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Volume 13 Number 3
  • E-ISSN: 1365-2478

Abstract

A

A theory is developed to predict the amplitude and velocity of the first arrival produced by a thin solid refractor embedded in a solid environment. Laboratory experiments on a three dimensional model substantially confirm the theory. The essential conclusion may be found in Figure 8 where it is shown that for a constant wavelength, and for thicknesses up to about one half a wavelength, the attenuation per unit distance decreases monotonically with increase of refractor thickness.

The assumption is made that the amplitude, , attenuates as ()‐n exp(‐β), where is horizontal distance and and β are constants. It is emphasised that it is difficult to obtain reliable values for and β from the initial amplitude measurements.

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2006-04-27
2024-04-28

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  • Article Type: Research Article

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