120
N
1
-;10 ,
\
)
~ Prevailing wave direction
~ Flood current
~ Ebb current
-
Ebb sediment transport
- . Flood sediment transport
M. Cintia Piccolo . Gerardo M.E. Perillo
,...,'
I
(
ARGENTINE
SEA
o
2 km
L
'
_ _ ~_--"
Fig. 6.10. Morphology and sediment transport in the Rio Negro mouth (modified from del Rio et al. 1991)
a
Temperature (O C)
b
Sal i nity (p su)
18.20
18.25
18.30
1835
1&40
0
5
10
15
20
25
0
0 -
-2
-4
-4
:[
:[
'"
' "
-6
-6
-+- Station 1
-+- Station 1
-8
-fr- Station 2
-8
-,:,- Station 2
- - - - Station 3
- - - - Station 3
-e- Station 4
~ Station 4
-10
--B- Station 5
-10
-a- Station 5
Fig. 6.11. a Temperature and b salinity profiles in the Rio Negro Estuary in March 199B
high tides. Winds from the E and N produce the contrary effect. Although the prevailing winds are from the NW (INCYTH 1975).
Examples of the temperature and salinity profiles in the estuary for autumn are
given in Fig. 6.11. Estuarine waters are thermally homogeneous and decrease towards