Reassessment of a reported S‐delay under Trindade

H. C. Nataf*, T. Lay, D. L. Anderson, E. A. Okal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We present a correction to a paper by Okal and Anderson (1975) about multiple ScS travel‐time anomalies. We have reanalyzed data for ScS2 surface bounces in the South Atlantic Ocean. From these data an ScS2‐S residual of 23.6 seconds was found by Okal and Anderson (1975). This corresponded to an ScS2 surface bounce point under Trindade island and was inferred to be due to very slow upper mantle associated with the Trindade hot spot. The analysis we present here invalidates this conclusion. The nature of the upper mantle under Trindade is an open issue.

Original languageEnglish (US)
Pages (from-to)1027-1030
Number of pages4
JournalGeophysical Research Letters
Issue number10
StatePublished - Oct 1981

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)


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