Refraction Microtremor (ReMi) EvaluationsThe refraction microtremor (RE/MI) technique utilizes Rayleigh waves. The technique can be employed with traditional seismic refraction to obtain engineering properties and simultaneously evaluate:
The data are collected by generating semi-random seismic energy along a linear array of geophones. Urban settings with a high degree of cultural noise including vehicular traffic and other seismic noise sources are ideal. The data are subjected to spectral analysis to derive detailed layer velocity information so that generalized engineering properties such as shear modulus and Poisson's ratio can be calculated versus depth evaluated. |
Veterans Affairs Medical CenterNinyo & Moore performed a Refraction Microtremor (ReMi) survey during a preliminary design geotechnical evaluation for the proposed Veterans Affairs Medical Center. The survey was performed to obtain an average soil shear wave velocity and to evaluate the seismic Site Class as described in the International Building Code. Data was collected to a depth of approximately 100 feet using a geophone... |
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