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Deep-Sea Tides 1250 Kilometers off Baja California

Jean Filloux
Science
New Series, Vol. 169, No. 3948 (Aug. 28, 1970), pp. 862-864
Stable URL: http://www.jstor.org/stable/1729736
Page Count: 3
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Deep-Sea Tides 1250 Kilometers off Baja California
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Abstract

The tidal pressure fluctuations on the sea floor were read by a sensitive optical sensor that detects the rotations of a multiturn Bourdon helix. The record was analyzed in terms of the transfer functions between tidal elevations and gravitational driving. Off California, the semidiurnal tide attenuates considerably faster than the diurnal tide. Neither species satisfies the rate of decay expected from a Kelvin wave.

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