Abstract
Synopsis. The model was constructed to horizontal and vertical scales of 1 : 5,280 and 1 : 115 respectively, and the bed was finished with a layer of cement-sand mortar. Tides were generated by a displacer, moved by mechanism designed on the principle of Lord Kelvin's tide-predicting machine to reproduce the spring/neap cycle. A hump developed on the curve of the rising spring tide in the model at the same level as that on the estuary-tide, becoming more pronounced as the wave advanced upstream. Reclamation of large areas of land on the model caused little increase in range at Glasgow. Observations taken immediately after stopping the motion of the displacer indicated that the natural period of the model was 4 hours—about one-third of the tidal period. Harmonic analysis of tide curves in the estuary showed that the amplitudes of all the harmonic components increased with distance from the estuary mouth, and that the rate of increase of the third harmonic component was greater than that of the second or fourth. The pronounced hump on the tide curve at Glasgow was caused by magnification of the third harmonic. Analysis indicated that the mean water-level at Glasgow was considerably above that at Gourock.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
