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The content and distribution of Ge in the sediments of Prydz Bay, Antarctica

【标题】The content and distribution of Ge in the sediments of Prydz Bay, Antarctica

【Title】The content and distribution of Ge in the sediments of Prydz Bay, Antarctica

【DOI】10.3724/SP.J.1085.2013.00113

【作者】 沈忱; 孙维萍; 张海生; 扈传昱

【Author】 Shen Chen ; Sun Weiping ; Zhang Haisheng ; Hu Chuanyu

【期刊】极地研究

【Journal】ADVANCES IN POLAR SCIENCE

【期刊年份】2013

【卷】24

【期】2

【关键词】 Ge; sediment; Prydz Bay; Southern Ocean

【Keywords】 Ge; sediment; Prydz Bay; Southern Ocean

【摘要】 The content and distribution of Ge is investigated in sediments from the Southern Ocean (Prydz Bay, Antarctica). The content of Getotal in the sediments ranges from 1.14×10-6 to 2.35×10-6 (average of 1.71×10-6) and the highest value occurs at station P3-9 where water depth is > 1 000 m. The lowest value occurs at station P4-13 which is near the edge of the Amery ice shelf. The surface sediments have 16%–68% Gebio within Getotal. The distribution trends of Gebio and Getotal are generally similar, and the values outside Prydz Bay are higher than within the bay, bounded at 67°S. The vertical distribution of Ge in sediment cores presents higher values at the surface than in underlying sediments. Values of Gebio appear to positively correlate with biogenic silica (BSiO2) in surface sediments from non-polynyas sea. The vertical distribution of Gebio and BSiO2 is similar in sediments of station P3-16.

【Abstract】The content and distribution of Ge is investigated in sediments from the Southern Ocean (Prydz Bay, Antarctica). The content of Getotal in the sediments ranges from 1.14×10-6 to 2.35×10-6 (average of 1.71×10-6) and the highest value occurs at station P3-9 where water depth is > 1 000 m. The lowest value occurs at station P4-13 which is near the edge of the Amery ice shelf. The surface sediments have 16%–68% Gebio within Getotal. The distribution trends of Gebio and Getotal are generally similar, and the values outside Prydz Bay are higher than within the bay, bounded at 67°S. The vertical distribution of Ge in sediment cores presents higher values at the surface than in underlying sediments. Values of Gebio appear to positively correlate with biogenic silica (BSiO2) in surface sediments from non-polynyas sea. The vertical distribution of Gebio and BSiO2 is similar in sediments of station P3-16.

【基金/项目】 南大洋普里兹湾生物硅的生产、溶解、沉降及其保存机制研究 ; 南极普里兹湾微量元素沉积地层记录及其来源、通量和浮游植物群落的生态响应 ; 南极环境综合分析与评价 ; 南极周边海域海洋化学与碳通量考察 ; 极地对全球和我国气候变化影响的综合评价

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