Geochemistry of dissolved rare earth elements in the Equatorial Pacific Ocean

被引：27

作者：

Wang, Zhong-Liang

Yamada, Masatoshi

机构：

[1] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Guizhou, Peoples R China

[2] Natl Inst Radiol Sci, Nakaminato Lab Marine Radioecol, Hitachi, Ibaraki 3111202, Japan

来源：

ENVIRONMENTAL GEOLOGY | 2007年 / 52卷 / 04期

基金：

日本学术振兴会;

关键词：

rare earth elements; Equatorial Pacific Ocean; vertical profiles; water mass tracers;

D O I：

10.1007/s00254-006-0515-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Seawater samples were collected from four locations in the Equatorial Pacific Ocean during the MR02-K06 cruise of the R/V Mirai and analyzed for dissolved rare earth elements (REEs) using inductively coupled plasma mass spectrometry. According to variations of REE concentrations and Yb/La ratios, the results show that the river input of the Papua New Guinea islands may affect the compositions of REEs in the Equatorial Pacific surface water. The Yb/La values and the REE concentrations in the waters deeper than 3,000 m in the western South Pacific and the Equatorial Pacific Oceans, which represent the characteristics of Antarctic Bottom Water (AABW), demonstrate similar variation trend with depth. This result also indicates that the REEs which originated from the South Pacific Ocean have entered the North Pacific Ocean across the equator with AABW intrusion.

引用

页码：779 / 787

页数：9

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