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Table 8: Average values for each of the eight defining environmental variables in each class of the 20-class level of the EEZ classification

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Class

Area (km2)

Depth

Slope

Orbital velocity

Radiation mean

SST amplitude

SST gradient

SST winter

Tidal current

2-class level

4-class level

9-class level

1

88,503

-3001

1.4

0

17.5

2.3

0.01

19.5

0.06

Oceanic

Subtropical

Deep

22

53,368

-1879

1.5

0

15.4

2.4

0.01

16.3

0.11

9

64,306

-5345

1.4

0

14.8

2.6

0.01

16.1

0.03

Abyssal

47

60,053

-2998

1.0

0

12.1

2.4

0.01

11.6

0.07

Shelf and subtropical front

Central

55

2,213

-334

1.6

0

15.5

2.4

0.02

15.1

0.20

63

26,626

-754

0.9

0

12.8

2.4

0.02

12.1

0.18

178

39,360

-750

0.4

0

9.5

1.3

0.01

7.6

0.15

Southern

127

60,884

-4830

0.5

0

10.7

1.7

0.01

10.0

0.05

Sub-Antarctic

 

204

18,277

-2044

3.0

0

9.2

0.9

0.01

8.0

0.08

273

805

-2550

9.1

0

8.4

1.4

0.03

4.4

0.05

219

93,982

-4779

0.6

0

8.9

1.0

0.01

6.7

0.04

12

149

-94

0.9

113

17.8

2.3

0.01

19.3

0.30

Coastal

 

Northern

58

394

-117

0.7

57

14.7

2.2

0.03

13.0

1.09

Central

60

4,084

-112

0.3

21

14.4

2.5

0.02

13.2

0.26

64

2,689

-38

0.3

272

14.2

2.9

0.02

12.6

0.19

124

68

-8

0.4

836

13.4

2.3

0.02

12.7

0.00

130

14

-10

0.4

353

14.1

2.4

0.09

11.9

0.21

169

932

-66

0.2

113

12.4

2.7

0.04

9.9

0.21

190

339

-321

1.9

3

12.3

2.3

0.06

9.4

0.10

170

5,208

-129

0.3

99

10.2

1.3

0.02

9.3

0.55

Southern

Note: See Figure 16 for location of the classes. The divisions within the table show how environmental variation has been differentiated at the 2, 4 and 9-class levels. The total area of each class at the 20-class level is shown in the second column and can be summed to derive the area in classes at the 2, 4 and 9-classes levels.

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