Lateral variations in mantle velocity structure and discontinuities determined from P, PP, S, SS and SS - S{sub d}S travel time residuals
Journal Article
·
· Journal of Geophysical Research
- Lawrence Berkeley Laboratory, CA (United States)
- Univ. of Texas, Austin, TX (United States)
The arrival times of seismic P- and S-waves are used in constructing a mantle velocity model and a model of boundary topography of the 410-km and 660-km discontinuities. Travel times obtained from events listed in the catalog of the International Seismology Centre (ISC) are relocated relative to the velocity model of the International Association of Seismology and Physics of the Earth`s Interior 1991 (IASP91). The role of perturbations of the 410-km and 660-km discontinuities on the models of P- and S-wave velocity variations is discussed. Correlations are not evident when velocity anomalies are plotted as a function of transition zone thickness.
- OSTI ID:
- 263035
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: B12 Vol. 100; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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