Resumo

GARCIA, FRANCISCO; PALACIO, CARLOS  e  GARCIA, URIEL. WATER QUALITY AT SANTA MARTA COASTAL AREA (COLOMBIA). Dyna rev.fac.nac.minas [online]. 2012, vol.79, n.173, pp.85-94. ISSN 0012-7353.

Multivariate statistical techniques were used to investigate the temporal and spatial variations of water quality at the Santa Marta coastal area where a submarine outfall that discharges 1 m3/s of domestic wastewater is located. Two-way analysis of variance (ANOVA), cluster and principal component analysis and Krigging interpolation were considered for this report. Temporal variation showed two heterogeneous periods. From December to April, and July, where the concentration of the water quality parameters is higher; the rest of the year (May, June, August-November) were significantly lower. The spatial variation reported two areas where the water quality is different, this difference is related to the proximity to the submarine outfall discharge.

Palavras-chave : Water quality; Multivariate statistical techniques; submarine outfall; spatial variation; temporal variation.

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