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Title: Assessment of temporal variation in coastal water characteristics through multivariate statistics- A case study at southwestern Bay of Bengal, India
Authors: Mohanty, A.K.
Sahu, Gouri
Bramha, S.N.
Samantara, M.K.
Satpathy, K.K.
Keywords: PCA;Cluster analysis;Coastal waters;Physicochemical properties;Seasonal variations;Bay of Bengal;East cost of India
Issue Date: Sep-2014
Publisher: NISCAIR-CSIR, India
Abstract: A study was carried out in the coastal waters of Kalpakkam, southeast coast of India, in order to find out the prevalence of different water masses in a spatio-temporal scale. This region of southwestern Bay of Bengal is influenced by both southwest and northeast monsoon. However, in absence of any major perennial freshwater input into the coastal water, the water mass characteristics in this region mainly depends upon the coastal current pattern. Statistical analysis showed two temporally distinct water mass; one during the monsoon period and the other during the pre- & post-monsoon periods. Cluster analysis also depicted existence of a well marked spatial heterogeneity in the study area.  Five principal components developed showed distinct environmental states of coastal waters such as nitrogen enrichment, phytoplankton growth, phosphate enrichment, low dissolved oxygen & high temperature condition and nitrite enrichment which might have existed at this location on a temporal scale. 
Page(s): 1718-1731
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.43(09) [September 2014]

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