Lower-mantle structure from ScS-S differential travel times

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doi: 10.1038/352231a0
Authors:Woodward, Robert L.; Masters, Guy
Author Affiliations:Primary:
Scripps Inst. Oceanogr., Dep. Geophys. and Planet. Phys., La Jolla, CA, United States
Other:
Harvard Univ., United States
Volume Title:Nature (London)
Source:Nature (London), 352(6332), p.231-233. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:1991
Note:In English. 29 refs.; illus. incl. sketch maps
Summary:ScS-S differential travel times are ideal for investigating lower- mantle structure since they are almost insensitive to structures in the upper mantle, are relatively insensitive to errors in source location, and the differential time of ScS relative to S is readily measured to high precision. ScS-S differential travel times are used to show that the three-dimensional structure of the lower mantle is dominated by continental-scale features which are apparent in the raw data and are not due to complicated modelling. [R.K.H.]
Subjects:Body waves; Elastic waves; Long-period waves; Lower mantle; Mantle; Raypaths; Residual anomalies; S-waves; ScS-waves; Seismic waves; Seismograms; Seismology; Three-dimensional models; Traveltime; Traveltime residuals; Velocity structure; Differential traveltime
Abstract Numbers:92M/1220
Record ID:1991036868
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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