Non-climatic signal in ice core records: lessons from Antarctic megadunes

Non-climatic signal in ice core records: lessons from Antarctic megadunes
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冰芯记录中的非气候信号：南极巨型沙丘的教训

DOI：
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发表时间：
2015
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影响因子：
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通讯作者：
A. Turkeev
A. Turkeev
中科院分区：
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文献类型：
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作者：
A. Ekaykin;L. Eberlein;V. Lipenkov;S. Popov;M. Scheinert;L. Schröder;A. Turkeev

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抽象。我们介绍了在第58次，第59次和第60次俄罗斯南极考察（2013年1月至2015年）期间实施的位于东方站以东30公里（南极洲中东部）的巨型区域的冰川调查结果。在GPS精密测高和探地雷达（GPR）测量的基础上，沿沿着2 km长的大丘脊剖面测量了积雪累积速率和同位素（δD、δ 18 O和δ 17 O）含量。结果表明，积雪和同位素含量的空间变异性与地面坡度存在协变关系。积累率在距离内有规律地变化1个数量级
Abstract. We present the results of glaciological investigations in the megadune area located 30 km to the east of Vostok Station (central East Antarctica) implemented during the 58th, 59th and 60th Russian Antarctic Expedition (January 2013–2015). Snow accumulation rate and isotope content (δD, δ18O and δ17O) were measured along the 2 km profile across the megadune ridge accompanied by precise GPS altitude measurements and ground penetrating radar (GPR) survey. It is shown that the spatial variability of snow accumulation and isotope content covaries with the surface slope. The accumulation rate regularly changes by 1 order of magnitude within the distance