Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/5336
Título: Shallow-water tracking in the sea Nazaré
Autor: Porter, M. B.
Stephan, Y.
Démoulin, X.
Jesus, S. M.
Coelho, E.
Palavras-chave: Tomography
Underwater sound
Matched-field processing
Oceanographic regions
Acoustic tomography
Acoustic wave propagation
Tides
Data: Abr-1998
Editora: IEEE
Citação: M.B. PORTER, Y. STEPHAN, X. DEMOULIN, S.M. JESUS and E.F. COELHO, ``Shallow-water tracking in the sea Nazaré'' in Underwater Technology'98, IEEE Ocean Engineering Society, Tokyo, Japan, pp. 29-34, (doi:10.1109/UT.1998.670053).
Resumo: In the summer of 1996, an experiment was conducted off the coast of Portugal to study the effects of internal tides on sound propagation. This experiment—called INTIMATE '96 (Internal Tide Investigation by Means of Acoustic Tomography Experiment)—has provided a great deal of insight about the variability of pulse transmission over space and time. In contrast to a common view of shallow-water propagation as complicated and unpredictable, we find a steady pattern of echoes. The echo-pattern stretches and shrinks in a systematic way with the tides and allows us to infer the components of the first few oceanographic modes. We also used the echopattern to track the source over a period of several days. During this period the isotherms in the ocean wavered by 20 m as a result of the tides, providing a challenge for model-based tracking. We will discuss these acoustic results with emphasis on the source tracking.
Peer review: yes
URI: http://hdl.handle.net/10400.1/5336
DOI: http://dx.doi.org/10.1109/UT.1998.670053
ISBN: 0-7803-4273-9
Versão do Editor: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=670053
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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