Epsilon (ε)

{
  "id": "MLC-T-OAG-001314",
  "term": "Epsilon (ε)",
  "field": "Oil and gas",
  "definition": "A Thomsen parameter that quantifies the anisotropy of P-wave velocity in the horizontal direction relative to the vertical direction in transversely isotropic media. It describes the difference between the P-wave velocity parallel to the layering and the P-wave velocity perpendicular to the layering. Epsilon is a dimensionless quantity, with values typically ranging from 0 for isotropic media to 0.4 or higher for strongly anisotropic shales.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/epsilon-e/"
}