Abstract
Recent overtone data suggest that the Earth's inner core is soft with a shear velocity (β1) in the range 2 to 4 km s−1. A search for PKJKP corresponding to shear velocities in this range reveals five events consistent with β1 = 2.95 ± 0.1 km s−1.
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JULIAN, B., DAVIES, D. & SHEPPARD, R. PKJKP. Nature 235, 317–318 (1972). https://doi.org/10.1038/235317a0
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DOI: https://doi.org/10.1038/235317a0
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