Multi-regional observations and validation of the M3 ocean tide.
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| Title: | Multi-regional observations and validation of the M |
|---|---|
| Authors: | Devlin, Adam Thomas1,2,3,4 (AUTHOR), Pan, Jiayi1,4,5 (AUTHOR) panj@cuhk.edu.hk, Idier, Déborah6 (AUTHOR) |
| Source: | SCIENCE CHINA Earth Sciences. Oct2023, Vol. 66 Issue 10, p2265-2277. 13p. |
| Subjects: | Sea level, Coasts, Resonance effect, Observations of the Moon, Geodesy, Acoustic emission testing |
| Abstract: | Improved determinations of the oft-ignored third-degree ocean tides can yield better accuracy for tidal predictions, numerical model solutions, and geodesy. While only a small part of tidal range, these components can be larger at certain coastal locations due to shelf resonances and other effects. Here, we discuss observations of the M3 lunar terdiurnal tide using 9-year windowed tidal harmonic analyses at 157 tide gauges compares to a global assimilation model (TPXO9v5a), with a focus on the Western Pacific and the European Shelf. TPXO9v5a does well in estimating the observed M3 amplitudes and phase lags in most regions, though determinations in coastal zones and in morphologically complex areas are coarse and often inaccurate. We also employ a shallow-water model (MARS) on the European Shelf, which can yield localized improvement over TPXO. In five subregions of the European Shelf, regional root-mean-squared-errors (RMSEs) are lower (and thus a better fit) at three locations for TPXO for amplitudes, and three for phase lags, with MARS simulations being a better fit in the other subregions. We also show that some locations have experienced significant long-term increases and/or decreases in the M3 amplitude over time, likely related to resonance changes under sea level rise (SLR) which can modulate the oceanic response to astronomical forcing. This hypothesis is explored for Europe using the MARS model by applying various sea level rise scenarios, showing that the directionality (positive or negative) of the long-term changes in M3 amplitudes over time match the model results for more than half of our validation stations. [ABSTRACT FROM AUTHOR] |
| Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Multi-regional observations and validation of the M<subscript>3</subscript> ocean tide. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Devlin%2C+Adam+Thomas%22">Devlin, Adam Thomas</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Jiayi%22">Pan, Jiayi</searchLink><relatesTo>1,4,5</relatesTo> (AUTHOR)<i> panj@cuhk.edu.hk</i><br /><searchLink fieldCode="AR" term="%22Idier%2C+Déborah%22">Idier, Déborah</searchLink><relatesTo>6</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22SCIENCE+CHINA+Earth+Sciences%22">SCIENCE CHINA Earth Sciences</searchLink>. Oct2023, Vol. 66 Issue 10, p2265-2277. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sea+level%22">Sea level</searchLink><br /><searchLink fieldCode="DE" term="%22Coasts%22">Coasts</searchLink><br /><searchLink fieldCode="DE" term="%22Resonance+effect%22">Resonance effect</searchLink><br /><searchLink fieldCode="DE" term="%22Observations+of+the+Moon%22">Observations of the Moon</searchLink><br /><searchLink fieldCode="DE" term="%22Geodesy%22">Geodesy</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+emission+testing%22">Acoustic emission testing</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Improved determinations of the oft-ignored third-degree ocean tides can yield better accuracy for tidal predictions, numerical model solutions, and geodesy. While only a small part of tidal range, these components can be larger at certain coastal locations due to shelf resonances and other effects. Here, we discuss observations of the M3 lunar terdiurnal tide using 9-year windowed tidal harmonic analyses at 157 tide gauges compares to a global assimilation model (TPXO9v5a), with a focus on the Western Pacific and the European Shelf. TPXO9v5a does well in estimating the observed M3 amplitudes and phase lags in most regions, though determinations in coastal zones and in morphologically complex areas are coarse and often inaccurate. We also employ a shallow-water model (MARS) on the European Shelf, which can yield localized improvement over TPXO. In five subregions of the European Shelf, regional root-mean-squared-errors (RMSEs) are lower (and thus a better fit) at three locations for TPXO for amplitudes, and three for phase lags, with MARS simulations being a better fit in the other subregions. We also show that some locations have experienced significant long-term increases and/or decreases in the M3 amplitude over time, likely related to resonance changes under sea level rise (SLR) which can modulate the oceanic response to astronomical forcing. This hypothesis is explored for Europe using the MARS model by applying various sea level rise scenarios, showing that the directionality (positive or negative) of the long-term changes in M3 amplitudes over time match the model results for more than half of our validation stations. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11430-022-1151-0 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 2265 Subjects: – SubjectFull: Sea level Type: general – SubjectFull: Coasts Type: general – SubjectFull: Resonance effect Type: general – SubjectFull: Observations of the Moon Type: general – SubjectFull: Geodesy Type: general – SubjectFull: Acoustic emission testing Type: general Titles: – TitleFull: Multi-regional observations and validation of the M3 ocean tide. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Devlin, Adam Thomas – PersonEntity: Name: NameFull: Pan, Jiayi – PersonEntity: Name: NameFull: Idier, Déborah IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 16747313 Numbering: – Type: volume Value: 66 – Type: issue Value: 10 Titles: – TitleFull: SCIENCE CHINA Earth Sciences Type: main |
| ResultId | 1 |
