KGS Home Geophysics Home Reports

Kansas Geological Survey, Open-file Report 2004-30


MASW to Map Shear-Wave Velocity of Soil

by
Choon B. Park and Richard D. Miller


KGS Open-file Report 2004-30

Report to
Camp Dresser and McKee, Inc., Bellevue, Washington
May 2004

Abstract

Two surveys using the multichannel analysis of surface waves method were conducted over a soil site in Tacoma Water's Green River Facility, Washington, at the proposed future site of a chemical treatment facility. The purpose of these surveys was to map shear-velocity (Vs) distribution before and after Deep Dynamic Compaction operations. It is generally accepted that soil stiffness is proportional to shear velocity. Soil at this site consisted of a very heterogeneous mixture of gravel and cobbles in a sand-and-silt matrix. Results from each survey are represented by 2-D Vs maps representative of soil characteristics below the surveyed lines. From each survey two Vs maps were produced: one map was constructed from dispersion curves analyzed subjectively, whereas a second map was constructed from the same dispersion curves analyzed objectively. The major difference was the use of automatic, computer-aided analysis for the objective analysis.

The complete report is available as Adobe Acrobat PDF files.

To read these files, you will need the Acrobat PDF Reader, available free from Adobe.


Kansas Geological Survey, Geophysics
Placed online Feb. 10, 2006
Comments to webadmin@kgs.ku.edu
The URL for this page is http://www.kgs.ku.edu/Geophysics/OFR/2004/OFR04_30/index.html