1965
I I I I
I ••
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;..,... . •
.... ..
+2
- - -
0
500m
.. -2
- - -
:!
:s
•
~ +6
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c
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~ .. 4
•••
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co
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~ 0
E
•
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- -
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c
1000m
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m
.;;
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~ + 2
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1)
•
c
0
•
' "
iii
~
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-2
-_.
-4
-6
1600-1800m
I
I
1965
251
1970
1975
I I
I I
••
--.
--r-···
- - - -
•
. .
1-·f , . :
I I
I I
1970
1975
1980
1985
1990
I I I J I I I I I I I I
I
J 1
• • • •
.4L...:. __ ._. _
• • •
•
•• • I.. ... • ••
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- . -T:'-•• - •• 1 ' .-.•
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I I
I I
1980
1985
•
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1990
Figure 31: Salinity variations in the central Rockall Channel at three depths, 1963-92.
(Standard deviations from mean salinity values for 1975-78.) From Ellett, 1993.
A subsequent zonal section through the eastern basin by F /S METEOR
in November- December 1994 shows colder, deeper, denser LSW characteristics in the Southern Rockall Trough at that time [Sy, Koltermann and
Paul, 1994], and these conditions were again encountered in even more extreme form in this area during F /S VALDIVIA Cruise 154 in May-June
1995 [Manfred Bersch, 1995, pers comm]. It is therefore suggested by Sy
et al lop cit] that the products of the second [late-80's] period of convective intensification in the Labrador Sea are now beginning to arrive at the