Seasonal Variations of Physicochemical Parameters in Coastal Waters of Visakhapatnam, East Coast of India

In this study, an attempt was made to investigate the physicochemical characteristics of coastal waters at four stations along the coast of Visakhapatnam, India from January to December 2012. Air and surface water temperatures varied from 27.3°C to 33.3°C and from 26.3°C to 32.3°C respectively. Salinity values varied from 23°/ to 34°/ and pH ranged from 6.0 to 8.1. Variation in dissolved oxygen content was from 7.4 to 8.2 ml/l. 00 00 The range of inorganic nutrients viz., nitrates and phosphates were 4.0µg/l to 19.8µg/l and 20.5µg/l to 46.7µg/l respectively.