{
  "abstract": "We present a multi-parameter simulation-based inference framework for joint Bayesian recovery of subsurface velocity and acoustic impedance from seismic data. A score-based diffusion model is conditioned on two complementary Common Image Gathers (CIGs): an inverse-scattering CIG encoding reflectivity amplitude and an anti-ISIC CIG encoding kinematic velocity errors. The model simultaneously samples the posterior distributions of both parameters. Training labels are deliberately decoupled to prevent the model from exploiting the Gardner relationship: velocity targets are lightly smoothed to match the long-wavelength content of the anti-ISIC CIG, while impedance targets retain the unsmoothed ground truth. On the Compass benchmark the model achieves velocity SSIM of 0.967 (RMSE 0.050 km/s) and impedance SSIM 0.867 (RMSE 0.279 km/s g/cm^3), with velocity quality confirmed by CIG focusing.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.05476",
  "author_total": 3,
  "authors": [
    {
      "name": "Yunlin Zeng"
    },
    {
      "name": "Huseyin Tuna Erdinc"
    },
    {
      "name": "Felix J. Herrmann"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9y6yys2e9ht8a.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.05476",
  "fulltext_url": null,
  "id": "9y6yys2e9ht8a",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.05476",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.geo-ph"
    ],
    [
      "openalex",
      "1908|Seismic Imaging and Inversion Techniques"
    ]
  ],
  "openalex": "W7212058166",
  "pdf_url": "https://arxiv.org/pdf/2609.05476",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9y6yys2e9ht8a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2609.05476",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.05476"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "arxiv:physics.geo-ph",
      "subfield": "geophysics"
    }
  ],
  "title": "Bayesian Joint Velocity and Impedance Inversion via Diffusion Models Conditioned on Common Image Gathers",
  "title_text": "Bayesian Joint Velocity and Impedance Inversion via Diffusion Models Conditioned on Common Image Gathers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/9y6yys2e9ht8a",
  "venue": "arXiv",
  "versions": []
}