Exploring Antarctic subglacial lakes with RECoverable Autonomous Sonde(RECAS):Design and first field tests

SUN YouHong ¹PAVEL Talalay ¹LI YuanSheng ²YU HaiBin ³WANG DongLiang ⁴LI GuoPing ⁵XU LiPing ⁶GONG Da ⁷WANG JiXin ⁷WANG JianHua ⁷WANG Ting ⁷ZHANG Nan ⁷WANG ZhiGang ⁷CHEN YanJi ⁷LIU YunChen ⁷LI YaZhou ⁸PENG ShiLin ³SHI JianGuang ³AN ChunLei ²GE Qun ⁵XU Jing ⁵NI XiaoKang ⁵CUI QiFeng ⁴JIANG Qiang ⁴MIKHAIL Sysoev ⁷Yang Yang ⁷WANG RuSheng ⁷WEI XianZhe ⁷WANG Yu ⁷ZHU TianXin ³DENG ZhiPeng ⁷ALEXEY Markov ⁷LI Bing ⁸FAN XiaoPeng⁷

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作者信息

1. Polar Research Center,Jilin University,Changchun 130000,China;School of Engineering and Technology,China University of Geosciences,Beijing 100083,China
2. Polar Research Institute of China,Shanghai 200120,China
3. College of Electronics and Information,Hangzhou Dianzi University,Hangzhou 310018,China
4. Aerospace System Engineering Shanghai,Shanghai 201109,China
5. Nanjing Institute of Astronomical Optics & Technology,National Astronomical Observatories,Chinese Academy of Sciences,Nanjing 210000,China
6. National Ocean Technology Center,Tianjin 300000,China
7. Polar Research Center,Jilin University,Changchun 130000,China
8. School of Engineering and Technology,China University of Geosciences,Beijing 100083,China
折叠

Abstract

Conducting scientific drilling on subglacial lakes and obtaining samples of subglacial lake water holds great significance in unraveling the formation and evolution of Antarctic subglacial lakes and early Earth's life forms.Despite various approaches to access and directly sample subglacial water and sediments,clean access and exploration of subglacial lakes remain challenging.To address this concern,Jilin University has developed the RECoverable Autonomous Sonde(RECAS)prototype.This tech-nology enables sampling and in-situ detection of subglacial lake water while being isolated from the surface,thus minimizing the risk of pollution.Laboratory tests,including downward and upward drilling,long-running,remote-control,and cold-environ-ment assessments,were conducted to validate the sonde's principle and functionality.During the 38th Chinese National Antarctic Research Expedition,CHINARE(2021-2022 season),the RECAS prototype underwent testing on the flank region of Dålk glacier,10 km from Zhongshan Station in Antarctica.Three boreholes with depths of 200.3,183.2,and 133.5 m were successfully drilled,with the refrozen meltwater sealing the boreholes during the process.Approximately 600 mL of melted water samples were collected from each hole.Throughout the drilling tests,all systems of the RECAS prototype performed within the expected ranges.

Key words

subglacial lake/thermal drilling/water sampling/Antarctic/autonomous sonde

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基金项目

National Key Research and Development Project of the Ministry of Science and Technology of China(2016YFC1400302)

National Key Research and Development Project of the Ministry of Science and Technology of China(2023YFC2812602)

National Natural ScienceFoundation of China(41941005)

CHINARE forfield operations in Antarctica()

出版年

2024

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

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