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Relationships between Shear Wave Velocity and Depth of Overburden

by Marshall Lew, LeRoy Crandall & Associates, Los, Angeles, CA, USA,
Kenneth W. Campbell, LeRoy Crandall & Associates, Los, Angeles, CA, USA,



Document Type: Proceeding Paper

Part of: Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties

Abstract:

Relationships between in-situ shear wave velocity and depth of overburden have been derived for various Quaternary age soils encountered primarily in Southern California. The geotechnical parameters found to be significant were geologic age, gravel content, water table depth, and dry density, as well as depth of overburden. The data base for deriving the relationships consists of over 270 shear wave velocity surveys which included refraction, downhole, and cross-hole surveys. The surveys generally provided data to depths of about 100 feet (about 30 meters), however, several of the surveys provided shear wave velocity data to depths of 200 feet (about 60 meters) and greater. Compressional wave velocity data was obtained in many of the same surveys and relationships between compression wave velocity and depth of overburden are also presented.

Subject Headings: Wave velocity | Shear waves | Seismic waves | Wave measurement | Fluid velocity | Shear stress | Soil compression | California | United States

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