STUDY OF RED TIDE PREDICTION MODEL FOR THE CHANGJIANG ESTUARY

This paper based on field data (on red tide water quality monitoring at the Chaggjiang River mouth and Hutoudu mariculture area in Zhejiang Province from May to August in 1995, and May to September in 1996) presents an effective model for short term prediction of red tide in the Changjiang Estuary. The measured parameters include: depth, temperature, color diaphaneity, density, DO, COD and nutrients (PO4?P, NO2?N, NO3?N, NH4?N). The model was checked by field-test data, and compared with other related models. The model: Z=SAL?3.95 DO?2.974 PH?5.421 PO4?P is suitable for application to the Shengsi aquiculture area near the Changjiang Estuary. Key words Changjiang Estuary - red tide - prediction model Project 493007 supported by the Natural Science Foundation of Zhejiang Province, and also supported by the Science and Technology Committee of Zhejiang Province (Key Project No. 618).

This paper based on field data (on red tide water quality monitoring at the Changjiang River mouth and Hutoudu mariculture area in Zhejiang Province from May to August in 1995, and May to September in 1996) presents an effective model for short term prediction of red tide in the Changjiang Estuary. The measured parameters include: depth, temperature, color diaphaneity, density, DO, COD and nutrients (PO 4 P, NO 2 N, NO 3 N, NH 4 N). The model was checked by field test data, and compared with other related models. The model: Z=SAL-3.95 DO-2.974 PH-5.421 PO 4 P is suitable for application to the Shengsi aquiculture area near the Changjiang Estuary.