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| Laurec, Alain; Blanc, François. |
| Continuous sampling is now widely used in oceanography and requires new tools for data processing. The theory of stochastic processes and especially spectral analysis offers powerful ones. We are dealing in this paper with bivariate time series : temperature and salinity were continuously measured during the CINECA-CHARCOT II cruise, in the upwelling area of North-West Africa. The record has been splitted into three parts corresponding to straight lines. Those time series have been prewhitened using the first finite difference filter, spectra and cross-spectra were smoothed using the Parzen window. Power spectra reveals obvious peaks. Coherencies are higher in low frequencies. The basic phenomena, mixing due to the upwelling (transfer functions can be... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1974 |
URL: http://archimer.ifremer.fr/doc/1974/publication-5153.pdf |
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| Blanc, François; Laurec, Alain. |
| In an answer to FRONTIER (1975)à the authors try to define their philosophy about data processing by mathematical methods in marine ecology. They point out that the ecologist may not expect miracles from these methods, but that, correctly used, they provide an especially heuristic tool if not a thaumaturgic one. They first discuss the exact suggest the main features of what should be any correct strategg in data processing, and try to give FRONTIER an answer on certain precise topics. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1976 |
URL: http://archimer.ifremer.fr/doc/1976/publication-5111.pdf |
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