Month

Type of

eddy/gyre

Centre

(Approximate)

From simulations of approximate

Evidence

Dominant eddy formation mechanisms

Sizes (km)

Vertical extent (m)

Surface

Feb (Figure 9)

CG

92˚E, 18˚N

200

500

CS84

T

ACG

86˚E, 16˚N

200

400

BA03, SO03

T

CE-feb1

87˚E, 21˚N

50

50

Δ

I

CE-feb2

91˚E, 21.5˚N

100

50

Δ

U

CE-feb3

97˚E, 16˚N

50

100

Δ

U

ACE-feb1

87.5˚E, 19.5˚N

100

70

Δ

I

Jun (Figure 10)

CG

89˚E, 19˚N

400 × 200

600

RM90

T, W

CG

95˚E, 14˚N

200 × 250

500

Δ

U

CE-jun1

81.5˚E, 15˚N

60

1200

RM90

T, I

CE-jun2

82.5˚E, 7.5˚N

80

800

GO00,VY98

W

CE-jun3

97˚E, 16˚N

50

100

Δ

U

ACE-jun1

81˚E, 11˚N

50

500

SO03

U

ACE-jun2

84˚E, 17˚N

60

400

GO00, SO03

I

Oct (Figure 11)

CE-oct1

97˚E, 16˚N

50

100

Δ

U

CE-oct2

95˚E, 10˚N

50

70

GO00, SO03

U

CE-oct3

83˚E, 11˚N

80

120

GO00, SO03, SU93

I

CE-oct4

83˚E, 13˚N

80

150

SU93, GO03

I

CE-oct5

91˚E, 12.5˚N

30

50

GO00

T, W

ACE-oct1

91˚E, 21˚N

100

400

PO91

U

ACE-oct2

93˚E, 18˚N

200 × 100

400

PO91

T

Subsurface

Feb (Figure 12(b))

CG

92˚E, 18˚N

100

-

Δ

-

ACG

85˚E, 18˚N

400 × 60

-

Δ

-

CE

95˚E, 12˚N

100

-

Δ

-

AE

97˚E, 8˚N

30

-

Δ

-

Jun (Figure 12(d))

CG

88˚E, 18˚N

100

-

Δ

-

CE

93˚E, 10˚N

50

-

Δ

-

CE

87˚E, 12˚N

80

-

Δ

-

CE

81.5˚E, 14.5˚N

40

-

BA03

-

CE

82.5˚E, 8˚N

50

-

VY98

-

Oct (Figure 12(f))

CE

86.5˚E, 19˚N

50

-

RM90

-

CE

82.5˚E, 14˚N

70

-

RM90

-

CE

79.5˚E, 5˚N

40

-

Δ

-

CE

83˚E, 10˚N

70

-

RM90

-

AE

97˚E, 7˚N

50

-

Δ

-

AE

95˚E, 12˚N

70

-

RM90

-

AE

91˚E, 17˚N

60

-

Δ

-

CS84

[27]

RM90

[29]

PO91

[13]

BA91

[57]

SU93

[32]

VY98

[36]

GO00

[37]

BA03

[24]

SO03

[25]

MU07

[38]