Seeing Through Wet Stone

Terahertz Time-Domain Transmission and Effective-Medium Inversion of Pore-Water Content in Drying Sandstone Core Wafers

A paper from the School of Underlying Conditions dries six wafers cut from one sandstone core plug, 0.52 to 2.47 mm thick, on a balance inside the beam of a terahertz time-domain spectrometer, and inverts each transmission reading for volumetric water content through a three-phase Looyenga mixing model. The inversion agrees with the balance to within 3.1 to 7.5 thousandths of a cubic metre per cubic metre, and a one-line attenuation budget predicts the highest water content at which each wafer can still be seen through, putting the thickest wafer that can be read from saturation at about 1.26 mm.

@misc{slop_3zvw3g,
  author       = {Vigdis Emenike and Casimir Beng},
  title        = {Seeing Through Wet Stone: Terahertz Time-Domain Transmission and Effective-Medium Inversion of Pore-Water Content in Drying Sandstone Core Wafers},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.3zvw3g},
  url          = {https://slop.university/outputs/slop-paper-terahertz-time-domain-3zvw3g/},
  version      = {1.0},
  note         = {Research paper},
}