极地研究

极地研究 ›› 2021, Vol. 33 ›› Issue (3): 459-468.DOI: 10.13679/j.jdyj.20200069

• 研究进展 • 上一篇    下一篇

“雪龙2”号长柱状取样器的极地应用

袁东方，王硕仁，陈清满，沈悦，廖周鑫   

  1. 中国极地研究中心, 上海 200136
  • 收稿日期:2020-10-27 修回日期:2020-11-30 接受日期:2020-12-02 出版日期:2021-09-30 发布日期:2021-10-13
  • 基金资助:
    新建极地科考破冰船项目(发改投资[2015]429号)

Polar application of the giant piston corer on Xuelong 2

Yuan Dongfang, Wang Shuoren, Chen Qingman, Shen Yue, Liao Zhouxin   

  1. Polar Research Institute of China, Shanghai 200136, China
  • Received:2020-10-27 Revised:2020-11-30 Accepted:2020-12-02 Online:2021-09-30 Published:2021-10-13

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摘要： 中国南北极科考为极地生态、气候等学科发展提供了丰富的数据资源, 其中海底沉积物取样是历次科考所涵盖的内容之一。在国际上, 箱式、蚌式和多管采泥器作为常规的表层沉积物取样设备。在我国, 应注意到在长柱状沉积物取样设备上和国外存在很大差距, 增强沉积物取样能力为时下迫切需要解决的难点之一。早期服役的“雪龙”号极地科考船不具备搭载长柱状取样器的能力, 采用的为总长度小于8 m的普通重力取样器来进行柱状沉积物取样作业, 所获取的沉积物岩心样品长度较短, 一般在4~6 m。从2019年7月11日始, “雪龙2”号正式交付自然资源部并加入我国极地考察序列。“雪龙2” 号配备达到国际主流水平的总长度22 m的长柱状重力活塞取样器。该取样器分别在南北极进行了首次应用, 成功获取了长度超过18 m的高质量长柱状沉积物样品, 取心率超过80%, 极大增强了我国在极地考察过程中采集高质量长柱状沉积物样品的能力。

关键词: “雪龙2”号, 破冰船, 沉积物, 长柱状取样器, 极地

Abstract: Polar expedition had supplied abundant database for ecology and climatology research, while marine sediment sample is one of the main subject over the Antarctic and Arctic scientific expeditions. Internationally, box-core, grab, and multi-core samplers are widely used to collect pelagic sediments.  However, it should be noted that there is a large gap in the long core sediment sampling equipment around the domestic and foreign countries. The previous Chinese ice-breaker R/V Xuelong does not have the capability to carry a long piston corer and instead has been using a rather short (< 8 m) gravity sampler to collect core sediment. The length of the collected cores is limited to about 4 to 6 m because of the lower recovery rates of gravity corers. On July 11, 2019, R/V Xuelong 2 was officially delivered to the Ministry of Natural Resources and joined the polar expedition sequence of China, which was equipped with a 22-m-long giant piston corer, and start her virgin Antarctic and Arctic voyages later. Two high-quality sediment cores over 18 m long were recovered and sediment recovery was more than 80%. This instrument greatly increases our ability to collect long high-quality sediment cores during polar scientific expeditions.

Key words: R/V Xuelong 2, icebreaker, sediments, giant piston corer, polar