Laboratory assessment of the equivalent apertures of a rock fracture

Andrew R. Piggott, Derek Elsworth

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


Hydraulic, electrical, and tracer test results are presented for a natural fracture in granite. The hydraulic and electrical apertures of the fracture are similar and suggest minimal fracture surface‐to‐surface contact. Tracer aperture exceeds hydraulic aperture indicating transport at a rate less than that predicted on the basis of hydraulic aperture. Numerical simulation of tracer transport reveals that transport within the fracture is not explicable in terms of parallel plate flow and that transport occurs locally at rates in excess of the overall rate defined by tracer aperture.

Original languageEnglish (US)
Pages (from-to)1387-1390
Number of pages4
JournalGeophysical Research Letters
Issue number13
StatePublished - Jul 9 1993

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences


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