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Table 3 Computational and input parameters

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

Description

Reference

Variation range

Total mass

5 × 1011 kg

1011– 1012 kg

Column height

18 km

12 – 22 km

Horizontal diffusion coefficient

5000 m2/s

1000 – 10000 m2/s

Column shape (Suzuki coefficient)

4

unchanged

Meteorological data

ERA Interim

see Table 1

Settling velocity distribution

VSET-2008

VSET–1990, –79, –1631,–2008

Grid spacing

400 × 400 m

unchanged