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Table 2 A comparison between values produced by AshCalc and previously published values for the 1992 Cerro Negro eruption (Bonadonna & Costa, 2012 )

From: AshCalc–a new tool for the comparison of the exponential, power-law and Weibull models of tephra deposition

Resulting Weibull fit

Bonadonna & Costa., 2008

AshCalca

Volume (km3)

0.045

0.04556

Λ

4.2

4.131

k

0.78

0.7667

Θ

1.0004

1.02325

Relative mean squared error

0.000541037

0.00050026

  1. aDue to the stochastic nature of the fit the values are taken from the medial volume of five successive calculations by AshCalc.
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Journal of Applied Volcanology

ISSN: 2191-5040

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