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The effect of a rough core-mantle boundary on PKKP

By D.J. Doornbos


Scattering by a slightly-rough core—mantle boundary (CMB) with small-scale radial variations of up to a few\ud hundred metres, has been an attractive (though non-unique) interpretation of at least part of the precursors to\ud PKLKP. Here it is shown that a slightly-rough CMB has an observable effect on PKKP as well, if the signal-to-noise\ud ratio is sufficiently high. Both large- and small-scaletopography must be dynamically produced, if current estimates of\ud the viscosity of the lower mantle (_~10²² Poise) are correct

Topics: Aardwetenschappen
Year: 1980
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