Recent advances in specific aspects of coastal oceanographic studies in india and their futurology*

Abstract

Remarkably enough, the recent studies of Indian coastal water upwelling brought to light the limibtioas of the existing theoretical knowledge of the coastal water upwelling. The error in the Ekman spiral-based explanation of coastal water upwelling was pointed out Intensification of the western boundary currents of the world oceans and the formation of upwelling on the eastern boundary were intuitively coupled, probably leading to the concept of combining the ldimensional Ekman theory with the 2dimensional Stommel theory for the integrated physical picture of both the conditions at the boundaries. It was also pointed out that the upward currents in upwelling would terminate at the core of the stable thermocline, instead of generally plieved termination at the sea surface. A conapt of three-phase sediment particles with different viscosity properties in the suspended mud of the mudbanh was postulated to explain the tranquility of mudbanh. This concept was expected to generate interest in marine engineers to design and fabricate suitable devices for artificial creation of mudbanh for improvement in fisheries. The reant-studies in India on coastal water pollution were described and the need for dynamic studits of pollutanb was stressed. Indian efforts for making use of the remote sensing technology for coastal water information were projected and the futurology of the art of this novel technique in Indian climatic conditions was hinted.