Phan Minh Thu, Nguyen Trinh Duc Hieu, Pham Thi Phuong Thao
Author affiliations


  • Phan Minh Thu Principal Researcher of Institute of Oceanography
  • Nguyen Trinh Duc Hieu Institute of Oceanography
  • Pham Thi Phuong Thao Ho Chi Minh City Institute of Physics



Nha Trang bay, water quality.


Based on survey data in the period of 2013 - 2015 and historical data between 1996 - 1998, the paper showed the variation of water quality parameters by time. The concentration of total suspended sediment, chlorophyll-a, dissolved inorganic nitrogen, dissolved inorganic phosphorus and ratio of N:P changed significantly by season. The results of assessing water quality by UNTRIX (integrated concentration of Chlorophyll-a, dissolved inorganic nitrogen, dissolved inorganic phosphorus and level of saturated oxygen) indicated the quality levels were increased from meso-eutrophication in 1996 (average UNTRIX: 4.54 ± 0.76) to oligo-eutrophication in the period of 2013 - 2015 (average UNTRIX from 2.62 ± 0.66 to 3.81 ± 0.45).


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How to Cite

Thu, P. M., Hieu, N. T. D., & Thao, P. T. P. (2016). VARIATION OF WATER QUALITY IN NHA TRANG BAY. Vietnam Journal of Marine Science and Technology, 16(2), 144–150.




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