High-frequency Pn,Sn phases recorded by ocean bottom seismometers on the Cocos plate

Journal Article · Fri May 01 00:00:00 EDT 1981 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL008i005p00489· OSTI ID:6420707

McCreery, C S

Data from ocean bottom seismometers located on the Cocos plate indicate that high-frequency Pn,Sn phases are generated by earthquakes along the subducting margin of that plate and are propagated across the plate. The Sn phase appears to be severely attenuated as it approaches the ridge crest. Estimates of Pn velocity are lower than previous extimates for western Pacific paths, which may indicate a relationship between Pn,Sn velocity and lithospheric age. High frequencies found in these phases suggest that Q for Pn,Sn propagation across the Cocos plate is similar to that for the western Pacific.

• Research Organization: Hawaii Institute of Geophysics, University of Hawaii, Honolulu 96822
• OSTI ID: 6420707
• Journal Information: Geophys. Res. Lett.; (United States), Vol. 8:5
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
OCEANIC CRUST
SEISMIC WAVES
PACIFIC OCEAN
EARTHQUAKES
PLATE TECTONICS
WAVE PROPAGATION
ATTENUATION
SEA BED
SEA-FLOOR SPREADING
SEISMOLOGY
EARTH CRUST
SEAS
SEISMIC EVENTS
SURFACE WATERS
TECTONICS
580201* - Geophysics- Seismology & Tectonics- (1980-1989)