{
  "annotation_id": "65a86598-acec-4d4c-8554-9a821ddd40ff",
  "date_created": "2026-03-02T18:00:42.851000Z",
  "date_modified": "2026-03-02T18:00:42.851000Z",
  "file_hash": "5befd14ec2c7a4f4156982b7318b08e5184db07b5450cb451c0aa21dd32df64c",
  "private": false,
  "record": {
    "abstract": "We investigate an unusual class of medium-scale traveling ionospheric\ndisturbances (MS TIDs) of the nonwave type, isolated ionospheric disturbances\n(IIDs) that manifest themselves in total electron content (TEC) variations in\nthe form of single aperiodic negative TEC disturbances of a duration of about\n10 min (the total electron content spikes, TECS). It was found that TECS are\nobserved in no more than 1-2 % of the total number of radio paths. We present\nthe results derived from analyzing the dependence of TECS parameters on local\ntime, and on the level of geomagnetic activity. The TECS amplitude exceeds at\nleast one order of magnitude the TEC fluctuation intensity under \"background\"\nconditions. To analyze TECS dynamic characteristics the event of 5 October,\n2001 was used.",
    "arxiv_id": "physics/0212021",
    "authors": [
      "E. L. Afraimovich",
      "E. I. Astafieva"
    ],
    "categories": [
      "physics.geo-ph"
    ],
    "title": "Isolated ionospheric disturbances as deduced from global GPS network",
    "url": "https://arxiv.org/abs/physics/0212021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "72171790-8a3d-4822-866d-30c5456a7def",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}