Some hydrographic observations in the northwestern Indian Ocean during the early SW-monsoon, 1983

D. Quadfasel, K. Jancke


Temperature profile measurements along sections in the northwestern Indian Ocean shortly after the onset of the SW-monsoon 1983 reveal a hydrographic structure typical of pre-monsoon conditions. Thus, away from the coasts the oceans response to windforcing is much less dramatic than in coastal regimes where a reaction within a few days has been observed previously. Strong interleaving of watermasses was observed across a salinity front at intermediate depths in the Northern Somali Basin. The vertical length scale of the layers was found to be proportional to the ratio between the mean salinity gradient and the vertical stability which compares well with theoretical predictions of the characteristics of double diffusive intrusions


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