西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布

孟凡盛; 倪建宇; 姚旭莹

doi:10.3969/j.issn.1001-909X.2019.04.006

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海洋学研究 ›› 2019, Vol. 37 ›› Issue (4) : 60-67. DOI: 10.3969/j.issn.1001-909X.2019.04.006

研究论文

西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布

孟凡盛^1,2, 倪建宇^*1,2, 姚旭莹^1,2

作者信息 +

Biogenic silica content and distribution in deep sea sediments at Marcus-Wake Seamounts area in the western Pacific Ocean

MENG Fan-sheng^1,2, NI Jian-yu^*1,2, YAO Xu-ying^1,2

Author information +

文章历史 +

摘要

分析了大洋40航次在西太平洋马尔库斯-威克海山区山间海盆采集的表层沉积物中生物硅和有机质的含量,并对其分布特征和来源进行了初步的研究。结果表明,马尔库斯-威克海山区附近海域深海表层沉积物中生物硅含量总体较低,含量在0.88%～12.41%之间,平均含量为2.19%,分布上呈现西南含量高,向东北方向递减的趋势;深海表层沉积物中有机碳含量较低,δ¹³C同位素组成分布与生物硅相同。沉积物柱状样的研究表明研究区在过去的100～200 ka期间表层水体中硅质生物的初级生产力是逐渐增加的。

Abstract

In this study, the content of bio-silicon and organic matter in the surface sediments were analyzed, which were collected by the Ocean 40 voyage in the mountain basin of the Marcus-Wick Sea area in the western Pacific, and the preliminary research on its distribution characteristics and sources were also conducted. The results show that the content of bio-silicon in the deep sea surface sediments near the Marcus-Wicker Sea area is generally low, ranging from 0.88% to 12.41%, with an average content of 2.19%. The distribution shows a high content in the southwest and a diminishing trend toward the northeast. The content of organic carbon in the surface sediments is low, and the distribution of δ¹³C is the same as that of bio-silicon. Sediment core studies show that the primary production of siliceous organisms in the surface waters of the study area during the past 100-200 ka is gradually increasing.

导出引用

孟凡盛, 倪建宇, 姚旭莹. 西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布[J]. 海洋学研究. 2019, 37(4): 60-67 https://doi.org/10.3969/j.issn.1001-909X.2019.04.006

MENG Fan-sheng, NI Jian-yu, YAO Xu-ying. Biogenic silica content and distribution in deep sea sediments at Marcus-Wake Seamounts area in the western Pacific Ocean[J]. Journal of Marine Sciences. 2019, 37(4): 60-67 https://doi.org/10.3969/j.issn.1001-909X.2019.04.006

中图分类号： P736.4

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