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The Earth as a seismic absorption band.
Science (New York, N.Y.)
|June 3, 1977
Summary
Earth
Area of Science:
- Geophysics
- Seismology
- Earth Science
Background:
- Seismic wave attenuation reveals Earth's imperfect elasticity.
- Absorption-induced dispersion results in frequency-dependent elastic moduli, impacting seismic data inversion.
Purpose of the Study:
- To address the discrepancy between body wave and free oscillation interpretations of Earth structure.
- To improve the accuracy of seismic data inversion by accounting for absorption effects.
Main Methods:
- Reinversion of normal mode data.
- Correction for seismic wave absorption and dispersion.
Main Results:
- Accounting for absorption and dispersion resolves discrepancies in Earth structure interpretations.
- Corrected normal mode data align with body wave interpretations.
Conclusions:
- Seismic wave attenuation and dispersion are critical factors in accurately modeling Earth's structure.
- Correcting for these effects enhances the reliability of geophysical interpretations from seismic data.
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