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Hydrography and water masses in the southeastern Arabian Sea during March–June 2003 |
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| Authors: | S S C Shenoi D Shankar G S Michael J Kurian K K Varma M R Ramesh Kumar A M Almeida A S Unnikrishnan W Fernandes N Barreto C Gnanaseelan R Mathew K V Praju V Mahale |
| Institution: | (1) National Institute of Oceanography, Dona Paula, 403 004 Goa, India;(2) Indian Institute of Science, 560 012 Bangalore, India;(3) College of Fisheries, Kerala Agricultural University, 682 506 Kochi, India;(4) Indian Institute of Tropical Meteorology, 411 008 Pune, India;(5) Cochin University of Science and Technology, 682 016 Kochi, India |
| Abstract: | This paper describes the hydrographic observations in the southeastern Arabian Sea (SEAS) during two cruises carried out in March–June 2003 as part of the Arabian Sea Monsoon Experiment. The surface hydrography during March–April was dominated by the intrusion of low-salinity waters from the south; during May–June, the low-salinity waters were beginning to be replaced by the highsalinity waters from the north. There was considerable mixing at the bottom of the surface mixed layer, leading to interleaving of low-salinity and high-salinity layers. The flow paths constructed following the spatial patterns of salinity along the sections mimic those inferred from numerical models. Time-series measurements showed the presence of Persian Gulf and Red Sea Waters in the SEAS to be intermittent during both cruises: they appeared and disappeared during both the fortnight-long time series. |
| Keywords: | Warm pool monsoon circulation upwelling |
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