Rarefaction

{
  "id": "MLC-T-OAG-003047",
  "term": "Rarefaction",
  "field": "Oil and gas",
  "definition": "A region in a propagating seismic wave where the particles of the medium are spread farther apart than their equilibrium positions, resulting in a decrease in density and pressure. This is the opposite of compression, where particles are pushed closer together. Rarefaction and compression cycles constitute the propagation of P-waves through the subsurface.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/rarefaction/"
}