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Table 2 Summary of grain size analysis

From: Sedimentation process of ashfall during a Vulcanian eruption as revealed by high-temporal-resolution grain size analysis and high-speed camera imaging

 

Bulk

SP#1

SP#2

SP#3

 

Md phi

σ phi

Md phi

σ phi

Areal%

Md phi

σ phi

Areal%

Md phi

σ phi

Areal%

sj0326-01

-0.01

0.47

0.13

0.38

99.6

7.17

0.30

0.4

   

sj0326-02

0.19

0.35

0.30

0.32

99.5

7.26

0.27

0.5

   

sj0326-03

0.44

0.40

0.56

0.34

100.0

      

sj0326-04

0.65

0.38

0.76

0.34

100.0

      

sj0326-05

0.77

0.40

0.89

0.36

100.0

      

sj0326-06

0.92

0.41

1.02

0.37

99.6

7.14

0.27

0.4

   

sj0326-07

0.88

0.43

0.99

0.39

100.0

      

sj0326-08

1.04

0.44

1.15

0.39

99.3

6.33

0.39

0.7

   

sj0326-09

1.17

0.45

1.27

0.40

98.7

6.37

0.48

1.3

   

sj0326-10

1.24

0.45

1.38

0.35

99.5

6.34

0.35

0.5

   

sj0326-11

1.51

0.50

1.60

0.43

97.3

6.58

0.59

2.7

   

sj0326-12

2.04

0.96

2.09

0.45

92.3

5.87

0.83

7.7

   

sj0326-13

2.13

1.15

2.13

0.46

85.1

5.75

1.08

14.9

   

sj0326-14

3.06

1.55

2.79

0.39

65.0

5.93

0.88

35.0

   

sj0326-15

2.78

1.37

2.72

0.38

76.4

5.88

1.26

23.6

   

sj0326-16

1.14

1.47

0.90

0.44

62.3

2.56

0.73

29.3

6.04

0.82

8.4

sj0326-17

1.14

1.30

1.09

0.45

78.3

2.78

0.86

15.9

6.39

0.73

5.8

sj0326-18

1.50

1.18

1.51

0.48

86.9

3.14

0.61

6.7

6.50

0.73

6.4

sj0326-19

1.83

1.04

1.86

0.49

90.0

3.34

0.43

4.2

6.37

0.74

5.7

sj0326-20

2.22

1.06

2.24

0.47

88.3

3.68

0.49

4.2

6.26

0.67

7.4

sj0326-21

2.44

0.96

2.49

0.43

90.1

3.83

0.49

3.5

6.32

0.66

6.4

sj0326-22

2.64

0.93

2.68

0.39

88.4

3.64

0.44

4.6

6.41

0.61

7.0