| 西太平洋马尔库斯-威克海山区沉积物中生物硅含量分布 |
| |
| 引用本文： | 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. |
| |
| 作者姓名： | 孟凡盛 倪建宇 姚旭莹 |
| |
| 作者单位： | 自然资源部第二海洋研究所,浙江杭州310012;国家海洋局海底科学重点实验室,浙江杭州310012;自然资源部第二海洋研究所,浙江杭州310012;国家海洋局海底科学重点实验室,浙江杭州310012;自然资源部第二海洋研究所,浙江杭州310012;国家海洋局海底科学重点实验室,浙江杭州310012 |
| |
| 基金项目： | 中国大洋矿产资源研究与开发专项基金资助(DY135-S1-1-08) |
| |
| 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 |
| 收稿时间： | 2019-03-18 |
Biogenic silica content and distribution in deep sea sediments at Marcus-Wake Seamounts area in the western Pacific Ocean |
| |
| 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. |
| |
| Authors: | MENG Fan-sheng NI Jian-yu YAO Xu-ying |
| |
| Institution: | 1. Second Institute of Oceanography, MNR, Hangzhou 310012, China;2. Key Laboratory of Submarine Geosciences, SOA, Hangzhou 310012, China |
| |
| 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. |
| |
| Keywords: | western Pacific Ocean biogenic silica sediments |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《海洋学研究》浏览原始摘要信息 |
| 点击此处可从《海洋学研究》下载免费的PDF全文 |
|
