seismic refraction

{
  "id": "MLC-T-ENV-025140",
  "term": "seismic refraction",
  "field": "Environment",
  "definition": "1. A method of determining subsurface conditions by creating acoustic waves and measuring their travel times to the surface as they interface with two materials having different acoustic velocities.\n\n2. A surface geophysical method recording seismic waves refracted by geological strata.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Underground Storage Tank Sites Guide Glossary",
    "Environmental Geophysics Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/seismic-refraction/"
}