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Table 2 Grain size and particle density distribution used to produce the settling velocity distribution “VSET-2008” reported in Fig. 5 d. Particle densities are from Macedonio et al. (1990)

From: Effects of eruption source parameter variation and meteorological dataset on tephra fallout hazard assessment: example from Vesuvius (Italy)

Φ

Total

Juveniles

Lithics

 

wt%

Density

wt%

Density

wt%

−5

1

1400

80

2600

20

−4

4

1400

80

2600

20

−3

7

1400

80

2600

20

−2

6

1400

80

2600

20

−1

6

1400

80

2600

20

0

12

1700

80

2600

20

1

17

1700

80

2600

20

2

10

2300

80

2600

20

3

6

2300

80

2600

20

4

7

2500

80

2600

20

5

9

2500

80

2600

20

6

9

2500

80

2600

20

7

5

2500

80

2600

20

8

1

2500

80

2600

20