Long-term changes in the ocean tide at Port Louis, Falkland Islands

The historic tide gauge measurements at Port Louis in the Falkland Islands made by James Clark Ross in 1842 have been used to see whether there have been long-term changes in the ocean tide at that location. The conclusion is that there is no evidence for any significant change, which contrasts with tide gauge findings from other parts of the world over similar timescales. As by-products, the study has also been instructive in providing an example of how to obtain accurate tidal information from tabulations of high and low waters and from short tide gauge records.