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Water Masses in the Gulf of Aden.
Mohammed Ali Al Saafani, from the Sana'a University, Sana'a, Yemen who has been working with Dr Satheesh Shenoi of NIO for his studies recently identified and refined the definitions of water masses in the Gulf of Aden and described their spatio-temporal variability. He compiled and used the hydrographic data collected from Gulf of Aden since 1920. According to Mr Al Saafani, four water masses exist in the Gulf of Aden based on their salinity characteristics. The Red Sea Water that flows from the Red Sea is the most prominent water in the Gulf of Aden. This occupies about 37% of the total volume of Gulf of Aden. The Gulf of Aden Surface Water (~3%) forms as a mixture of local water and the water from western Arabian Sea during winter and Red Sea surface water during summer. The intermediate water, identified as Gulf of Aden Intermediate Water, occupies about 9% of the total volume of Gulf of Aden; a characteristic salinity minimum is associated with it (26.50 kg m
). In his research he further states that the northward spread of sub-tropical subsurface water from the south appears to be the major source of Gulf of Aden Intermediate Water. The bottom water, named Gulf of Aden Bottom Water, showed the least variability. It was formed due to the mixing of Red Sea Water and water of southern origin. Mixing triangles have been used to analyze the composition of water in the Gulf of Aden. Mr. Al Saafani joined NIO in June 2003 for a Ph.D. programme. He registered as a Ph.D. student with Goa University (Marine Science Department) in July 2003. He has been supported through a scholarship sponsored by Sana'a University, Government of Yemen. Prior to joining NIO, he obtained his masters degree in Marine Sciences from Goa University. During his masters he also worked with Dr Shenoi for his M.Sc. dissertation. Later in 2004, he published that work in the Proceedings of Indian Academy of Sciences (Earth & Planetary Sciences). The details are: Al Saafani, M.A. and S.S.C. Shenoi (2004) Seasonal cycle of the hydrography in the Bab-el-Mandab region, southern Red Sea., Proceedings of Indian Academy of Sciences (Earth and Planetary Science), 113, 269-280. For more information, please read: Saafani, M.A.A.; Shenoi, S.S.C. Water masses in the Gulf of Aden. J. Oceanogr.: 63(1); 2007; 1-14.
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