{
  "annotation_id": "cf570a51-b300-4b03-9b9e-781e4954fa7f",
  "date_created": "2026-03-02T18:01:21.472000Z",
  "date_modified": "2026-03-02T18:01:21.472000Z",
  "file_hash": "8d7ba1f732add518af4486aa15ac7fd409c77fc7614362ac7901a18358439271",
  "private": false,
  "record": {
    "abstract": "In this paper we discuss a theoretical model for the interfacial profiles of\nprogressive non-linear waves which result from introducing a triangular\nobstacle, of finite height, attached to the bottom below the flow of a\nstratified, ideal, two layer fluid, bounded from above by a rigid boundary. The\nderived equations are solved by using a nonlinear perturbation method. The\ndependence of the interfacial profile on the triangular obstacle size, as well\nas its dependence on some flow parameters, such as the ratios of depths and\ndensities of the two fluids, have been studied.",
    "arxiv_id": "physics/9801035",
    "authors": [
      "Mina B. Abd-el-malek",
      "Malak N. Makar"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "doi": "10.2991/jnmp.1998.5.1.5",
    "journal_ref": "J. Nonlinear Math. Phys. 5 (1998), no. 1, 41-53",
    "title": "Progressive internal gravity waves with bounded upper surface climbing a   triangular obstacle",
    "url": "https://arxiv.org/abs/physics/9801035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e412501b-dfcf-444d-9a5d-e8dbe8bef7de",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}