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The travel times of the longitudinal waves of the Logan and Blanca atomic explosions and their velocities in the upper mantle

KASTELSVEJ 26COPENHAGEN, Denmark

Abstract

The P travel times of the Logan and Blanca atomic explosions are found to be consistent with an upper mantile structure having a discontinuity surface at about 215 km depth at which the velocity and the velocity gradient increase abruptly while the velocity varies only slightly or is constant above this depth.

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