Progress of the microscale isotopic analytical technique of carbonate and the development of the new environmental proxy: changes from relative proxy to absolute proxy.

2016 Fiscal Year Final Research Report

• Project/Area Number: 25701002
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Ibaraki National College of Technology
• Principal Investigator: ISHIMURA Toyoho 茨城工業高等専門学校, 物質工学科, 准教授 (80422012)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: carbonate / 有孔虫 / 安定同位体比 / 環境指標 / 微量分析 / 炭酸塩 / 耳石 / MICAL3

Outline of Final Research Achievements

Through this project, I have successfully enhanced the field of application of microscale isotopic analytical technique (MICAL3) to: (1) High precision and high sensitive stable isotopic analysis by using customized CF/DI-IRMS system for IsoPrime100. (2) Stable carbon and oxygen isotopic dispersions of individual foraminifera: new proxy to estimate the sea environmental condition precisely. (3) High-resolution stable isotopic analysis of CaCO3 to clarify the life history recorded in fish otolith. (4) Clarifying the impact of the concentrated heavy rain to coastal area: the result of monitoring the fluctuations of stable oxygen isotope of seawater.

Free Research Field

安定同位体地球化学