SCLEROCHRONOLOGY OF PORITES-LUTEA (HERMAT YPIC SCLERACTINA) IN MAYOTTE-ISLAND (SW INDIAN-OCEAN) - NEW APPROACH BY PRINCIPAL COMPONENTS-ANALYSIS IN FREQUENCIES DOMAIN
P. Chevrot et al., SCLEROCHRONOLOGY OF PORITES-LUTEA (HERMAT YPIC SCLERACTINA) IN MAYOTTE-ISLAND (SW INDIAN-OCEAN) - NEW APPROACH BY PRINCIPAL COMPONENTS-ANALYSIS IN FREQUENCIES DOMAIN, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 318(6), 1994, pp. 803-808
A new methodological approach to pretreatment of X-rayed skeleton slic
es of the massive coral Porites lutea by Principal Components Analysis
(PCA) after Fourier's transformation is described. The primary digiti
zed frame is filtered and separated into two frames: the first is asso
ciated with growth bands information, here annual, and the second is l
inked to mesoarchitecture signature (polyp size) and to record noise.