Proceedings PaperStatistical analysis of vertical profiles of beam attenuation coefficient and temperature in the North Atlantic
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Statistical analysis was applied for the study of vertical profiles of beam attenuation coefficient C(z) and temperature T(z) measured in the North Atlantic in September 1988. The following statistical parameters were calculated: correlation and covariance matrices, eigenvalues and eigenvectors, and factor loading. The correlation matrix for profiles of beam attenuation coefficient differs from the temperature one. The latter characterizes by high correlation at all depths (10 - 130 m). For profiles of beam attenuation coefficient correlation is high only at vertical separation less than 30 - 40 m. The cumulative percent of total variance explained by the first few eigenvectors and corresponding standard errors of eigenvector representation of observed profiles were calculated. The first factor loading for beam attenuation coefficient is maximum at depths less than 30 m. The second factor loading is maximum at a depth of 50 m where in many cases the nepheloid layer is observed. The study of statistical connection between temperature and beam attenuation coefficient vertical profiles shows that correlation between the first principal components C and T is sufficiently high. For the other principal components C and T correlation is close to zero.