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seismic tomography |
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seismic tomography [′sīz‚mik tō′mäg·rə·fē] (geophysics) The estimation of seismic wave velocities throughout a region of interest from the travel times of either transmitted or reflected waves, generally through numerical models and iterative procedures. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| In the past, pictures from seismic tomography were too fuzzy to reveal relatively thin features like subducting layers of ocean floor. The combined power of the 128 PA-8500 processors provide the computational resources necessary for increasingly realistic simulation of scientific phenomena and engineering systems, such as deciphering the history of the earth's mantle convection from seismic tomography. VanDecar, James, and their South American colleagues performed seismic tomography - a technique akin to the medical computerized axial tomography, or CAT scan - using earthquake waves recorded at sites in Brazil. |
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