title: Evaluation of significant sources influencing the variation of physico-chemical parameters in Port Blair Bay, South Andaman, India by using multivariate statistics.
abstract: Port Blair is the capital city of Andaman & Nicobar Islands, the union territory of India. More than 50% of the population of these islands lives around Port Blair Bay. Therefore the anthropogenic effects in the bay water were studied for monitoring purpose from seven stations. Physico-chemical parameters of seawater were analyzed in samples collected once in every 3 months for 2 years from seven sampling stations located in Port Blair Bay, South Andaman Island to evaluate the spatial and tidal variation. Cluster analysis and factor analysis were applied to the experimental data in an attempt to understand the sources of variation of physico-chemical parameters. In cluster analysis, the stations Junglighat Bay and Phoenix Bay having high anthropogenic influence formed a separate group. The factors obtained from factor analysis indicated that the parameters responsible for physico-chemical variations are mainly related to land run-off, sewage outfall and tidal flow.
authors.affiliation: National Institute of Ocean Technology-NIOT, Chennai 600100, India. birajkumar@gmail.com
authors.forename: Biraja Kumar
authors.initials: BK
authors.lastname: Sahu
authors.forename: Mehmuna
authors.initials: M
authors.lastname: Begum
authors.forename: M K
authors.initials: MK
authors.lastname: Khadanga
authors.forename: Dilip Kr
authors.initials: DK
authors.lastname: Jha
authors.forename: N V
authors.initials: NV
authors.lastname: Vinithkumar
authors.forename: R
authors.initials: R
authors.lastname: Kirubagaran
mesh_terms: D061006:Bays / Q000737:chemistry*; D016000:Cluster Analysis; D004784:Environmental Monitoring; D005163:Factor Analysis, Statistical; D007194:India; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D014874:Water Pollutants, Chemical