声学法海底热液口测温方法及其关键技术

Measuring Temperature of Hydrothermal Vent at Seafloor Based on Acoustic Method and Related Critical Technologies

针对海底热液口高温、腐蚀的恶劣环境以及不利于二维温度场测量的特点,采用声学测温的基本方法,提出了海底热液口高精度飞渡时间测量和截面二维温度场重建这两个关键技术。同时引入了数据层析还原算法,进行了单峰温度场的还原实验。实验结果验证了声学法应用于海底热液口温度场测量的正确性和可行性。

In accordance with the features of high temperature and foul corrosive environment at the hydrothermal vent of seafloor that unfavorable to two dimensional temperature field measurement,by adopting basic acoustic temperature measurement method,two of the critical technologies for temperature measurement of hydrothermal vent of seafloor,i.e.,high precise measurement of the time-of-flight（ToF） and cross section two dimensional temperature field reconstruction are proposed.In addition,the algorithm of data tomography and tomography recovery is introduced for conducting recovery experiment of single peak temperature field.The result of experiment verifies the correctness and feasibility of using acoustic method in temperature field measurement for hydrothermal vent at seafloor.