{
  "annotation_id": "c0f42ef9-3cab-4c66-ac12-f9a5e53391dc",
  "date_created": "2026-03-02T18:01:18.025000Z",
  "date_modified": "2026-03-02T18:01:18.025000Z",
  "file_hash": "37ff84835a940e313038389c74b493ebdc31a7f2089a64fd04c2727fa407678f",
  "private": false,
  "record": {
    "abstract": "We report the first experimental observation of reversals of a dynamo field\ngenerated in a laboratory experiment based on a turbulent flow of liquid\nsodium. The magnetic field randomly switches between two symmetric solutions B\nand -B. We observe a hierarchy of time scales similar to the Earth\u0027s magnetic\nfield: the duration of the steady phases is widely distributed, but is always\nmuch longer than the time needed to switch polarity. In addition to reversals\nwe report excursions. Both coincide with minima of the mechanical power driving\nthe flow. Small changes in the flow driving parameters also reveal a large\nvariety of dynamo regimes.",
    "arxiv_id": "physics/0701076",
    "authors": [
      "M. Berhanu",
      "R. Monchaux",
      "S. Fauve",
      "N. Mordant",
      "F. Petrelis",
      "A. Chiffaudel",
      "F. Daviaud",
      "B. Dubrulle",
      "L. Marie",
      "F. Ravelet",
      "M. Bourgoin",
      "Ph. Odier",
      "J. -F. Pinton",
      "R. Volk"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "title": "Magnetic field reversals in an experimental turbulent dynamo",
    "url": "https://arxiv.org/abs/physics/0701076"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "574df12e-1c90-41e7-bd22-26ee8b01aca0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}