Emprego das funções ortogonais empíricas na tomografia acústica oceânica

Abstract

The Ocean Acoustic Tomography (OAT) aims to determine properties of the marine environment through the sensitivity of the acoustic fi eld to variations in parameters such as sea water temperature. Among the available methods, matched-fi eld tomography holds promise, requiring the use of empirical orthogonal functions to enable the inversion of the sound-speed profile. The method is shown to be valid for an exhaustive search of sound-speed profi les, although further development of the algorithm is needed to refi ne the results and reduce computational costs. OAT presents itself to contribute by generating products of interest for Oceanography and allowing the continuous and short-time monitoring of a large area, which simplifies the usual processes of in situ measurements and the costs involved.