A data processing method for MAPR hydrothermal plume turbidity data and its application in the Precious Stone Mountain hydrothermal field |
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| Authors: | CHEN Sheng TAO Chunhui LI Huaiming CHEN Yongshun ZHOU Jianping and WU Tao |
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| Institution: | 1.College of GeoExploration Sicence and Technology, Jilin University, Changchun 130026, China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China3.Institute of Theoretical and Applied Geophysics, School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | Hydrothermal plume is an important constituent of seabed hydrothermal circulation and is also one of the characteristics of active hydrothermal vents. Portable Miniature Autonomous Plume Recorders (MAPR) attached to a towed deep-sea instrument was used to search for hydrothermal plumes and hydrothermal vents. We introduced the basic principle of MAPR based on deep towing technology to detect plumes, then analyzed the factors affecting the quality of the MAPR data and presented a data correction method for MAPR, including instrument location correction, noise reduction processing, system error elimination and seawater background reduction. Finally we applied the method to analyze MAPR data obtained during the Chinese DY115-21 cruise on R/V Dayang I in the "Precious Stone Mountain" hydrothermal field on the Galapagos Microplate. The results provided a better understanding of the distribution of the hydrothermal activity in this field, indicating the presence of a new hydrothermal vent. |
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| Keywords: | hydrothermal plume MAPR deep-sea tow technology Precious Stone Mountain hydrothermal field Galapagos Microplate |
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