Table.  Parameters of major non-recurrent geomagnetic storms, Forbush decreases of the 23rd cycle and their solar eruptive sources 

1

2

3

4

5

6

7

8

9

10

11

12

13

Geospace disturbance

 

Identifi-

cation

level

 

Eruption on the Sun

Transit time [h]

 

CDAW

No.

GMS peak

(date, time)

 

Dst

[nT]

 

FD

[%]

 

Disturbance

onset,

Shock, SC

(date, time)

 

Date, time

 

Flare

soft

X-ray

class

 

Position

 

 

Type

 

Magnetic

flux Φ

[1020 Mx]

 

 

ΔTo

 

ΔTp

3

1997/05/15, 13

-115

1.7

15, 01:59

S1

12, 04:55

C1.3

N21W06

AR

95

69

80

4

1997/10/11, 04

-130

1.1

10, 16:12

S1

06, ~15:00

S27W05

non-AR

22

97

109

5

1997/11/07, 05

-110

2.1

06, 22:48

S1

04, 05:58

X2.1

S14W33

AR

161

65

71

9

1998/05/04, 06

-205

3.5

04, 02:15

M2

02, 13:42

X1.1

S15W15

AR

220

37

40

16-17

1998/11/08, 07

-149

7.4

08, 04:51

S1, R

05, 19:55

M8.4

N22W18

AR

276

57

59

18

1998/11/13, 22

-131

2.3

13, 01:43

S1

09, 17:58

C2.3

N18E00

non-AR

76

80

100

21

1999/09/23, 00

-173

1.9

22, 12:09

S1

20, 05:50

C2.8

S21W05

non-AR

47

54

66

22

1999/10/22, 07

-237

2.4

21, 02:25

S1

17, 23:25

C1.2

S26E08

non-AR

64

75

104

24

2000/02/12, 12

-133

3.7

11, 23:52

S1, R

09, 20:06

C7.4

S17W40

AR

138

52

64

26

2000/05/24, 09

-147

3.3

23, 14:25

M2

20, 05:35

C7.6

S15W08

AR

69

81

99

27

2000/07/16, 01

-301

11.7

15, 14:37

S1

14, 10:24

X5.7

N22W07

AR

470

28

39

29

2000/08/12, 10

-235

2.7

11, 18:46

S1

09, 16:22

C2.3

N11W11

AR

132

50

66

30

2000/09/18, 00

-201

8.1

17, 17:00

M2

16, 04:26

M5.9

N14W07

AR

234

37

44

32

2000/10/14, 15

-107

3.6

12, 22:28

S1

09, 23:43

C6.7

N01W14

AR

122

71

111

34

2000/11/06, 22

-159

7.8

06, 09:47

S2, R

03, 19:02

C3.2

N02W02

AR

214

63

75

35

2000/11/29, 14

-119

2.7

28, 05:25

M2

26, 16:48

X4.0

N18W38

AR

149

37

69

36

2001/03/20, 14

-149

2.9

19, 11:14

S2, R

15, 21:59

C1.9

N11W09

AR

108

85

112

37

2001/03/31, 09

-387

4.1

31, 00:52

M2

29, 10:15

X1.7

N20W19

AR

377

39

47

38

2001/04/12, 00

-271

12.8

11, 13:43

M2

10, 05:26

X2.3

S23W09

AR

294

32

43

41

2001/08/17, 22

-105

6.3

17, 11:03

S1

14, 12:42

C2.3

N16W36

non-AR

68*

70

81

42

2001/09/26, 02

-102

8.3

25, 20:25

S1

24, 10:38

X2.6

S16E23

AR

271

34

39

43

2001/10/01, 09

-148

1.9

30, 19:24

S1

28, 08:30

M3.3

N08E19

AR

170

59

72

44

2001/10/03, 15

-166

2.5

03, 02:00

S1

29, 11:06

M1.8

N13E03

AR

134

87

100

45

2001/10/21, 22

-187

5.4

21, 16:48

S1

19, 16:30

X1.6

N15W29

AR

220

48

53

46

2001/10/28, 12

-157

1.9

28, 03:13

M2

25, 15:02

X1.3

S18W19

AR

293

60

69

48

2001/11/24, 17

-221

9.2

24, 05:56

M2

22, 23:30

M9.9

S14W36

AR

237

30

41

50

2002/04/18, 08

-127

6.2

17, 11:07

S1

15, 03:55

M1.2

S15W01

AR

236

55

76

51

2002/04/20, 09

-149

-

20, 00:00

S1

17, 08:24

M2.6

S14W34

AR

286

64

73

52

2002/05/11, 20

-110

1.4

11, 10:14

S1

08, 13:27

C4.2

S12W07

AR

137

69

79

55

2002/08/21, 07

-106

0.9

20, 14:00

S2

16, 12:32

M5.2

S14E20

AR

117

97

114

59

2002/10/04, 09

-146

3.0

02, 23:00

S1

30, 02:00

C2.5

S17W17

non-AR

20

93

127

63

2003/05/30, 00

-144

7.7

29, 12:24

M2

27, 23:07

X1.3

S07W17

AR

160*

37

49

64

2003/06/18, 10

-141

3.7

18, 05:01

M2

14, ~05:00

N22W15

non-AR

46

96

101

66

2003/08/18, 16

-148

2.6

17, 14:21

S1, R

14, 18:38

C3.1

S14E00

AR

177

68

93

67

2003/10/30, 01

-353

28.0

29, 06:11

S1

28, 11:10

X17.2

S16E08

AR

871

19

38

68

2003/10/30, 23

-383

30, 16:00

S1

29, 20:49

X10.0

S15W02

AR

520

19

26

69

2003/11/20, 21

-422

4.7

20, 08:03

S1

18, 08:31

M3.9

N00E18

AR

133

48

60

70

2004/01/22, 14

-130

8.6

22, 01:37

S1

20, 00:40

C5.5

S13W11

AR

273

49

61

73

2004/07/23, 03

-99

4.3

22, 10:36

S1

20, 12:32

M8.6

N10E35

AR

172

46

62

74

2004/07/25, 17

-136

4.6

24, 06:13

S2, R

22, 22:58

M1.6

N05E04

AR

257

31

66

75

2004/07/27, 14

-170

13.5

26, 22:49

S1

25, 13:49

M2.2

N08W33

AR

363

33

48

76

2004/08/30, 23

-129

0.7

29, 10:06

S2, R

26, 13:04

B8.4

S11W38

AR

46.4

69

106

77

2004/11/08, 07

-374

5.2

07, 18:27

M2, R

06, 00:34

M3.9

N09E05

AR

252

42

54

78

2004/11/10, 11

-263

8.3

09, 19:00

M2, R

07, 16:06

X2.0

N09W17

AR

290

51

67

79

2005/01/18, 09

-103

11.8

18, 06:00

M2, R

17, 09:52

X3.8

N15W25

AR

378

20

23

81

2005/05/08, 19

-110

5.1

08, 08:00

M2, R

06, 17:05

C8.5

S09E28

AR

294

39

50

82

2005/05/15, 09

-247

9.5

15, 02:38

S1

13, 16:57

M8.0

N12E12

AR

266

34

40

83

2005/05/20, 09

-83

1.1

20, 04:01

S1

16, 13:01

C1.2

N13W29

AR

54

87

92

84

2005/05/30, 14

-113

4.3

29, 09:52

S2

26, 14:20

B7.5

S12E13

AR

89*

68

96

90

2006/12/15, 08

-162

8.6

14, 14:14

S1

13, 02:40

X3.4

S06W24

AR

222

35

53

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Column 1 - An event number corresponding to the Coordinated Data Analysis Workshop (CDAW) Catalog of the severe geomagnetic storms with Dst <-100 nT (Zhang, J., Richardson, I.G., Webb, D.F., Gopalswamy, N., Huttunen, E., Kasper, J., et al.: 2007a, J. Geophys. Res. 112, A10102;   Zhang, J., Richardson, I.G., Webb, D.F., Gopalswamy, N., Huttunen, E., Kasper, J., et al.: 2007b, J. Geophys. Res. 112, A12103.).

Columns 2-5 -  Information on the geospace disturbance, including the GMS peak date and time, minimum Dst value, FD magnitude, date and time of the disturbance onset (SC).

Column 6 - Levels GMS identification with their solar sources: labels S1 and "+" correspond to unambiguous identifications; labels S2, S2R, M2, M2R, and "-" correspond to probable identifications. The letter `R' after the S1, S2, M2 codes indicates that the solar source of the given FD was refined by us in comparison with the CDAW Catalog.

Columns 7-10 - Information on the corresponding solar eruptive source: date and time of the eruption determined mainly from the peak time of the soft X-ray flare emission, its GOES class, and the position of the eruption site. In column 10, the label `AR' means that the eruption occurred in and around an AR, while the label `non-AR' indicates events resulting from filament eruptions outside ARs.

Column 11 - The summarized unsigned magnetic flux in dimmings and arcades at the photospheric level (Φ) in units of 1020 Mx. In three events marked by the asterisks, the dimming and arcade areas and the corresponding magnetic fluxes were measured by using two to three suitable 195 images obtained with the 6-hour interval.

Columns 12, 13 - The GMS onset (ΔTo) and peak (ΔTp) transit times, measured from the eruption moment at the Sun (the peak time of an associated soft X-ray burst).