Seismic tomogram of the earth's mantle - Geodynamic implications

Details Seismic tomogram of the earth's mantle - Geodynamic implications Seismic tomogram of the earth's mantle - Geodynamic implications

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sci...258..625f&link_type=abstract

Science (ISSN 0036-8075), vol. 258, no. 5082, p. 625-630.

Physics

Condensed Matter

Materials Science

25

Convection, Geodynamics, Seismology, Tomography, Upwelling Water, Ocean Bottom, Olivine, Pacific Ocean, Poseidon Satellite

Scientific paper

Seismic tomography studies of the terrestrial mantle reveal a pattern of mantle convection involving upwelling columnar plumes in the Pacific and Africa, as well as circum-Pacific downwelling planar sheets. Extensive upwelling occurs in the south Pacific, and downwelling in the west Pacific. Attention is given to a high resolution image of plate subduction gathered from dense seismic networks surrounding Japan; these networks offer unique capabilities for resolving the internal structure of a large convection system's downwelling current. Chemistry/Food Science, general Engineering, general Materials Science
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