基于多参数化学传感器的海底热液探测方法研究
The research on hydrothermal vent detection with the multiparameter chemical sensor
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摘要: 基于热液及其羽状流的化学异常提出了一种海底热液的化学式探测方法。根据自行开发的Eh.Ag/Ag2S和pH三种化学电极,设计了多参数化学传感器系统。通过海试证明多参数化学传感器可灵敏地检测出由热液异常引起的化学量变化,并在长达半年的多次使用中表现出其稳定性好、寿命长的特点。在东太平洋中脊(EPR)赤道区域和西南印度洋中脊(SWIR)的60条测线中,获得有效测线55条,其中在29条测线上发现明显或可能的热液异常。研究表明,应用多参数化学传感器探测进行海底热液化学异常,是一种有效的方法。Abstract: On the basis of chemical anomalies between hydrothermal plumes and surrounding seawater a means of detecting hydrothermal activity is proposed. Therefore, a multiparameter chemical sensor integrating three types of electrochemical electrodes, including Eh, Ag/Ag2S and pH electrodes, is designed to be applied in deep-sea measurements during DY115-20 cruise by Dayang No.1 research vessel. It is proved by the measuring results that the multiparameter chemical sensor can help to detect the chemical anomalies of the plumes. The electrodes exhibit good sensitivity, stability and long lifetime in the multiple applications during six months. Among the 60 measurements in both East Pacific Ridge (EPR) and Southwest Indian Ridge (SWIR), the integrated sensor records 55 groups of valid data, in which 29 records indicate potential active hydrothermal vents, which proves an effective tool in hydrothermal activity detection.
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Key words:
- hydrothermal detection /
- chemical anomalies /
- chemical sensor
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