Abstract
This is the first paper in a four-part sequence that examines the nature of mantle layering required by the multiple-ScS phases and internal reflections observed within the reverberative interval of SH-polarized seismograms. Here we present path-averaged estimates of the two-way travel times through the crust+mantle (τScS) and crust alone (τM), the whole mantle quality factor (QScS), and the reflection coefficient at the M discontinuity (R0(zM)) obtained by iterative waveform inversion of ScS reverberations. We show that QScS estimates derived from direct waveform inversion can be biased significantly if reverberations originating within the crust are ignored, especially in continental regions where the crust is thick. -from Authors
Original language | English (US) |
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Pages (from-to) | 19,749-19,762 |
Journal | Journal of Geophysical Research |
Volume | 96 |
Issue number | B12 |
DOIs | |
State | Published - 1991 |