In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 129, No. 4_Supplement ( 2011-04-01), p. 2514-2514
Abstract:
A laser Doppler vibrometer (LDV) based multi-channel analysis of surface wave (MASW) method has recently been developed. In the method, an electro-mechanical shaker was used as a seismic source operating in a frequency sweeping mode to excite Rayleigh waves propagating through the soil surface. The surface vibrations along a straight line were detected by a moving LDV. Unlike conventional MASWs that explore soil profile from a few meters to a few tens of meters below the ground, the present MASW investigates underground depth from a few centimeters to a few meters due to its high frequency excitation and high spatial resolution of moving LDV. Two approaches will be used to create two-dimensional (2D) image of subsurface features: dynamic moveout and dispersive curve inversion. The geological anomalies can be identified from the contrasts of the 2D image. Some details and cases will be addressed.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2011
detail.hit.zdb_id:
1461063-2
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