 2) during the
complete NERC NSP period August 1988 - October 1989. The shaded time sections indicate
the IS NSP survey periods. The dashed horizontal line indicates the threshold bed shear velocity for erosion (= 2.8 cm S- I)
96
7515
8
8
10
depth averaged
7 ~ 2
6 5
D 0- 0.6
D 0 .6-1
mg/I
SPM concentration
1 - 2
_
2-6
meesured data
>6
01". not. "'oken "nto
Fig.11 Horizontal distribution of depth- and time-averaged SPM concentrations in the
southern North Sea, measured between August 1988 and October 1989 within the framework of the British NERC North Sea Project. The positions of the numbers indicate the locations of the NSP stations within the grid of the SPM transport model. The number itself
gives the quantity of measured SPM concentrations which enter into temporal averaging at
each single station. The shading between the stations is obtained from inter- or extrapolation. The numbers are plotted as white characters if the shading is too dark for black characters.