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Osmium profile data

Woodhouse

Sharma

Sharma

Levasseur

Pacific Ocean 9° 46' N, 104° 11' W

Pacific Ocean 22° 45' N, 158° 0' W

Atlantic Ocean 31° 50' N, 64° 10' W

Indian Ocean 34° 11' S, 55° 37' W

Depth (m)

Os (fmol/L)

Depth (m)

Os (fmol/kg)

Depth (m)

Os (fmol/kg)

Depth (m)

Os (fmol/kg)

25

37.8

1000

18.6

25

15.0

22

58.6

25

39.6

3000

19.4

500

18.9

617

55.7

44

36.1

3000

19.5

1205

56.7

100

42.6

3000

15.3

1205

56.2

100

38.9

3000

16.0

1797

56.6

459

35.5

3000

18.8

2389

55.9

462

34.9

3000

16.6

2995

55.7

1000

41.2

3609

58.7

1496

45.5

4225

56.1

1500

34.0

4560

55.8

1997

48.7

1998

49.4

2401

51.6

2440

50.6

2480

46.0

2778

44.2

Pacific

Woodhouse, O. B., Ravizza, G., Kenison Falkner, K., Statham, P. J., and

B. Peucker-Ehrenbrink., 1999. Earth. Planet. Sci. Lett. 173: 223-233.

Atlantic and Pacific:

Sharma, M., Papanastassiou, D. A., and Wasserburg, G. J., 1997. The

concentration and isotopic composition of osmium in the oceans.

Geochim. Cosmochim. Acta 61: 3287-3299.

Indian:

Levasseur, S., Birck, J.-L., and Allegre, C. J., 1998. Direct measurement of

femtomoles of osmium and the 187Os/186Os ratio in seawater. Science

282: 272-274.