Fig. 1

Time series for a dominantly α2Ω dynamo with
ReM = 20, PrM = 5,
S = 0.1 and kf ≈ 3.1 (corresponding
to Run H of Table 3). Left:
rms value of
defined as
,
to be associated with the α2Ω mode (black/solid), and of
,
defined as
,
to be associated with the α2 mode (red/dashed).
Right: butterfly diagram of
showing the dynamo wave of the α2Ω mode; yellow (blue):
positive (negative) values.
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