The Transport Direction and Variation Process of Water Temperature Heat at Surface

According to the water temperature of Jiaozhou Bay in May, August and October of 1979, based on its horizontal and vertical variation, and the difference between water temperature at surface and bottom, the impact of the transport amount and time of water temperature heat on its variation at surface and bottom and regional variation was studied. The results showed that in May, from northeastern to northern nearshore waters, water temperature reached high as 15.30-16.50 °C, which began to rise from inside waters to bay mouth, and to outside waters. In August, from eastern to northern nearshore waters, it reached high as 28.09-28.70 °C, which began to rise in same order. In October, in eastern nearshore waters, it was as high as 18.39°C, which began to increase from outside waters to bay mouth, and to inside waters. Regionally, from inside waters to bay mouth and outside waters, the minus of water temperature at surface and bottom showed that when it was transported to Jiaozhou Bay, it first reached the surface, then rapidly and constantly to sea floor, showing the variation of water temperature at surface and bottom. Spatially, water temperature at surface caused low heat and slow increase along with the horizontal and vertical gradients in May, high heat and rapid increase in August and heat and increase in October. Besides, the homogeneous layer was formed in outside waters vertically from surface and bottom. In bay mouth, water temperature at bottom was slightly higher than that at surface, whereas, in inside waters, it was opposite. Therefore, the temporal and spatial variation displayed the variation of water temperature at surface along with horizontal and vertical gradients. In addition, the modelling diagram was proposed and the transport direction and variation process of water temperature heat at surface were clarified.