REFLECTIONS ON AMPLITUDES*期刊名称： Geophysical Prospecting
疯狂英语杂志作者： R. F. O'DOHERTY,N. A. ANSTEY
爱不胜防电影特效培训年份： 2010年
玄奥的意思
期号： 第3期
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史籍美味的英文怎么说摘要：Modern ismic recording instruments allow preci measurements of the amplitude of reflected signals. Intuitively we would expect that this amplitude information could be ud to increa our knowledge of the physical properties of the reflecting earth. The relevant factors defining the amplitude of a reflection signal are: spherical divergence, absorption, the reflection coefficient of the reflecting interface, the cumulative transmission loss at all interfaces above this, and the effect of multiple reflections. Of the factors, three—spherical divergence, the reflection coefficient and the transmission loss—are reasonably clear concepts (though the estimation of transmission loss from acoustic logs caud some difficulties in the hey-day of synthetic ismograms). Absorption still prents considerable problems of detail,
当幸福来敲门 电影 2008
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