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Table 4

Three FP models.

Model 1 2 3

Emission period,
starting on 10 Feb. 2009 250 days 30 days 1 day

Particle size range (mm), a 0.3–3 1.5–100 1.5–20
Particle size distribution power –1 –3.9 –3.5
Emission velocities (m/s) 0.20–0.30 0.10–0.20 0.20–0.30

Fidelity of the model Poor Very poor OK

Notes. The emission duration is set, the other parameters are adjusted to reproduced the observed tail.

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