SEASONAL SOIL STRENGTH BY SPECTRAL ANALYSIS OF SURFACE WAVES

In this study, spectral analysis of surface waves (SASW) techniques were applied to a series of tests conducted at different times during the springs of 1989 and 1990, in order to determine the time-varying properties of soils. The study sought to develop a technique using elastic waves propagation to locate the frost line in thawing soils, and apply spectral analysis techniques to determine the wave-velocity-versus-depth relationship for both frozen and thawed soils. The study also determined the relationship between wave velocity, depth, and time for two annual freeze-thaw periods. It was found that wave velocities at a given depth tended to start high (frozen) and decrease to a low value (thawed wet) and then increase (thawed dry) as the time increases from the first day of spring thaw to the last day of spring freezing. These and other study findings are discussed.

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00620866
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 31 1992 12:00AM