[Retracted] Prediction of Long-term Variation of Ocean Circulation Based on Grey Correlation Clustering

Table 1

Water mass properties in winter.

Arrangement	Depth	Bit density	Temperature	Salinity
Surface	0–100	20.5–23.7	21.5–29	32.70–34.70
Subsurface layer	100–200	23.7–25.5	15–21.5	34.00–34.90
Secondary middle	200–350	25.5–26.6	9.8–15	34.40–34.70
Middle level	350–900	26.5–27.2	4.5–10	34.25–34.50
Deep level	>900	27.2–27.7	2–5	34.35–34.62