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Table 1

Scaling laws for anelastic and Boussinesq models.

Scaling Anelastic Boussinesq
c x σ c x σ

1.58 0.35 0.017 1.08 0.37 0.017
Multipolar branch 1.19 0.34 0.067 0.65 0.35 0.006
1.66 0.42 0.025 0.73a 0.39a 0.013a
1.79b 0.44b 0.010b
τdiss = cRox 0.75 0.76 0.024 0.8
0.25 0.59 0.032 0.06 0.52 0.004

Notes. Results for Boussinesq models were taken from Yadav et al. (2013a; see also Schrinner et al. 2012). Yadav et al. (2013a) distinguished between dipolar and multipolar dynamos for their Rossby number scaling, whereas we derived a single power law for both classes of dynamo models.

(a)

Dipolar models.

(b)

Multipolar models.

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