These results are also confirmed by low Vs (<500 m/s) measured near the surface, as proved by a few MASW
analyses, such as those shown in Figures 10(a1) and 10(a2).
Detailed statistical analysis ofthe variability ofthe characteristics ofthe subsurface materials, measured in terms of the penetration resistance (N) and shear wave velocity (Vs) values using SPT and MASW
data shows that the variability of both parameters decreases with an increase in the depth.
Inspections conducted by NTH in 2006 through 2009 included extensive CCTV surveys, man-entry inspections and Multiple Analysis of Surface Waves (MASW
) studies to identify loosened soil areas and potential voids.
- $4,875 available for one or more awards for graduate students in Social Work MASW
Affirmative Action Bursary
In this research, we consider three seismic survey techniques known as seismic refraction, multi-channel analysis of surface waves (MASW
) and shear wave surveys for the purpose of dam integrity assessment.
Multi-channel analysis of surface waves (MASW
), a geophysical method that uses surface (Raleigh) waves to image near surface (one to 50 meters) shear-wave velocity structure, could be employed to investigate the variability of areal and vertical shear-wave velocities and compare with the HVSR results.
Multi Channel Analysis of Surface Wave (MASW
) tests were carriedout in Delhi at 118 sites in predefined grids of 2kmX3km each to estimate the shear-wave velocities.
De Simone, executive director, MASW
, Jefferson City, MO, May 10, 1999).
* The Master of Arts in Social Work (MASW
), with completion of a research report in Industrial Social Work;