Datum

{
  "id": "MLC-T-OAG-000956",
  "term": "Datum",
  "field": "Oil and gas",
  "definition": "A reference surface or plane to which elevations or depths are measured and corrected in seismic data processing. This common reference level removes the effects of varying topography and near-surface velocity anomalies, allowing for accurate interpretation of subsurface structures. Common datums include sea level or a specific elevation above it.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/datum/"
}