Skip to main content
padlock icon - secure page this page is secure

Free Content Hydrography and circulation off the west coast of India during the Southwest Monsoon 1987

Download Article:
(PDF 812.2 kb)
During June–August 1987 thirteen hydrographic sections, each approximately perpendicular to the coast, covered the coastal region off western India. The southernmost section showed occurrence of upwelling, the nearshore surface temperature being about 2.5°C lower than farther offshore. There was a shallow (approximately 75 to 100 m deep) equatorward surface current, below which there were signatures of downwelling indicative of a poleward undercurrent hugging the continental slope. T-S characteristics showed that the undercurrent carried low salinity water found in the southwestern Bay of Bengal. Conditions similar to those found at this section existed up to around 15N but the intensity of upwelling, and the signatures of the surface current and the undercurrent grew weaker progressively from the south to the north, and ceased to be noticeable at about 20N. The width of the surface current was about 150 km, whereas the undercurrent was about 40 km wide. The transport in the equatorward surface current increased from less than 0.5 × 106 m3/s to about 4 × 106 m3/s from the north to the southern end of the coast.

The winds during the observation varied between west-northwesterly near the southern end of the coast to west-southwesterly near the northern end. The longshore component of the wind stress was generally equatorward. Its magnitude was maximal (0.5 dyn/cm2) near the southern end.

On the basis of these observations we propose that the circulation off the west coast of India during the southwest monsoon, though weak, is dynamically similar to the wind-driven eastern boundary currents found elsewhere in the oceans.

6 References.

No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: May 1, 1990

More about this publication?
  • The Journal of Marine Research, one of the oldest journals in American marine science, publishes peer-reviewed research articles covering a broad array of topics in physical, biological and chemical oceanography. Articles that deal with processes, as well as those that report significant observations, are welcome. Biological studies involving coupling between ecological and physical processes are preferred over those that report systematics. The editors strive always to serve authors and readers in the academic oceanographic community by publishing papers vital to the marine research in the long and rich tradition of the Sears Foundation for Marine Research. We welcome you to the Journal of Marine Research.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more