Section: New Results

Optimal wavelets and ocean dynamics

Participants : Hussein Yahia, Oriol Pont, Véronique Garçon, Joel Sudre, Claire Pottier [ CNES ] .

In collaboration with the LEGOS team and Claire Pottier from CNES, we are developping the use of optimal wavelets in conjunction with the formalim of reconstructible systems and the MMF to obtain high spatial resolution maps of the ocean dynamics of SST (Sea Surface Temperature) data. The method develops by an estimation of the cascading properties associated to the presence of a set of hierarchical geometric structures associated to the flow. A determination of these cascading properties is achieved through an approximation of an optimal wavelet. Then, ocean dynamics information derived from low spatial resolution altimetric data is transferred through the scales to determine an oriented geostrophic stream function.