Subsurface water mass variations in the Kuroshio region inferred from 14C age difference of planktic foraminifers with different depth habitat

不同深度栖息地浮游有孔虫14C年龄差异推断黑潮地区地下水质量变化

• 批准号: 22654061
• 负责人: IKEHARA Minoru
• 金额: $ 1.83万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22654061/
• 关键词: 14C年代差; 環境変動; 気候変動; 有孔虫; 黒潮; 亜熱帯循環; 浮遊性有孔虫

The differences in^<14> C age andδ^<18> O between surface and subsurface planktic foraminifers are reconstructed at the piston cores from the Kuroshio region and the subtropical gyre in the Northwest Pacific. Although there is no systematic difference of^<14> C ages during the Holocene,^<14> C age differences exceeding 1000 years are clearly observed in the sediment cores during the last deglaciation and the last glacial maximum(LGM). To establish an age model of marine core in the Northwest Pacific, it necessary to measure^<14> C age only using a surface water species.

本文<14>利用<18>西北太平洋黑潮区和副热带环流区的活塞样，重建了表层和次表层南极有孔虫的^ C年龄和δ^ O差异。虽然全新世的^ C年龄没有系统差异<14>，但<14>末次冰消期和末次盛冰期（LGM）的沉积物柱样中的^ C年龄差异明显超过1000年。为了建立西北太平洋海洋岩芯的年龄模型，必须<14>仅用一种表层水样品测定^ C年龄。

项目成果

Millennial-scale variability of the Kuroshio based on oxygen and carbon isotopes of planktonic foraminifera

基于浮游有孔虫氧和碳同位素的黑潮千年尺度变化

• 发表时间: 2010
• 作者: Ikehara;M.
• 通讯作者: M.