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Ref.: SiPLAB Report 05/03, University of Algarve,2003.
Abstract: Acoustic tomography in range-dependent waveguides using source-array pair represents an inverse
problem with many potential solutions. The present problem is to model an upwelling filament which is a localized
up rise of cold water and introducing a high degree pf range dependence. In this study a parameterization scheme with
a reduced number of parameters is proposed in order to represent the spatial evolution of the filament using an
asymmetric Gaussian function parameterized by two variances, an amplitude coefficient and a mean value. Using a real
data example of the filament of the California current system, this modelling scheme is tested on semi-synthetic
data. The results indicate that such an approach can be considered for an efficient modelling of a complex oceanographic
ACKNOWLEDGMENT: this work was supported by ATOMS project (FCT, Portugal).