Seismic RefractionThe seismic refraction method is based on the measurement of the travel time of seismic waves refracted at the interfaces between subsurface layers of different velocity. Seismic energy is provided by a source located on the surface. Energy radiates out from the shot point, either traveling directly through the upper layer or traveling down to and then laterally along higher velocity layers before returning to the surface. This energy is detected on the surface using a linear array of geophones. Observation of the travel-times of the refracted signals provides information for the depth profile and velocity structure of the subsurface at the area surveyed. The primary applications of seismic refraction include:
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Desert Hills Water TankNinyo & Moore performed geophysical testing followed by a design geotechnical evaluation for the Desert Hills Water Tank. The project involved design and construction of a 750,000 gallon water storage tank 64 feet in diameter and 32 feet tall on an existing fill pad. The project also included design and construction of an expansion of the existing pad including new fill and cut areas. The purposes of our study were to |
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