Regional modeling of internal-tide dynamics around New Caledonia – Part 1: Coherent internal-tide characteristics and sea surface height signature

Bendinger, Arne; Cravatte, Sophie; Gourdeau, Lionel; Brodeau, Laurent; Albert, Aurélie; Tchilibou, Michel; Lyard, Florent; Vic, Clément

doi:https://doi.org/10.5194/os-19-1315-2023

Articles | Volume 19, issue 4

https://doi.org/10.5194/os-19-1315-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-19-1315-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 4

Research article

|

29 Aug 2023

Research article |

| 29 Aug 2023

Regional modeling of internal-tide dynamics around New Caledonia – Part 1: Coherent internal-tide characteristics and sea surface height signature

Arne Bendinger, Sophie Cravatte, Lionel Gourdeau, Laurent Brodeau, Aurélie Albert, Michel Tchilibou, Florent Lyard, and Clément Vic

Data sets

Global estimates of internal tide generation rates at 1/30 degree resolution S. Falahat, J. Nycander, C. De Lavergne, F. Roquet, G. Madec, and C. Vic https://doi.org/10.17882/58153

Short summary

New Caledonia is a hot spot of internal-tide generation due to complex bathymetry. Regional modeling quantifies the coherent internal tide and shows that most energy is converted in shallow waters and on very steep slopes. The region is a challenge for observability of balanced dynamics due to strong internal-tide sea surface height (SSH) signatures at similar wavelengths. Correcting the SSH for the coherent internal tide may increase the observability of balanced motion to < 100 km.