Notes. Different model configurations discussed in this paper. The nomenclature is as follows: capital letters “D” and “H” stand for regular fields in the disk and the halo, respectively. Capital letters “I” and “A” denote isotropic and anisotropic turbulent fields. For example, “DAIHI” stands for a configuration with regular fields together with isotropic and anisotropic turbulent fields in the disk (DAI), and regular and only isotropic turbulent fields in the halo (HI). In case of a three-layer system, for example, “HDH” means “regular (far side) halo field + regular disk field + regular (near-side) halo field” (see bottom panel of Fig. 8). The checkmarks show which fields are switched “on” and “off”. Anisotropy of the halo field is neglected in our study to make the models simpler.