• Muruganantham. P
• Jeevanantham G
• Vinoth M
• Balaguru B
• Khaleel Ahamed A

A study pertaining to the seasonal variation in physicochemical properties of the coastal waters, in summer, winter and monsoon seasons in Rameswaram and Tuticorin, Southeast coast of Tamil Nadu, India, was carried out for a period of 1 year from March 2014 to February 2015.The principal component analysis (PCA) of the physicochemical variables identified the Rameswaram and Tuticorin from the two component possible groups, which were responsible for the data structure, explaining the Rameswaram % total variance 93.26 and also Tuticorin % total variance 95.99 of the data set. In Rameswaram was component 1 to the % total variance (54.23%) and component 2 (39.03). A correlation matrix positively loading of the variables was computed to axis 1 were represented to WT (Water temperature), TP (Total Phosphorus), SP (Sulphate) and Mg (Magnesium) during at summer season while with negatively loading of the parameters in axis 1 were represented by pH, DO, BOD, Cl, NO3-, NH3 and Ca with also negatively loading with component 2 variable to WT, Cl, NH3 and TP while also to positively loading axis 2 were represented to pH, RF, DO, BOD, NH3, SO42−, Ca and Mg during at winter season. And monsoon and negatively loading WT, Cl, NH3 and TP. In TN was component 1 to the % total variance (53.95%) and component 2 (42.04%). A correlation matrix positively loading of the variables was computed to axis 1 were represented to pH, RF and NH3 at monsoon season and negatively loading WT, DO, BOD, Cl, NH3, TP, SO42−, Ca and Mg at summer and also axis 2 were represented to positively loading variables in WT, DO, BOD, Cl, NH3, and SO42−, at summer and winter season. Negatively loading to variables in pH, RF, TP, Ca and Mg at summer and monsoon. Nutrients enrichments observed close to the major urban area in Tuticorin coast are associated with the industrialized activities areas. The higher concentration comparing Tuticorin region than the Rameswaram.

Physico- chemical properties; PCA; South East Coast of Tamil Nadu.

"Seasonal variation in physicochemical properties of coastal waters in Southeast Coast of India with special emphasis on nutrients", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.565-573, November-2018, Available :http://www.jetir.org/papers/JETIR1811376.pdf

"Seasonal variation in physicochemical properties of coastal waters in Southeast Coast of India with special emphasis on nutrients", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp565-573, November-2018, Available at : http://www.jetir.org/papers/JETIR1811376.pdf