Seasonal resonance of diurnal coastal trapped waves in the southern Weddell Sea, Antarctica

Semper, Stefanie; Darelius, Elin

doi:https://doi.org/10.5194/os-13-77-2017

Articles | Volume 13, issue 1

https://doi.org/10.5194/os-13-77-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/os-13-77-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 1

Research article

|

30 Jan 2017

Research article |

| 30 Jan 2017

Seasonal resonance of diurnal coastal trapped waves in the southern Weddell Sea, Antarctica

Stefanie Semper and Elin Darelius

Data sets

Physical oceanography from mooring SB, SC, SD and SE in the Weddell Sea E. Darelius and I. Fer https://doi.org/10.1594/PANGAEA.870518

Physical oceanography and current meter data from mooring F1 E. Fahrbach, R. A. Woodgate, and G. Rohardt https://doi.org/10.1594/PANGAEA.792882

Physical oceanography and current meter data from mooring F2 E. Fahrbach, R. A. Woodgate, and G. Rohardt https://doi.org/10.1594/PANGAEA.792883

Physical oceanography and current meter data from mooring F3 E. Fahrbach, R. A. Woodgate, and G. Rohardt https://doi.org/10.1594/PANGAEA.792884

Physical oceanography and current meter data from mooring F4 E. Fahrbach, R. A. Woodgate, and G. Rohardt https://doi.org/10.1594/PANGAEA.792885

Moored measurements of current, temperature and salinity in the southern Weddell Sea, January 2009-January 2010 I. Fer https://doi.org/10.1594/PANGAEA.869799

Ocean current, temperature and salinity measurements from moorings at the southern Weddell Sea continental slope, February 2010-February 2011 I. Fer https://doi.org/10.1594/PANGAEA.871146

Temperature and current measurements in the Weddell Sea at mooring site S3 A. Foldvik https://doi.org/10.1594/PANGAEA.870449

Temperature and current measurements in the Weddell Sea at mooring site C and S2 in 1977 A. Foldvik and T. Gammelsrød https://doi.org/10.1594/PANGAEA.869813

Temperature and current measurements in the Weddell Sea at mooring site D1, D2, S2-1985 and S2-1987 A. Foldvik}, T. Gammelsrød, and S. Østerhus, S. https://doi.org/10.1594/PANGAEA.869820

Temperature and current measurements in the Weddell Sea at mooring site A T. Kvinge https://doi.org/10.1594/PANGAEA.870436

Temperature and current measurements in the Weddell Sea at mooring site B1 and B2 in 1968 T. Kvinge and A. Foldvik https://doi.org/10.1594/PANGAEA.869804

Physical oceanography from CTD in the Weddell Sea, Antarctica, during the RRS Ernest Shackleton cruise ES033 K. W. Nicholls and I. Fer https://doi.org/10.1594/PANGAEA.854148

Temperature and current measurements in the Weddell Sea at mooring site Fr1 and Fr2 R. A. Woodgate, E. Fahrbach, M. Schr{\"o}der, G. Rohardt, and K. W. Nicholls https://doi.org/10.1594/PANGAEA.869905

Short summary

Velocity measurements from moorings at the shelf break in the southern Weddell Sea reveal strong diurnal tidal currents, which are enhanced by ca. 50 % in austral summer compared to winter. A numerical code describing coastal trapped waves (CTWs) is used to explore the effect of changing stratification and circulation on wave properties. It is found that near-resonance between CTWs and diurnal tides during austral summer can explain the observed enhancement of diurnal tidal currents.