Articles | Volume 14, issue 4
Ocean Sci., 14, 711–730, 2018
https://doi.org/10.5194/os-14-711-2018

Special issue: Developments in the science and history of tides (OS/ACP/HGSS/NPG/SE...

Ocean Sci., 14, 711–730, 2018
https://doi.org/10.5194/os-14-711-2018
Research article
26 Jul 2018
Research article | 26 Jul 2018

The nodal dependence of long-period ocean tides in the Drake Passage

Philip L. Woodworth and Angela Hibbert

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Short summary
30 years of BPR data at Drake Passage are used to investigate the Mf, Mm and Mt long-period tides. Amplitudes of Mf and Mt, and all phase lags, vary over the nodal cycle as in the equilibrium tide. Mm amplitude is almost constant, and so inconsistent at 3σ from anticipation due to energetic non-tidal variability. Most findings agree with a modern ocean tide model. BPR records are superior to conventional tide gauge data in this work due to lower proportion of non-tidal variability.