Teleseismic S wave microseisms

Kiwamu Nishida, Ryota Takagi

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)


Although observations of microseisms excited by ocean swells were firmly established in the 1940s, the source locations remain difficult to track. Delineation of the source locations and energy partition of the seismic wave components are key to understanding the excitation mechanisms. Using a seismic array in Japan, we observed both P and S wave microseisms excited by a severe distant storm in the Atlantic Ocean. Although nonlinear forcing of an ocean swell with a one-dimensional Earth model can explain P waves and vertically polarized S waves (SV waves), it cannot explain horizontally polarized S waves (SH waves).The precise source locations may provide a new catalog for exploring Earth's interior.

Original languageEnglish
Pages (from-to)919-921
Number of pages3
Issue number6302
Publication statusPublished - 2016 Aug 26


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