# Long-Wave Elastic Anisotropy Produced by Horizontal Layering

@article{Backus1962LongWaveEA, title={Long-Wave Elastic Anisotropy Produced by Horizontal Layering}, author={George Backus}, journal={Journal of Geophysical Research}, year={1962}, volume={67}, pages={4427-4440} }

A horizontally layered inhomogeneous medium, isotropic or transversely isotropic, is considered, whose properties are constant or nearly so when averaged over some vertical height l′. For waves longer than l′ the medium is shown to behave like a homogeneous, or nearly homogeneous, transversely isotropic medium whose density is the average density and whose elastic coefficients are algebraic combinations of averages of algebraic combinations of the elastic coefficients of the original medium…

## 1,512 Citations

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