新型深海地温梯度测量设备(FY2)研发

A new equipment for deep-sea geothermal gradient measurement(FY2)

随着海底地热学研究的不断深入,对海底地热测量仪器的技术指标提出了更高要求。基于前期自主研发的FY1自容式微型温度测量记录仪,经过大量实践数据与经验积累,研制出新型的FY2自容式微型温度测量记录仪。为验证FY2的性能,在实验室恒温水槽和南海北部陆坡深水海域对FY1和FY2进行了仪器校验和比测,结果显示FY2的测量分辨率优于0.0001℃,测量准确度优于±0.0015℃,比测点的海底热流值为78 mW/m^(2)。实验结果证实FY2探针不仅具有高分辨率、高精度、性能稳定的特点,而且测量效率高,可为海底热流探测与研究提供新一代可靠的技术支持。

The seabed geothermal research has become a common component of integrated marine geological survey nowadays and high requirements are raised to the technical performance of instruments for seabed measurement.Based on the FY1,the self-contained miniature temperature measurement recorder independently developed by Guangzhou Marine Geological Survey,a new type of self-contained miniature temperature measurement recorder,FY2 in abbreviation,was developed after summarization of previous practicce data and survey experiences.In order to verify the performance of the FY2,efforts have been devoted to the instrument calibration and the comparison of the FY2 to the FY1 in laboratories under a constant temperature flume as well as in the deep water area on the northern slope of the South China Sea.Results show that the resolution of the FY2 is higher than 0.0001℃,and the precision is higher than±0.0015℃.The seabed geothermal flow value of the measuring point is 78 mW/m^(2);indicating an excellent performance of the new equipment.The new equipment also has high efficiency,and may provide strong technical support for the research of seabed geothermal flow.