Strobl et al.: Determination of DeDositional Bervllium-lO Fluxes in the Area of the uwtev Sea
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PS 1S33-3
2.0
2
3
5
6
1.5
~
~ 1.0
~ 0.5
0.0
0
100
200
JOO
400
500
Coo: Depth [em 1
PS2471-4
Coo: Depth (an]
Figure 10: lOBe concentrations of the sediment cores PS 1533-3 and PS 2471-4 versus core depth [em].
Table 9: Sedimentation rates and the depositional lOBe fluxes during the isotope stages 2, 3 and 5 of the
sediment eore PS 2471-4.
Oxygen Isotope
Sedimentation rate
Depositional lOBe Flux
Stage
[emka- I ]
[l0 6 atoms cl11- 2 a- 11
2
5.80 ± 0.80
4.IO±OSO
3
1.86 ± 0.30
1.96 ± 0.30
5
0.54 ± 0.20
0.90 ± (JIO
rate during this oxygen isotope stage is highly uncertain. As the fluxes of nOTh ex are close to
the expected production flux, we can exclude that thc lOBe fluxes were distorted by processes
of sediment redistribution or enhanced scavenging. The depositional lOBe-fluxes of the cores
PM 9482-1, PM 9463-8, PM 9462-1 and PS 2471-4 (oxygen isotope stage 3) are presented im
Figure 11. The conclusion from the rather low lOBe flux on the continental slope is that only a
smaller part of the terri genic lOBe finds its way to the Arctic Ocean.