Spectral analyses of high-frequency Pn,Sn phases recorded on ocean bottom seismographs

Spectral analyses of high-frequency Pn,Sn phases recorded on ocean bottom seismographs

Spectrograms of high‐frequency Pn,Sn phases recorded on ocean bottom seismographs contain frequencies in Pn and Sn wavetrains as high as 10 Hz and 7 Hz, respectively, at distances in excess of 3700 km. These and other observations confirm earlier evidence for remarkable efficiencies of Pn and Sn pro...

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Veröffentlicht in:Geophysical research letters 1978-09, Vol.5 (9), p.745-747
Hauptverfasser: Sutton, George H., McCreery, Charles S., Duennebier, Frederick K., Walker, Daniel A.
Format: Artikel
Sprache:eng
Schlagworte:
Geophysics
Marine
Ocean bottom
Phases
Seismographs
Spectra
Spectrograms
Tin
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Zusammenfassung:Spectrograms of high‐frequency Pn,Sn phases recorded on ocean bottom seismographs contain frequencies in Pn and Sn wavetrains as high as 10 Hz and 7 Hz, respectively, at distances in excess of 3700 km. These and other observations confirm earlier evidence for remarkable efficiencies of Pn and Sn propagation, with Sn often more efficient (higher apparent Q) than Pn.
ISSN:0094-8276
1944-8007
DOI:10.1029/GL005i009p00745