{
  "annotation_id": "1f8a165e-bfe6-4ab4-9b11-519c83070db0",
  "date_created": "2026-03-02T18:00:39.825000Z",
  "date_modified": "2026-03-02T18:00:39.825000Z",
  "file_hash": "1d192c8801802ff2467ce03b69201aa7d877105b93d6a4eb1a439816e144ae5a",
  "private": false,
  "record": {
    "abstract": "We propose a model for the Pleistocene Ice Age, assuming the following\nscenario: Between 3 Myr and 11.5 kyr BP a Mars-sized object existed which moved\nin a highly eccentric orbit. Originating from this object, gas clouds with a\ncomplex dynamics reduced Earth\u0027s insolation and caused a drop in the global\ntemperature. In a close encounter, 11.5 kyr ago, tidal forces deformed the\nEarth. While the shape of the gyroscope Earth relaxed, the North Pole moved\ngeographically from Greenland to its present position. During this close\nencounter, the object was torn to pieces, each of which subsequently evaporated\nor plunged into the sun. These events terminated the Ice Age Epoch.",
    "arxiv_id": "physics/0204004",
    "authors": [
      "W. Woelfli",
      "W. Baltensperger",
      "R. Nufer"
    ],
    "categories": [
      "physics.geo-ph"
    ],
    "title": "An additional planet as a model for the Pleistocene Ice Age",
    "url": "https://arxiv.org/abs/physics/0204004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9dbde24b-619c-403d-bf96-45262f47a816",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}