Icebergs in the North Atlantic ...
69
G tac:U;1II Summer POlenlial Denslly (cr,-Unlt.) AlonG Prime Mv rldliln
Fig. 5 Meridional section of
lpu~
\
u~
potential density along
, ...
200
q JJ:lj I
.. ,a
Prime Meridian for the glaE 400
l> 28.54
110
cial reconstruction. At
.;
1 600
u' ..
2a: ...
about 69 N, there is a chim.. ..
800
....
ney of dense water with
1000
at ::::: 28.54 g cm- 3 extending
from the surface down to
2000
1200 m. In resemblance to
3000
modern conditions, this
4000
gives clear evidence of deep
convection. Contour inter5000
val: 0.02 g/cm3
6S
70
75
80
85
90
L.alltude
'"
'110<
<§ltv
'\
'!.r;;,~
Fig. 6 After 25 years of inte:i?
gration with icebergs, both
sea-surface temperature
1'109
./
(left) and salinity (right) are
-
10E
greatly reduced all over the
Greenland, Norwegian and
Labrador Seas, and a cold
and fresh tongue extends
towards Europe along 50 N.
Contour intervals: 1°C,
MOl
1 psu below 33, 0.2 psu be~ .. .o~
tween 33 and 35, and 0.1 psu
80N
a-c
""
above 35 psu. Dots indicate
- 0
'\.~
~'"
location of iceberg genera;H
tion
cl!tj
" , -
~o
70N
't~
" ..
"''''
"toO'
.. >
"''''
"''''
",
1'109
, ( .. ""0 . . . .
10E
~" ""/~
. .
MOl
0) -i::,
...,,,
80N
~O
~"
E", .. ~
'\,&
tZ <>..,
E.!l
.. -
... 0
"' ..
u~
....
't"'
701'1
,,>
"''''
"tOO'
ION
~~
\,
'Or;;,~
"
~
.,<>~
-110$
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