Abstract
Stress field in unconsolidated granular media is very complex and directly affects elastic wave velocities. The state of stress in granular media can be explored using two limiting cases, hydrostatic state of stress and uniaxial state of stress. Effective media modeling of granular packs predicts that the presence of uniaxial stress field, caused by vertical loading, the granular pack will become anisotropic. In this study we investigate the effects of the state of stress on surface wave’s phase velocity. Specifically, the anisotropy associated with non-hydrostatic state of stress is considered. Both Rayleigh waves and Love waves behavior is explored using synthetic models and compared to multi component field data, acquired on a sand dune. Surface wave phase velocities derived from the multi component experiment compare favorably with numerical simulations of granular packs under uniaxial state of stress. This comparison supports the idea that in a sand dune vertical stress is much greater than horizontal stress and that anisotropy should be considered when analyzing data in unconsolidated near surface materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
