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Published May 1938 | Published
Journal Article Open

P′ and the Earth's Core


The velocity of longitudinal seismic waves in the Earth increases with depth down to the discontinuity separating mantle and core, at a depth of about 2900 km., where it drops from 13.7 to about 8 km./sec. Within the core, the velocity has usually been calculated as increasing gradually to about 11.5 km./sec. at the centre.

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© 1938 The Royal Astronomical Society. Received: 10 March 1938; Published: 01 May 1938.

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August 19, 2023
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