{
  "annotation_id": "b894546d-652e-4c50-924d-1bbc03361fe5",
  "date_created": "2026-03-02T18:00:39.819000Z",
  "date_modified": "2026-03-02T18:00:39.819000Z",
  "file_hash": "d38d8dfc2e9c93a4f5c0e9895d4549bb3abd8be0325fc692bd84f8d48ee1ef8f",
  "private": false,
  "record": {
    "abstract": "We study generation of magnetic fields involving large spatial scales by\ntime- and space-periodic small-scale parity-invariant flows. The anisotropic\nmagnetic eddy diffusivity tensor is calculated by the standard procedure\ninvolving expansion of magnetic modes and their growth rates in power series in\nthe scale ratio. Our simulations, conducted for flows with random harmonic\ncomposition and exponentially decaying energy spectra, demonstrate that\nenlargement of the spatial scale of magnetic field is beneficial for generation\nby time-periodic flows. However, they turn out, in general, to be less\nefficient dynamos, than steady flows.",
    "arxiv_id": "physics/0207112",
    "authors": [
      "V. A. Zheligovsky",
      "O. M. Podvigina"
    ],
    "categories": [
      "physics.flu-dyn",
      "nlin.CD"
    ],
    "doi": "10.1080/0309192032000101676",
    "journal_ref": "Geophys. Astrophys. Fluid Dynamics, 97, 2003, 225-248",
    "title": "Generation of multiscale magnetic field by parity-invariant   time-periodic flows",
    "url": "https://arxiv.org/abs/physics/0207112"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6820fa4e-3412-4e73-a97c-0dd7e945992f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}