Other
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13..525t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 13, June 1986, p. 525-528.
Other
6
Communication Cables, Lunar Tides, Periodic Variations, Telecommunication, Amplitudes, Atlantic Ocean, Electric Potential, Power Spectra, Time Series Analysis
Scientific paper
The results of determinations of tidal periods from spectral analysis of the voltage induced across an unpowered length of the TAT-7 telecommunications cable in the North Atlantic Ocean over an approximately 19 day interval are reported. Particularly prominent spectral components are observed at several frequencies, including those identified as corresponding to the diurnal declination lunar-solar K1, semidiurnal principal solar S2, semidiurnal principal lunar M2, and monthly lunar M(m), components. In addition, a large amplitude spectral component of high statistical significance was observed at a frequency of 3.0051 cpd, approximately one-third the sideral day. This component does not appear to be related to the solar components S3 and possibly corresponds to a declination lunar-solar K3 frequency, although the amplitude is very much larger than that which might be expected. Other common lunar tides appear to be a minor component of the data. Such cable data can be used for studies and refinement on a global scale of large-scale tidal (ocean and ionosphere) models.
Lanzerotti Louis J.
Maclennan Carol G.
Medford L. V.
Meloni Antonio
Thomson David J.
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