Articles | Volume 17, issue 3
https://doi.org/10.5194/os-17-809-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-17-809-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Preface: Developments in the science and history of tides
National Oceanography Centre, Joseph Proudman Building, 6 Brownlow
Street, Liverpool, L3 5DA, UK
J. A. Mattias Green
School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59
5AB, UK
Richard D. Ray
Geodesy and Geophysics Laboratory, NASA Goddard Space Flight Center,
Greenbelt, MD, USA
John M. Huthnance
National Oceanography Centre, Joseph Proudman Building, 6 Brownlow
Street, Liverpool, L3 5DA, UK
Related authors
Philip L. Woodworth
Ocean Sci., 20, 887–894, https://doi.org/10.5194/os-20-887-2024, https://doi.org/10.5194/os-20-887-2024, 2024
Short summary
Short summary
This paper makes use of historic tide gauge measurements at Port Louis in the Falkland Islands made by James Clark Ross in 1842 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.
Philip L. Woodworth and John M. Vassie
Earth Syst. Sci. Data, 14, 4387–4396, https://doi.org/10.5194/essd-14-4387-2022, https://doi.org/10.5194/essd-14-4387-2022, 2022
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An electronic data set of tidal measurements at St. Helena in 1761 by Nevil Maskelyne is described. These data were first analysed by Cartwright in papers on changing tides, but his data files were never archived. The now newly digitised Maskelyne data have been reanalysed in order to obtain an updated impression of whether the tide has changed at that location in over two and a half centuries. Our main conclusion is that the major tidal constituent (M2) has changed little.
David T. Pugh, Edmund Bridge, Robin Edwards, Peter Hogarth, Guy Westbrook, Philip L. Woodworth, and Gerard D. McCarthy
Ocean Sci., 17, 1623–1637, https://doi.org/10.5194/os-17-1623-2021, https://doi.org/10.5194/os-17-1623-2021, 2021
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Observations of sea level, taken manually by reading a tide pole, were carefully taken at a number of locations around Ireland in 1842 as part of the first land survey of Ireland. Our study investigates how useful this type of sea level observation is for understanding mean sea level and tidal change. We find that when carefully adjusted for seasonal, meteorological, and astronomical factors, these data can provide important insights into changing sea levels.
Philip L. Woodworth
Hist. Geo Space. Sci., 11, 15–29, https://doi.org/10.5194/hgss-11-15-2020, https://doi.org/10.5194/hgss-11-15-2020, 2020
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The Liverpool Tidal Institute's (LTI) 100th anniversary was in 2019, and it acquired a reputation using tide prediction machines (TPMs). We describe the principles of a TPM, how many were made and Doodson's method to determine harmonic constants from tidal data to predict the tides. Although only three TPMs were used at the LTI, Doodson oversaw the design and manufacture of several others. We show how the UK, and Doodson particularly, played a central role in this area of science.
Denise Smythe-Wright, W. John Gould, Trevor J. McDougall, Stefania Sparnocchia, and Philip L. Woodworth
Hist. Geo Space. Sci., 10, 137–150, https://doi.org/10.5194/hgss-10-137-2019, https://doi.org/10.5194/hgss-10-137-2019, 2019
Short summary
Short summary
From the early work of Prince Albert I of Monaco, the first president of the International Association for the Physical Sciences of the Oceans, to today, the Association has promoted and supported international research and cross-cutting activities in ocean sciences, building on the work of the many far-sighted scientists who, over the last century, have addressed seemingly intractable problems. This paper describes key events in IAPSO's history and the roles played by the scientists involved.
Philip L. Woodworth
Ocean Sci., 15, 431–442, https://doi.org/10.5194/os-15-431-2019, https://doi.org/10.5194/os-15-431-2019, 2019
Short summary
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This is the first investigation of the worldwide distribution of the degree-3 M1 ocean tide using over 800 tide gauge records and a global tide model. M1 is confirmed to have a geographical variation in the Atlantic and other basins consistent with the suggestion of Platzman and Cartwright that M1 is generated through the spatial and temporal overlap of M1 in the tidal potential and one (or at least a small number of) diurnal ocean normal mode(s).
Philip L. Woodworth and Angela Hibbert
Ocean Sci., 14, 711–730, https://doi.org/10.5194/os-14-711-2018, https://doi.org/10.5194/os-14-711-2018, 2018
Short summary
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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.
Philip L. Woodworth and Glen H. Rowe
Hist. Geo Space. Sci., 9, 85–103, https://doi.org/10.5194/hgss-9-85-2018, https://doi.org/10.5194/hgss-9-85-2018, 2018
Short summary
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This paper discusses the quality of James Cook’s tidal measurements during the voyage of the Endeavour. We conclude that his measurements were accurate in general to about 0.5 ft in height and 30 min in time. They were good enough (or unique enough) to be included in global compilations of tidal information in the 18th century and were used in the 19th century in the construction of the first worldwide tidal atlases. They support Cook’s reputation as a good observer of the environment.
David E. Cartwright, Philip L. Woodworth, and Richard D. Ray
Hist. Geo Space. Sci., 8, 9–19, https://doi.org/10.5194/hgss-8-9-2017, https://doi.org/10.5194/hgss-8-9-2017, 2017
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.
Brad Reed, J. A. Mattias Green, Adrian Jenkins, and G. Hilmar Gudmundsson
The Cryosphere, 18, 4567–4587, https://doi.org/10.5194/tc-18-4567-2024, https://doi.org/10.5194/tc-18-4567-2024, 2024
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We use a numerical ice-flow model to simulate the response of a 1940s Pine Island Glacier to changes in melting beneath its ice shelf. A decadal period of warm forcing is sufficient to push the glacier into an unstable, irreversible retreat from its long-term position on a subglacial ridge to an upstream ice plain. This retreat can only be stopped when unrealistic cold forcing is applied. These results show that short warm anomalies can lead to quick and substantial increases in ice flux.
Philip L. Woodworth
Ocean Sci., 20, 887–894, https://doi.org/10.5194/os-20-887-2024, https://doi.org/10.5194/os-20-887-2024, 2024
Short summary
Short summary
This paper makes use of historic tide gauge measurements at Port Louis in the Falkland Islands made by James Clark Ross in 1842 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.
Philip L. Woodworth and John M. Vassie
Earth Syst. Sci. Data, 14, 4387–4396, https://doi.org/10.5194/essd-14-4387-2022, https://doi.org/10.5194/essd-14-4387-2022, 2022
Short summary
Short summary
An electronic data set of tidal measurements at St. Helena in 1761 by Nevil Maskelyne is described. These data were first analysed by Cartwright in papers on changing tides, but his data files were never archived. The now newly digitised Maskelyne data have been reanalysed in order to obtain an updated impression of whether the tide has changed at that location in over two and a half centuries. Our main conclusion is that the major tidal constituent (M2) has changed little.
Richard D. Ray
Ocean Sci., 18, 1073–1079, https://doi.org/10.5194/os-18-1073-2022, https://doi.org/10.5194/os-18-1073-2022, 2022
Short summary
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Seasonal variability of the M2 ocean tide can be detected at many ports. The physical mechanisms underlying seasonality, in the broadest terms, are astronomical, frictional–advective interactions, and climate processes. Some of these induce annual modulations, some semiannual, in amplitude, phase, or both. This note reviews how this occurs and gives an example from each broad category. Phase conventions and their relationship with causal mechanisms, as well as nomenclature, are also addressed.
David T. Pugh, Edmund Bridge, Robin Edwards, Peter Hogarth, Guy Westbrook, Philip L. Woodworth, and Gerard D. McCarthy
Ocean Sci., 17, 1623–1637, https://doi.org/10.5194/os-17-1623-2021, https://doi.org/10.5194/os-17-1623-2021, 2021
Short summary
Short summary
Observations of sea level, taken manually by reading a tide pole, were carefully taken at a number of locations around Ireland in 1842 as part of the first land survey of Ireland. Our study investigates how useful this type of sea level observation is for understanding mean sea level and tidal change. We find that when carefully adjusted for seasonal, meteorological, and astronomical factors, these data can provide important insights into changing sea levels.
Julia Rulent, Lucy M. Bricheno, J. A. Mattias Green, Ivan D. Haigh, and Huw Lewis
Nat. Hazards Earth Syst. Sci., 21, 3339–3351, https://doi.org/10.5194/nhess-21-3339-2021, https://doi.org/10.5194/nhess-21-3339-2021, 2021
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High coastal total water levels (TWLs) can lead to flooding and hazardous conditions for coastal communities and environment. In this research we are using numerical models to study the interactions between the three main components of the TWL (waves, tides, and surges) on UK and Irish coasts during winter 2013/14. The main finding of this research is that extreme waves and surges can indeed happen together, even at high tide, but they often occurred simultaneously 2–3 h before high tide.
Loren Carrere, Brian K. Arbic, Brian Dushaw, Gary Egbert, Svetlana Erofeeva, Florent Lyard, Richard D. Ray, Clément Ubelmann, Edward Zaron, Zhongxiang Zhao, Jay F. Shriver, Maarten Cornelis Buijsman, and Nicolas Picot
Ocean Sci., 17, 147–180, https://doi.org/10.5194/os-17-147-2021, https://doi.org/10.5194/os-17-147-2021, 2021
Short summary
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Internal tides can have a signature of several centimeters at the ocean surface and need to be corrected from altimeter measurements. We present a detailed validation of several internal-tide models using existing satellite altimeter databases. The analysis focuses on the main diurnal and semidiurnal tidal constituents. Results show the interest of the methodology proposed, the quality of the internal-tide models tested and their positive contribution for estimating an accurate sea level.
J. A. Mattias Green and David T. Pugh
Ocean Sci., 16, 1337–1345, https://doi.org/10.5194/os-16-1337-2020, https://doi.org/10.5194/os-16-1337-2020, 2020
Short summary
Short summary
Bardsey Island lies 3 km offshore the western end of the Llŷn Peninsula in northwestern Wales. However, the island is too small to show up in tidal databases based on satellite data, and thus they may not provide the correct local tides. Our new sea level data shows that the tidal currents in the satellite databases are one-third of the observed currents. Any investigation of other coastal activities, e.g. renewable energy installations, must use local observations to get the correct tides.
Marie Laugié, Yannick Donnadieu, Jean-Baptiste Ladant, J. A. Mattias Green, Laurent Bopp, and François Raisson
Clim. Past, 16, 953–971, https://doi.org/10.5194/cp-16-953-2020, https://doi.org/10.5194/cp-16-953-2020, 2020
Short summary
Short summary
To quantify the impact of major climate forcings on the Cretaceous climate, we use Earth system modelling to progressively reconstruct the Cretaceous state by changing boundary conditions one by one. Between the preindustrial and the Cretaceous simulations, the model simulates a global warming of more than 11°C. The study confirms the primary control exerted by atmospheric CO2 on atmospheric temperatures. Palaeogeographic changes represent the second major contributor to the warming.
Philip L. Woodworth
Hist. Geo Space. Sci., 11, 15–29, https://doi.org/10.5194/hgss-11-15-2020, https://doi.org/10.5194/hgss-11-15-2020, 2020
Short summary
Short summary
The Liverpool Tidal Institute's (LTI) 100th anniversary was in 2019, and it acquired a reputation using tide prediction machines (TPMs). We describe the principles of a TPM, how many were made and Doodson's method to determine harmonic constants from tidal data to predict the tides. Although only three TPMs were used at the LTI, Doodson oversaw the design and manufacture of several others. We show how the UK, and Doodson particularly, played a central role in this area of science.
Hannah S. Davies, J. A. Mattias Green, and Joao C. Duarte
Earth Syst. Dynam., 11, 291–299, https://doi.org/10.5194/esd-11-291-2020, https://doi.org/10.5194/esd-11-291-2020, 2020
Short summary
Short summary
We have confirmed that there is a supertidal cycle associated with the supercontinent cycle. As continents drift due to plate tectonics, oceans also change size, controlling the strength of the tides and causing periods of supertides. In this work, we used a coupled tectonic–tidal model of Earth's future to test four different scenarios that undergo different styles of ocean closure and periods of supertides. This has implications for the Earth system and for other planets with liquid oceans.
Denise Smythe-Wright, W. John Gould, Trevor J. McDougall, Stefania Sparnocchia, and Philip L. Woodworth
Hist. Geo Space. Sci., 10, 137–150, https://doi.org/10.5194/hgss-10-137-2019, https://doi.org/10.5194/hgss-10-137-2019, 2019
Short summary
Short summary
From the early work of Prince Albert I of Monaco, the first president of the International Association for the Physical Sciences of the Oceans, to today, the Association has promoted and supported international research and cross-cutting activities in ocean sciences, building on the work of the many far-sighted scientists who, over the last century, have addressed seemingly intractable problems. This paper describes key events in IAPSO's history and the roles played by the scientists involved.
Philip L. Woodworth
Ocean Sci., 15, 431–442, https://doi.org/10.5194/os-15-431-2019, https://doi.org/10.5194/os-15-431-2019, 2019
Short summary
Short summary
This is the first investigation of the worldwide distribution of the degree-3 M1 ocean tide using over 800 tide gauge records and a global tide model. M1 is confirmed to have a geographical variation in the Atlantic and other basins consistent with the suggestion of Platzman and Cartwright that M1 is generated through the spatial and temporal overlap of M1 in the tidal potential and one (or at least a small number of) diurnal ocean normal mode(s).
Alexander Harker, J. A. Mattias Green, Michael Schindelegger, and Sophie-Berenice Wilmes
Ocean Sci., 15, 147–159, https://doi.org/10.5194/os-15-147-2019, https://doi.org/10.5194/os-15-147-2019, 2019
Short summary
Short summary
We used a computer model to help predict how changing sea levels around Australia will affect the ebb and flow of the tide. We found that sea-level rise and coastal flooding affect where energy from the tide is dissipated and how the tide flows around the coastline. We found that we must consider how sea-level rise will affect tides across the rest of the world, as that will have an impact on Australia too. This sort of investigation can help direct coastal management and protection efforts.
Philip L. Woodworth and Angela Hibbert
Ocean Sci., 14, 711–730, https://doi.org/10.5194/os-14-711-2018, https://doi.org/10.5194/os-14-711-2018, 2018
Short summary
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.
J. A. Mattias Green, David G. Bowers, and Hannah A. M. Byrne
Ocean Sci. Discuss., https://doi.org/10.5194/os-2018-72, https://doi.org/10.5194/os-2018-72, 2018
Preprint withdrawn
Short summary
Short summary
In a double tide the ocean reaches high or low tide, starts to fall or rise, only to go back to a new high or low. Here, we describe three ways this can happen by dividing locations with observed double tides into three classes. This showed that double tides are more common than we thought, and more complicated than most textbooks claim because they only describe one class of double tides. This matters to shipping, coastal flood management, and other disciplines interested in sea-level change.
Philip L. Woodworth and Glen H. Rowe
Hist. Geo Space. Sci., 9, 85–103, https://doi.org/10.5194/hgss-9-85-2018, https://doi.org/10.5194/hgss-9-85-2018, 2018
Short summary
Short summary
This paper discusses the quality of James Cook’s tidal measurements during the voyage of the Endeavour. We conclude that his measurements were accurate in general to about 0.5 ft in height and 30 min in time. They were good enough (or unique enough) to be included in global compilations of tidal information in the 18th century and were used in the 19th century in the construction of the first worldwide tidal atlases. They support Cook’s reputation as a good observer of the environment.
Hannah A. M. Byrne, J. A. Mattias Green, and David G. Bowers
Ocean Sci., 13, 599–607, https://doi.org/10.5194/os-13-599-2017, https://doi.org/10.5194/os-13-599-2017, 2017
Short summary
Short summary
Some places experience double high tides, where the tide starts to ebb for a short while, only to briefly flood again before finally receding. The result is a very long high tide with weak currents, and is important for navigational purposes. The existing theory for when and where double high tides occur does not always capture them, and it can only be applied to double highs occurring on a twice-daily tide. Here, the criterion has been generalized to capture all double high or low tides.
David E. Cartwright, Philip L. Woodworth, and Richard D. Ray
Hist. Geo Space. Sci., 8, 9–19, https://doi.org/10.5194/hgss-8-9-2017, https://doi.org/10.5194/hgss-8-9-2017, 2017
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.
Lionel Zawadzki, Michaël Ablain, Loren Carrere, Richard D. Ray, Nikita P. Zelensky, Florent Lyard, Amandine Guillot, and Nicolas Picot
Ocean Sci. Discuss., https://doi.org/10.5194/os-2016-19, https://doi.org/10.5194/os-2016-19, 2016
Preprint withdrawn
Short summary
Short summary
Mean sea level (MSL) is a prominent indicator of climatic change, and is therefore of great scientific and societal interest. Since the beginning of the altimeter mission TOPEX/Poseidon and its successors Jason-1 and Jason-2, MSL products became essential for climate applications. Since 1995, a suspicious signal is apparent in the corresponding MSL record. Since 2010, scientific teams have been working on reducing this error. This paper assesses, characterizes and quantifies this reduction.
S. H. R. Rosier, G. H. Gudmundsson, and J. A. M. Green
The Cryosphere, 9, 1649–1661, https://doi.org/10.5194/tc-9-1649-2015, https://doi.org/10.5194/tc-9-1649-2015, 2015
Short summary
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We use a full-Stokes model to investigate the long period modulation of Rutford Ice Stream flow by the ocean tide. We find that using a nonlinear sliding law cannot fully explain the measurements and an additional mechanism, whereby tidally induced subglacial pressure variations are transmitted upstream from the grounding line, is also required to match the large amplitude and decay length scale of the observations.
S. H. R. Rosier, G. H. Gudmundsson, and J. A. M. Green
The Cryosphere, 8, 1763–1775, https://doi.org/10.5194/tc-8-1763-2014, https://doi.org/10.5194/tc-8-1763-2014, 2014
N. Herold, J. Buzan, M. Seton, A. Goldner, J. A. M. Green, R. D. Müller, P. Markwick, and M. Huber
Geosci. Model Dev., 7, 2077–2090, https://doi.org/10.5194/gmd-7-2077-2014, https://doi.org/10.5194/gmd-7-2077-2014, 2014
F. Wobus, G. I. Shapiro, J. M. Huthnance, M. A. M. Maqueda, and Y. Aksenov
Ocean Sci., 9, 885–899, https://doi.org/10.5194/os-9-885-2013, https://doi.org/10.5194/os-9-885-2013, 2013
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Short summary
This special issue marks the 100th anniversary of the founding of the Liverpool Tidal Institute (LTI). The preface gives a history of the LTI founding and of its first two directors. It also gives an overview of LTI research on tides. Summaries are given of the 26 papers in the special issue. Their topics could be thought of as providing a continuation of the research first undertaken at the LTI. They provide an interesting snapshot of work on tides now being made by groups around the world.
This special issue marks the 100th anniversary of the founding of the Liverpool Tidal Institute...