The chemical characteristics of seawater in the Prydz Bay,Antarctica |
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| Abstract: | Based on some data obtained in the Sixth Chinese Antarctic Research Expedition during 1989/1990, the relationship between the distribution of nutrient and that Of productivity in the Prydz Bay was discussed. The results show that outside the Emery Ice Shelf there exists an expanse of warm and salty waters, where within the euphotic layer the content of nutrient is relatively low, the saturation of dissolved oxygen is up to 120% and the content of chlorophyll a is more than 1. 00 mg/m3, all this indicating that the Prydz Bay may be considered as a high preductivity area in Antarctica. The vertical distribution of chemical elements showed a strong spring layer like the thermocline, but at 350 m layer abnormal vertical nutrient distribution turned up, even though there was no distinct halocline. Finally the various factors causing this abnormaly were discussed. |
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