{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "019:20"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Ahmad Mohammadi",
    "hasEmail": "mailto:ahmadmohamadi.gh@gmail.com"
  },
  "dataQuality": true,
  "description": "This submission includes focal-mechanism solutions derived from the Utah FORGE April 2022 Stage-3 stimulation. Waveforms were extracted around each event (short windows bracketing origin times) from the downhole three-component arrays in wells 58-32, 78-32, and 56-32 and the surface station UU.FORK; an initial Stage-3 catalog of several thousand located events was narrowed to ~1,200 preselected events and processed to produce a final high-quality set of 717 focal mechanisms.\n\nMethods combined automated phase picking with a noise-resistant deep-learning polarity classifier, simple amplitude-ratio measurements around arrivals, and Bayesian moment-tensor inversion using MTfit. Polarities and amplitude ratios were weighted by per-measurement confidence, posterior ensembles were sampled to quantify uncertainty, and solutions with low angular uncertainty (Kagan angle < 20 degrees) form the distributed high-quality catalog.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://gdr.openei.org/files/1773/focals.csv",
      "description": "This catalogs the focal-mechanism solutions for events recorded during Stage 3 of the April 2022 stimulation at Utah FORGE. Data includes event magnitude, location, strike, dip, rake, and average Kagan angle.",
      "format": "csv",
      "mediaType": "text/csv",
      "title": "Focal Mechanisms.csv"
    }
  ],
  "identifier": "https://data.openei.org/submissions/8518",
  "issued": "2025-09-15T06:00:00Z",
  "keyword": [
    "Bayesian inversion",
    "EGS",
    "FORGE",
    "Kagan angle",
    "MTfit",
    "Milford",
    "Utah",
    "Utah FORGE",
    "amplitude ratios",
    "deep-learning",
    "dip",
    "energy",
    "event catalog",
    "focal-mechanisms",
    "geophysical inversion",
    "geophysics",
    "geothermal",
    "hydraulic stimulation",
    "magnitude",
    "moment-tensor inversion",
    "stage 3",
    "strike"
  ],
  "landingPage": "https://gdr.openei.org/submissions/1773",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "modified": "2025-09-16T14:27:32Z",
  "programCode": [
    "019:006"
  ],
  "projectLead": "Lauren Boyd",
  "projectNumber": "EE0007080",
  "projectTitle": "Utah FORGE",
  "publisher": {
    "@type": "org:Organization",
    "name": "Texas A and M University"
  },
  "spatial": "{\"type\":\"Polygon\",\"coordinates\":[[[-112.916367,38.483935],[-112.879748,38.483935],[-112.879748,38.5148],[-112.916367,38.5148],[-112.916367,38.483935]]]}",
  "title": "Utah FORGE: Focal Mechanism Catalog from Stage 3 of the April 2022 Stimulation Test"
}