Theoretical free-oscillation spectra: the importance of wide band coupling

Journal article

Illustrative calculations are presented of the effect of the coupling of large groups of Earth's normal modes in a realistic 3-D earth model. In previous work the effect of modal splitting and coupling has been treated either in the self-coupling approximation (SC) or in the group-coupling approximation (GC), also known as quasi-degenerate perturbation theory. In SC a mode is treated as isolated in the spectrum and the theory of degenerate splitting is used to calculate the effect of lateral ...

Expand abstract

Authors: Deuss, A; Woodhouse, J

• Publication status: Published
• Journal: GEOPHYSICAL JOURNAL INTERNATIONAL
• Volume: 146
• Issue: 3
• Pages: 833-842
• Publication date: 2001-09-01
• DOI: 10.1046/j.1365-246X.2001.00502.x
• EISSN: 1365-246X
• ISSN: 0956-540X
• Language: English
• Keywords: normal modes; mode coupling; synthetic seismograms; seismic tomography; mode splitting