| Description | Curves of diurnal inequality waves made from information at four numbered locations: 1. Portmagee, County Kerry. 2. Dookeeghan, County Mayo. 3. Sligo, County Sligo. 4. Ballyness, County Donegal. Records made over a two day period, 9.00am on day 1, to 4.30am on day 2, and expressed as a graph.
This data was used in the paper 'Researches on the tides. Eighth series. On the progress of the diurnal inequality wave along the coasts of Europe', by William Whewell, Philosophical Transactions of the Royal Society, v.127 (1837), pp.227-244. In the text, Whewell notes that: 'I resolved therefore to attempt to trace the progress of the wave which brings the diurnal inequality on some of the coasts on which simultaneous observations were made at my request in June 1835...In the present memoir I have selected the best-conditoned and most carefully made observations out of the general mass of those made in June 1835. I have had the curves of high and low water drawn for seventy-one such places...These calculations and diagrams have been perfomed by Mr. D.Ross of the Admiralty...'
Headed [p.1]: '1835. Diurnal [Inequalitiy - deleted] Wave June'. |