In-situ Seismic Wave Velocity

Published: May 23, 2019 | Last updated: July 5, 2023

What Does In-situ Seismic Wave Velocity Mean?

In situ seismic wave velocity refers to the velocity of seismic waves measured in situ using seismic wave propagation methods. It is a non-destructive method of testing and is used to study sub-surface soil and rock strata. The measurements are made by seismic methods such as suspension logging, seismic refraction, continuous surface wave system (CSWS) and spectral analysis of surface waves (SASW), by generating Rayleigh waves.


Trenchlesspedia Explains In-situ Seismic Wave Velocity

Compressional and shear wave velocity is a fundamental material property that varies with external and internal conditions such as stress, temperature, and fluid saturation. Suspension logging is a method of measuring seismic wave velocity profiles. It can determine shear and compression wave velocity profiles in both soil and rock formations. The measurements are made in single, uncased boreholes that are filled with fluid and can also be used in cased boreholes.

This method is preferred over other methods such as crosshole and downhole to measure in-situ shear wave velocities.


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