Borehole seismic-source radiation in layered isotropic and anisotropic media: Real data analysis
- Massachusetts Inst. of Tech., Cambridge, MA (United States). Earth Resource Lab.
The source and receiver boreholes in crosshole seismology are usually considered unimportant except for their effects on body wave radiation and reception patterns. The authors present counter examples by analyzing a real crosswell data set from Buckhorn, Illinois, using computer simulations. The algorithm used is a combination of the boundary element method (for the source borehole) and the borehole coupling theory (for the receiver borehole) in transversely isotropic media. They find that most of the strong events in the data are inexplicable unless both boreholes are included in the modeling. The importance of the boreholes stems from the local geology which consists of highly contrasted sedimentary rocks. At a high-contrast interface, wave conversion is no longer a negligible secondary effect. In fact, converted waves can be stronger than the primaries.
- OSTI ID:
- 87544
- Journal Information:
- Geophysics, Journal Name: Geophysics Journal Issue: 3 Vol. 60; ISSN 0016-8033; ISSN GPYSA7
- Country of Publication:
- United States
- Language:
- English
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