title: Variations of physicochemical properties in Kalpakkam coastal waters, east coast of India, during southwest to northeast monsoon transition period.
abstract: A significant variation in physicochemical properties of the Kalpakkam coastal waters, eastern part of India, was observed during the event of southwest to northeast monsoon transition. Increase in nitrate, total nitrogen, and silicate concentrations were noticed during post-transition period. Ammonia concentration was at peak during transition period as compared to pre- and post-transition periods. Hypo-saline condition (~23 psu) was observed during post-transition as the surface water salinity decreased by ~10 psu from the pre-transitional values. Turbidity, suspended particulate matter, phosphate and total phosphorous values decreased marginally, coinciding with northward to southward current reversal. A drastic decrease (eightfold) in chlorophyll-a concentration was observed in the coastal water during post-transition period.
authors.affiliation: Environmental and Industrial Safety Section, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, Tamil Nadu, India. satpathy@igcar.gov.in
authors.forename: Kamala Kanta
authors.initials: KK
authors.lastname: Satpathy
authors.forename: Ajit K
authors.initials: AK
authors.lastname: Mohanty
authors.forename: Gouri
authors.initials: G
authors.lastname: Sahu
authors.forename: Santosh K
authors.initials: SK
authors.lastname: Sarkar
authors.forename: Usha
authors.initials: U
authors.lastname: Natesan
authors.forename: R
authors.initials: R
authors.lastname: Venkatesan
authors.forename: M V R
authors.initials: MV
authors.lastname: Prasad
mesh_terms: D000641:Ammonia / Q000032:analysis; D002734:Chlorophyll / Q000032:analysis; D016000:Cluster Analysis; D055867:Cyclonic Storms; D004784:Environmental Monitoring; D007194:India; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D025341:Principal Component Analysis; D054712:Salinity; D012621:Seasons; D012623:Seawater / Q000737:chemistry*; D017640:Silicates / Q000032:analysis
chemical_list: D009566:Nitrates; D017640:Silicates; D002734:Chlorophyll; D010758:Phosphorus; D000641:Ammonia; D009584:Nitrogen