@article{fdi:010082206,
  title = {{I}nfluence of winds, geostrophy and typhoons on the seasonal variability of the circulation in the {G}ulf of {T}onkin : a high-resolution 3{D} regional modeling study},
  author = {{P}iton, {V}. and {H}errmann, {M}arine and {M}arsaleix, {P}. and {D}uhaut, {T}. and {N}goc, {T}. {B}. and {T}ran, {M}. {C}. and {S}hearman, {K}. and {O}uillon, {S}ylvain},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he present study explores the seasonal variability of the circulation in the {G}ulf of {T}onkin ({G}o{T}) and associated water fluxes, and identifies the driving physical processes of this circulation. {W}e use a 9 year (2009-2017) high-resolution numerical simulation. {I}t is evaluated with historical hydrographic data, sea level data, high-frequency radar data and satellite products. {O}ur results reveal a summer anticyclonic surface circulation and a winter cyclonic surface circulation, with a seasonal reversal of the circulation in the {H}ainan {S}trait (eastward in summer and westward in winter). {I}n winter, a strong (similar to 0.4 m s(-1)) downcoast current developing in the western {G}o{T} is responsible for most of the water export out of the {G}o{T}. {EOF} analyses reveal that ageostrophic currents (wind-driven currents) mainly drive the seasonal variability of the surface circulation in the {G}o{T}. {T}he downcoast current is however both wind and density (geostrophy) driven. {O}ur results further show the strong influence of typhoons. {T}hey can significantly modulate the seasonal circulation in the {G}o{T} by reversing the summer circulation and intensifying the winter circulation. {F}inally, it is shown that during few days of their passage, typhoon can generate a total water flux up to 4 times higher than the monthly climatological flux.},
  keywords = {{S}easonal circulation ; {W}ater flux ; {T}yphoon ; {C}oastal current ; {O}cean regional circulation model ; {G}ulf of {T}onkin ; {CHINE} {MER} ; {TONKIN} {GOLFE} ; {FLEUVE} {ROUGE}},
  booktitle = {},
  journal = {{R}egional {S}tudies in {M}arine {S}cience},
  volume = {45},
  numero = {},
  pages = {101849 [17 p.]},
  ISSN = {2352-4855},
  year = {2021},
  DOI = {10.1016/j.rsma.2021.101849},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082206},
}