Heat and mass flux estimation of modern seafloor hydrothermal activity

Research on heat and mass flux caused by modern seafloor hydrothermal activity is very important,because it is not only the base of ocean environment research,but also involved in historical evolution of seawater properties.Currently,data using to estimate heat fluxare from observation data at hydrothermal smokers,low-temperature diffusive flow and the mid-ocean ridge mainly.But there are some faults, for example,there is a lack of concurrent conductive itemin estimating heat flux by smokers,error between the half-space cooling model and the observation data is too large.So,three kinds of methods are applied to reestimating heat flux of hydrothermal activity resepectively,corresponding estimation is 97.359 GW by the hydrothermal smoker and the diffusive flow,84.895 GW by hy drothermal plume,and 4.11 TW by exponential attenuation method put forward by this paper.Research on mass flux estimation is relatively rare,the main reason for this is insufficient field observation data.Mass fluxes of differ entelements are calculated using data from TAG hydrotherm area in the Mid-Atlantic Ridge for the first time. Difference of estimations by different methods reflects the researching extent of hydrothermal activity,and system atically in-situ observation will help to estimate the contribution of hydrothermal activity to ocean circulation and global climate precisely.