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Bulletin of the Seismological Society of America; December 1972; v. 62; no. 6; p. 1543-1557
© 1972 Seismological Society of America
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Reaction of shallow onshore waters to ground shock

M. L. MERRITT

SANDIA LABORATORIES, ALBUQUERQUE, NEW MEXICO 87115

Abstract

Pressures and accelerations were measured in and near numerous ponds and lakes in Amchitka during the nuclear shot CANNIKIN, using peak measuring and full time-history recording instruments. The resulting pressures and accelerations were similar in wave shape: each showed an initial pulse, a period of free fall during spall, and an impact shock. It is found that when reverberation times in the water are short compared to rise times and other characteristic times of the ground shock, the water responds as a whole, and the pressure in it is proportional to the acceleration. When reverberation times are longer than rise times, pressure overshoots and oscillates about the simple proportionality.






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