Study on the High Precision Acoustic Measurement Techniques for Determining Temperature Field Around Seafloor Hydrothermal Vent  

作　　者：蔡勇 樊炜 周艳 付现桥 方辉 金涛 

机构地区：[1]Ocean Research Center of Zhoushan,Zhejiang University [2]Institute of Mechatronic Engineering,Hangzhou Dianzi University [3]Zhejiang Jinying Food Machinery Co.,Ltd. [4]Institute of Chemical Machinery Engineering,Zhejiang University

出　　处：《China Ocean Engineering》2012年第4期723-732,共10页中国海洋工程（英文版）

基　　金：supported by the National Science and Technology Support Program of China(Grant No.2012BAB09B02);Zhejiang Key Discipline of Marine Technology and Systems(Grant No.20120109);the National High Technology Research and Development Program of China(863Program,Grant No.2007AA09Z213)

摘　　要：This paper presents the basis of acoustic method used for temperature field measurement of seafloor hydrothermal vent and two techniques of the parabolic interpolation and the bending compensation of propagation paths of acoustic signal are introduced. Experimental research is performed to exactly rebuild the temperature field around hot springs on the floor of Qiezishan Lake, Yunnan, China. The accuracy of the travel time estimation has been improved based on the aforementioned technique and method. At the same time, by comparison of the results of temperature field with different means, the max absolute error, the maximum relative error and the root mean square error are given. It shows that the technique and the method presented in the paper can be applied to the temperature field measurement detector around the seafloor hydrothermal vent. It also has a good accuracy.This paper presents the basis of acoustic method used for temperature field measurement of seafloor hydrothermal vent and two techniques of the parabolic interpolation and the bending compensation of propagation paths of acoustic signal are introduced. Experimental research is performed to exactly rebuild the temperature field around hot springs on the floor of Qiezishan Lake, Yunnan, China. The accuracy of the travel time estimation has been improved based on the aforementioned technique and method. At the same time, by comparison of the results of temperature field with different means, the max absolute error, the maximum relative error and the root mean square error are given. It shows that the technique and the method presented in the paper can be applied to the temperature field measurement detector around the seafloor hydrothermal vent. It also has a good accuracy.

关 键 词：SEAFLOOR hydrothermal vent acoustic temperature method temperature field parabolic interpolation refraction of acoustic signal 

分 类 号：P733.4[天文地球—物理海洋学]