Some inferences on the equatorial undercurrent in the Indian Ocean based on the physical properties of the waters

Abstract

The International Indian Ocean Expedition, conducted during the period 1960-65, has provided a good amount of oceanographic data facilitating a study of the various features of the Equatorial Indian Ocean, which is least investigated of the three major Oceans, from the point, of view of the current structure. One of the most fascinating problems of the study during the expedition concerns the subsurface currents. In view of the unique nature of the Indian Ocean due to its exposure to the monsoons, a study of the Equatorial Undercurrent in the Indian Ocean and its differences from the Equatorial Undercwrents iji the other two major Oceans will be of special significance and interest. It is possible that a good knowledge of the subsurface currents of the Indian Ocean should help in gaining understanding of the true nature of the Undercurrent and in evaluating the various conflicting explanations of the Pacific and Atlantic Equatorial Undercurrents.