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- W2334385145 abstract "Summary This paper compares two neighboring ray approaches in reflection attenuation tomography, which constrains a layered model of seismic attenuation based on seismic reflection amplitude ratios between neighboring rays from the same source. In this method, the subsurface seismic structure is approximated by a depth model which consists of a number of layers of varying thickness, and each layer has a constant velocity and a constant quality factor, or Q value. The objective is to differentiate amplitude change due to attenuation from the amplitude change caused by other factors. Then the Q values are inverted based on amplitude ratios of neighboring reflections from the same source. The use of the amplitude ratios between neighboring rays in lateral or depth directions from the same source helps to avoid the measurement of source amplitude, which is difficult to obtain and varies in different directions. A synthetic example based on synthetic traces generated from a depth model with a group of layers having rock properties from Gulf of Mexico is conducted to compare two neighboring ray approaches, neighboring rays with same reflectors and neighboring rays with same receivers. The inversion results give similar values close to true Q distribution for both approaches. However, the same receiver approach has the potential to avoid the variation in receiver sensitivity with a field data set. In addition, the same receiver method also provides the possibility of this method conducted in CDP domain." @default.
- W2334385145 created "2016-06-24" @default.
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- W2334385145 date "2009-01-01" @default.
- W2334385145 modified "2023-09-23" @default.
- W2334385145 title "Reflection attenuation tomography: Comparison between two neighboring ray approaches" @default.
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- W2334385145 doi "https://doi.org/10.1190/1.3255706" @default.
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