TABLE 8.1 Core Locations and ''Surfical" (Holocene Average or Youngest Pleistocene) Eolian Flux Values (in mg/cm2/kyr).

Core

Reference

Latitude

Longitude

Flux

Comment

V20-122

1

6.6°N

161.7°E

642

Holocene

V20-126

1

42.2°N

155.9°E

737

Holocene

RC14-105

1

39.7°N

157.5°E

988

Holocene

V-129

1

37.7°N

156.6°E

1299

Holocene

RC10-167

1

33.4°N

150.4°E

431

Holocene

V28-294

1

28.4°N

140.0°E

55

Holocene

V21-146

2

37.7°N

163.0°E

206

Holocene

KK75-02

3

38.6°N

179.3°E

241

Holocene

DSDP 310

4

36.9°N

176.9°E

253

Pleistocene

DSDP 466

5

34.2°N

179.3°E

81

Pleistocene

DSDP 578

6

33.9°N

151.6°E

1790

Probably hemipelagic

DSDP 465

5

33.8°N

178.9°E

9

Unreliable sediment rate

DSDP 576

6

32.4°N

164.3°E

603

Pleistocene

DSDP 305

4

32.0°N

157.8°E

86

Pleistocene

DSDP 463

7

21.4°N

174.7°E

41

Pleistocene

LL44-GPC3

8

30.3°N

157.8°W

183

Pleistocene

RC11-210

9

1.8°N

140.0°W

nd

Near K7905-16GC

DSDP 503B

10

4.1°N

95.6°W

28

Holocene

V28-203

11

1.0°N

179.4°W

13

Holocene

K7905-16GC

11

1.1°N

138.9°W

19

Holocene

RC10-65

11

0.7°N

108.6°W

21

Holocene

DSDP 597

12

8.8°S

129.8°W

1.0

Pleistocene

DSDP 598

12

19.0°S

124.7°W

0.6

Pleistocene

DSDP 599

12

19.5°S

119.9°W

0.4

Pleistocene

DSDP 600C

12

18.9°S

116.8°W

0.8

Pleistocene

DSDP 601

12

18.9°S

116.9°W

1.8

Pleistocene

V30-36

13

5.4°S

27.3°W

nd

V30-40

13

0.2°S

23.1°W

450

Holocene

RC24-09

13

1.9°S

11.4°W

474

Holocene

RC24-16

13

5.0°S

10.2°W

89

Holocene

V22-174

13

10.8°S

12.0°W

38

Holocene

ODP 664

14

0.1°N

23.2°W

450

Pleistocene

ODP 663A

14

1.2°S

11.9°W

380

Pleistocene

RC27-61

15

16.6°S

59.9°E

500

Holocene

ODP 756B

11

27.4°S

87.6°E

0.3

Holocene

Note: References to original data are: 1. Rea and Leinen (1988); 2. Hovan et al. (1989); 3. Janecek (1983); 4. Rea and Janecek (1982); 5. Rea and Harrsch (1981); 6. Janecek (1985); 7. Rea and Janecek (1981); 8. Janecek and Rea (1983); 9. Chuey et al. (1987); 10. Rea et al. (1986); 11. Rea, unpublished data; 12. Bloomstine and Rea (1986); 13. Janecek, unpublished data; 14. Ruddiman et al. (1989); 15. Clemens and Prell (1990).

The flux of dust to the Atlantic has been measured in several cores, most of which are downwind from the Sahara (Table 8.1). Holocene flux values in cores well away from the problems attendant to continental margin sedimentation are 400 to 500 mg/cm2/kyr in the region between the equator and about 10°N. There is a marked drop-off south of the equator to values of about 90 mg/cm2/kyr at 5°S and about 40 mg/cm 2/kyr at 11° S, an order of magnitude reduction in values, a similar amount to the trans-equatorial flux reduction in the Pacific. The westward moving dust plume from the deserts of North Africa is centered at about 20° N (Sarnthein et al., 1981; Leinen et al., 1986), so flux values greater than 500 mg/cm2/kyr might be expected at that latitude.



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