Satellite Remote Sensing of Chlorophyll-a Distribution in the Northeast Arabian Sea

摘要

The present paper discuss on spatial and temporal distribution of chlorophyll-a (Chl-α) in the coastal and offshore waters of northeastern Arabian Sea, using Advanced Earth Observation Satellite OCTS data. The Chl-α concentration found high all along the western Indian coastal waters, with significant variations at Gulf of Cambay and Gulf of Kuteh regions, ranging from 0.05 to 4.0 mg m~(-3). Several intermittent eddies with a duration of 3 days to 4 weeks were observed in this season as a result of wind speed and circulation patterns with maximum Chl-α(4.0 mg m~(-3)) at their centers. The coastal chlorophyll is observed to transfer in pole-ward direction coupled with eastern boundary current or West Indian Coastal current (WICC) and, the clockwise tendency of Coriolis effect apart from wind direction. Possible interactions between Chl-α measurements, eddies, Sea Surface Temperature (SST), wind speed and river water discharge are discussed.