西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布

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

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

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

1.自然资源部第二海洋研究所,浙江杭州 310012;
2.国家海洋局海底科学重点实验室,浙江杭州 310012

收稿日期:2019-03-18 修回日期:2019-05-30 出版日期:2019-12-15 发布日期:2022-11-10
通讯作者: *倪建宇(1969-),男,研究员,主要从事海洋地球化学和海洋环境化学研究。E-mail: jianyuni@sio.org.cn
作者简介:孟凡盛(1992-),男,山东东营市人,主要从事海洋地质地球化学研究。E-mail:fansheng92@gmail.com
基金资助:
中国大洋矿产资源研究与开发专项基金资助(DY135-S1-1-08)

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

1. Second Institute of Oceanography, MNR, Hangzhou 310012, China;
2. Key Laboratory of Submarine Geosciences, SOA, Hangzhou 310012, China

Received:2019-03-18 Revised:2019-05-30 Online:2019-12-15 Published:2022-11-10

摘要/Abstract

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。

关键词: 西太平洋, 生物硅, 沉积物

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.

Key words: western Pacific Ocean, biogenic silica, sediments

中图分类号:

P736.4

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.

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.

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西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布

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

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