Abstract:

 According to the hydrothermal activity models developed in recent years, the rules of the rising height and heat flux of the thermal column were systematically considered. Results show that (1) the thermal rising height is related to the bottom horizontal flow and heat source characteristics, and the heat flux of the single hydrothermal vent and of the neutral buoyancy layer in the thermal column could reach to a magnitude of 109 W/m2; that (2) the hydrothermal plume could be affected by many factors such as shape, salinity, temperature and velocity, which changed with height; that (3) by considering the characteristics of the oceanic crust, the buoyancy flux and the max rising height of the thermal column would be changed, and the rising height would reach more than 1000 m, and the heat flux would reach to a magnitude of 108 W/m2. The values obtained above could be used for the further study of the mechanism of hydrothermal plume movement and the establishment of hydrothermal activity model.

Key words: Key words: deepsea; hydrothermal plume; rising height; heat flux