Evolution of the magnetic field amplified by the small-scale dynamo. The dashed lines show the evolution on the viscous scale ℓ_ν, the solid lines the one on the forcing scale of the turbulence L. We use in this plot L = 10³ pc. The different colors indicate different turbulent velocities: the red lines have velocities of 1 km s^-1, the green lines 10 km s^-1 and the orange lines 100 km s^-1. The microphysical quantities are determined in Sect. 2.2. The viscosity is ν = 8.7 × 10¹⁵ cm² s^-1, the magnetic resistivity η = 37.8 cm² s^-1, the density is n = 10 cm^-3 and the mean particle mass is m = 1.6 × 10^-24 g. The initial magnetic field strength on the viscous scale in this plot is B₀ = 10^-20 G and the slope of the turbulence spectrum ϑ is 0.4.