158
Land-Ocean Systems in the Siberian Arctic: Dynamics and History
mg m- 2 , whereas the ice thickness in the areas studied ranged from 30 - 300 cm (discussed by
Booth, 1984; Smith, 1988 and Cota et aI., 1991).
4a
top
~ ChIo
140-175
~
•
p".eopigmenlS
E
105- 14
~
E
I"
0
~
"
6~
.~
..
. ~
u
/
0
0 .5 1 1.5 2 2 .5 3 3 .5 •
II
algal pigmen ts (m9 m- 2 )
0-30
bottom
KD9529 101
4b
top
50-250
120-140
E
~
~~
.5. 70 ·120
~
0
" ~ 40 -70
;;
.~
i
0 0.5 1 15 2 2.5
20-50
/
0
0 .2
O.
0 .6
0-40
algal pigments ( mg m- 2 )
algal pigments (mg m- 2 )
0-20
bottom
bottom
KD9S 29404
KD95 294 06
Figure 4: Chi a and phaeopigment content (mg m- 2 ) in three ice cores; Chi a concentrations were measured for
each core section separately and the amount of Chi a for each layer of the ice sheet were calculated. Shaded areas
indicate sections of sediment-Ioaden "dirty ice". Note different scales for pigment concentration. a) Ice station
*29101; b) Ice stations *29404, *29406 (KD95: IIB "Kapitan Dranitsyn", 1995).