新华社“雪龙”号８月１４日电（记者 璩静）１４日，中国第五次北极科学考察队在北大西洋冰岛附近海域开展以海洋地质学为主的海洋调查。这不仅是我国极地科考史以及海洋调查史上首次在北大西洋开展科学调查，也是我国首次与环北极国家进行古海洋学合作研究。

    The xinhua news agency“photo”Th August 14 dec（Reporter Qu static）14，China's fifth arctic science expedition in the north Atlantic waters around Iceland to Marine geology mainly in ocean survey。This not only is our country the polar expedition history and ocean survey for the first time in history in the north Atlantic conducting scientific investigation，China is the first with ring on the arctic national oceanography cooperative research。

    经冰岛政府批准，这次海洋调查作业包括４个站点的海底沉积物采样和海洋水文环境调查，主要考察冰岛海域地质历史时期中大尺度高分辨率沉积记录、火山灰地层学、陆地冰川形成和分布等内容，旨在通过这些记录揭示北冰洋地区古气候事件。

    The Icelandic government for approval，The ocean survey assignments include four site under the sea sampling and Marine sediments hydrological environment survey，Main investigation the waters off Iceland geological period cuhk scale high resolution sedimentary record、Ash stratigraphy、Continental glacial formation and distribution, etc，Aims to these records reveal the arctic climate events。

    科考队还将在冰岛海域航路上开展海水温度盐度、大气化学、浮游植物、重力测量等常规性走航观测。采集样品以及数据和后续研究处理等将与冰岛海洋研究机构联合进行。

    The expedition will be in the waters off Iceland on route in sea temperature and salinity、Atmospheric chemistry、phytoplankton、Gravity measurements routine go air observation。Collecting samples and data and subsequent research treatment with Iceland Marine research institutions will be joint。

    “冰岛是一个冰川和火山活动比较典型的国家，这些活动往往会记录在沉积物的地层中，获取冰岛附近海域地层岩芯有助于提高我们对北冰洋地区气候变化认知的精准度，”第五次北极科考队首席科学家马德毅说。

    “Iceland is a glacier and volcanic activity more typical of the country，These activities will often record of strata in sediments，Get near Iceland formation core to improve our waters of the arctic region climate change for accuracy of cognition，”The fifth the arctic expedition's chief scientists MaDeYi said。

    他说，开展冰岛与中国古气候变化对比研究、北冰洋太平洋扇区与大西洋扇区海洋环境对比研究、冰岛近海海域洋中脊岩石学和地球化学研究，对加强中冰两国海洋学家合作，拓展两国在极地与海洋领域的研究具有重要的现实意义。

    He said，In Iceland, and Chinese ancient climate change comparative study、The Pacific and Atlantic sector sector arctic ocean Marine environment comparative study、Iceland coastal waters of ridges petrology and geochemical study，To strengthen the ice in the two countries oceanographer cooperation，The two countries in the development of research in the field of ocean polar and has an important practical significance。

    北大西洋通过海冰形成时析出的高盐度海水下沉而形成深层水并驱动了全球大洋环流。北大西洋深层水通过长途流动，最后在北太平洋以上升流形式回到海面，完成大洋深层水循环。这一环流过程被形象地比喻为“大洋传送带”，影响着全球气候变化，而北大西洋被比喻为这条传送带上的“开关”。

    The north Atlantic sea ice formed by the high salinity water separation sinking deep water formed and drive the global ocean circulation。The north Atlantic deep water through the long distance flow，Finally in the north Pacific Ocean upwelling regions to form back to the sea，Complete the ocean deep water cycle。The circulation process is the image of the parable for“Ocean conveyor belt”，Influence on the global climate change，And the north Atlantic compared to this one on the conveyor belt“switch”。

    据专家介绍，作为北大西洋暖流和寒冷极地流的交汇海域，冰岛附近海域是“大洋传送带”发生变异的敏感海域，也是全球气候变化研究的重点海域。

    According to expert introduction，As warm and cold in the north Atlantic sea of polar flow intersection，Iceland nearby sea area is“Ocean conveyor belt”From the change of sensitive waters，Global climate change is also the focus of research waters。