海底网激光拉曼光谱仪器节点及试运行结果分析  

The Operation of OUC-Raman Instrument Node on the Cabled Seafloor Observatory Network for Long-Term Observation

作　　者：叶旺全 李颖[1] 刘春昊 吴清天 郭金家[1] 亓夫军[1] 程凯[1] 郑荣儿[1] YE Wang-Quan;LI Ying;LIU Chun-Hao;WU Qing-Tian;GUO Jin-Jia;QI Fu-Jun;CHENG Kai;ZHENG Rong-Er(Optics & Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, China;Nanhai Station, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570105, China)

机构地区：[1]中国海洋大学光学光电子实验室,山东青岛266100 [2]中国科学院声学研究所南海研究站,海南海口570105

出　　处：《中国海洋大学学报（自然科学版）》2020年第10期146-154,共9页Periodical of Ocean University of China

基　　金：国家高技术研究发展计划项目(2012AA09A405)资助。

摘　　要：“南海深海海底观测网试验系统”是我国在南海海域重点建设的一个对深海环境进行实时监测的缆系海底观测网试验系统,而激光拉曼光谱仪器节点(OUC-Raman节点)则是该海底观测网中进行化学环境观测的科学仪器节点之一,目前已有两套OUC-Raman节点成功接入海底观测网。本文将对OUC-Raman节点为搭载海底观测网进行长期观测所进行的设计结构和功能进行描述,并对其近两年来在海底观测网上运行的数据进行了处理和分析。研究表明,OUC-Raman节点在海底观测网上运行状态基本良好,但同时也暴露了其海洋光谱传感器在深海长期运行的问题,主要表现在:(1)舱内温度的起伏变化对激光器和光谱仪等关键器件的影响,导致获得的拉曼光谱的谱峰漂移,后期将完善温控模块;(2)测量水体环境的变化与实验室标定环境的差异使得测量结果产生误差,解决方案是在实验室构建模拟海洋环境,并在此环境下进行标定;(3)激光能量的衰减决定了该类仪器节点运行时长极限。The“South China Sea Seafloor Observatory Network”was a cabled seafloor observatory network which was constructed for real-time monitoring of the deep sea environment in the South China Sea.The laser Raman spectroscopy instrument node(OUC-Raman)was one of the scientific instrument nodes for chemical environment observation.Two sets of OUC-Raman nodes have been successfully connected to the seafloor observatory network.In this paper,the structure and function of the OUC-Raman node was designed for long-term observation on the observatory network,and the operation data in the past two years was processed and analyzed.The results show that the OUC-Raman node worked well on the observatory network.But a few of issues about long-term operation of marine instruments based on spectroscopy were exposed.(1)The core devices such as laser and spectrometer were influenced by the fluctuation of the temperature in the cabin which led to the drift of the Raman peak of the obtained spectra.(2)The difference between the deep sea environment and the laboratory environment caused errors in the measurement results.So that it is necessary to simulate marine environment in the laboratory and to calibrate in simulation environment.(3)The attenuation of laser energy determined the limit of operation time of that instrument nodes.

关 键 词：海底观测网 拉曼光谱仪器节点 南海网 长期观测 深海观测 

分 类 号：P715.1[天文地球—海洋科学]