Articles | Volume 8, issue 1
Review article
27 Mar 2017
Review article |  | 27 Mar 2017

Manuel Johnson's tide record at St. Helena

David E. Cartwright, Philip L. Woodworth, and Richard D. Ray

Related authors

Long-term changes in the ocean tide at Port Louis, Falkland Islands
Philip L. Woodworth
Ocean Sci., 20, 887–894,,, 2024
Short summary
Reanalyses of Maskelyne's tidal data at St. Helena in 1761
Philip L. Woodworth and John M. Vassie
Earth Syst. Sci. Data, 14, 4387–4396,,, 2022
Short summary
Technical note: On seasonal variability of the M2 tide
Richard D. Ray
Ocean Sci., 18, 1073–1079,,, 2022
Short summary
Mean sea level and tidal change in Ireland since 1842: a case study of Cork
David T. Pugh, Edmund Bridge, Robin Edwards, Peter Hogarth, Guy Westbrook, Philip L. Woodworth, and Gerard D. McCarthy
Ocean Sci., 17, 1623–1637,,, 2021
Short summary
Preface: Developments in the science and history of tides
Philip L. Woodworth, J. A. Mattias Green, Richard D. Ray, and John M. Huthnance
Ocean Sci., 17, 809–818,,, 2021
Short summary
Short summary
This paper discusses an historical record of the ocean tide made by the astronomer Manuel Johnson (a future President of the Royal Astronomical Society) at St. Helena in 1826–27. It describes how the measurements were made using a tide gauge of an unusual design, which recorded the heights of the high and low tides well, although information on their times were not so accurate. Johnson’s work is not well known. One objective of the present research was to make his measurements more accessible.