1. BIODEEP WP 2 Chemical and physical analyses of DHAB´s.
A. watercolumn/brine analyses (UU)
B. susp.mat. major/minor elements; C,N (UU)
key trace elements (Pb,Co,Zn,Cu,Cd) (UP)
C. sed.traps major/minor elements; C,N (UU)
microfossils / biogenic components (UM)
radiotracers (210Pb, 230Th) (SOC)
D. sediments (major/minor elements; C,N) (SOC/UU)
key trace elements (Pb,Co,Cu,Zn,Cd) (UP)
E. pore water extraction/analysis (UU)

2. Suspended matter Samples were obtained from Urania basin in Oct. 2003
Filters have been thoroughly washed with demineralised water

3. Sediment traps Bannock 01/02 Urania 99/00 3500 ST3 2500 ST2 1500 ST1
 Depth (m)
3500
ST4
2800
ST3
1500
ST2
460
ST1
 Depth (m)

4. Sediment traps New traps analysed: Bannock 01/02 Urania 99/00 3500 ST3
2500
ST2
1500
ST1
 Depth (m)
3500
ST4
2800
ST3
1500
ST2
460
ST1
 Depth (m)
New traps analysed:
Bannock 02/03
ST3 (2500 m) and ST4 (3500 m)
Urania 02/03
ST2 (2500 m) and ST3 (3500 m)

5. Methodology:
Total destruction of samples for ICP-OES
and ICP-MS analysis
Subsampling during total destruction for Si
analysis with photospectrometer
C-total, C-organic and N contents with CNS-
analyser

6. Total mass flux
Sept.-May

7. Total mass flux
Sept.-May

9. Average S concentrations for Aug
Average S concentrations for Aug May 2000 (UB) and May 2001 – May 2002 (BB)
S conc.

10. Average S concentrations for Aug
Average S concentrations for Aug May 2000 (UB) and May 2001 – May 2002 (BB)
S conc.
S conc.

11. Average S flux for Aug. 1999 - May 2000 (UB) and May 2001 – May 2002 (BB)

12. Average CaCO3 concentrations and fluxes for summer 2002 - summer 2003
CaCO3 flux

13. Average N and C org fluxes for summer 2002 - summer 2003
N flux
C org flux

14. Average Fe flux for summer 2002 - summer 2003

15. Radiotracers (SOC)

16. Chemical characterization of sediments
Sediment composition
Accumulation rates

17. Elemental composition (SOC)
Sediments
Elemental composition (SOC)

18. Sediments

19. Sediments

20. Sediments

21. Sediments

22. Sediments Core Water depth Accumulation rate Pb-210 excess inventory m
g.cm-2.y-1
d.p.m. cm-2
Bannock
3476
0.0063
141
BD41BC5
3520
0.0066 14
MT6
Discovery
3533
0.0052 22
BD19MC4
BD26BC3
Urania
3475
0.024 23
BD07BC2
3455 ?
>100
BD21MC3

23. Future Perspectives Suspended matter (esp. at interfaces)
Gas content of brines (pressure sampling!)
Sediment traps
Sediment work (Discovery basin)