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Estimation of shear wave properties in the upper sea-bed using seismo-acoustical interface waves

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Abstract
Acoustic interface waves have been recorded with a bottom deployed acoustic array at several locations. High resolution array processing technique (Prony) is used to estimate velocity versus frequency for the interface waves. An inversion scheme based general linearization is used to obtain estimates of shear velocity as function of depth. The data collection with subsequent processing and interpretation is intended for operational use in conjunction with normal refraction surveying using the same equipment. This paper discusses survey design in terms of measurabgle shear velocities, depth of investigation and resolution as function of frequency and array configuration. Examples of processing and interpreation of field data are presented.

URI
http://hdl.handle.net/20.500.12489/416

Report Number
CP-45

Source
In: High Frequency Seafloor Acoustics (SACLANTCEN Conference Proceedings CP-45), 1997, pp. 155-162

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Date
1997

Author(s)
Frivik, S. A.
; 
Allnor, R.
; 
Hovem, Jens M.

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CP-45_Frivik_EstimationShearWave.pdf (2.971Mb)

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