Etude de la dynamique océanique de la mer des Salomon : modélisation numérique à haute résolution

Abstract : The Solomon Sea is a semi-closed sea located in the subtropical Pacific Ocean. It connects subtropical water masses to the equatorial one through the low latitude western boundary currents (LLWBCs) and could potentially modulate the tropical Pacific climate at decadal time-scales. This region is not well documented because of few available observations. One of the main objective of this study is to set up a high resolution realistic ocean model of the Solomon at 1/36° that will allow to resolve a broad range of scales, especially the mesoscale and partially the sub-mesoscale processes. The general circulation and the mesoscale and sub-mesoscale variabilities are studied. The representation of the high resolution circulation is consistent with the available observations and is better resolved than in previous coarser resolution models. The mesoscale variability in the high resolution model is strongly increased compared to that of previous models and is in a good agreement with the observations. SST, SSH and kinetic energy wavenumber spectra in the Solomon Sea show spectral slopes closed to the surface quasi-geostrophy SQG theory.
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Submitted on : Tuesday, September 30, 2014 - 12:07:10 PM
Last modification on : Thursday, January 3, 2019 - 4:30:09 PM
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  • HAL Id : tel-01069989, version 1




Bughsin' Djath. Etude de la dynamique océanique de la mer des Salomon : modélisation numérique à haute résolution. Sciences de la Terre. Université de Grenoble, 2014. Français. ⟨NNT : 2014GRENU012⟩. ⟨tel-01069989⟩



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