权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Basic analytical procedure for Antarctic shallow ice cores

南极浅冰芯的基本分析程序

基本信息

批准号：
12680537
负责人：
FURUKAWA Teruo
金额：
$ 2.3万
依托单位：
Natiomal Institute of Polar Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680537/
关键词：
clmatic change deposititional regime Anarctic ice sheet ice core physical analysis chemical analysis firn high time resolution 南極氷床雪氷コア極域氷床温室効果ガス

项目摘要

In this study, we finished basic analysis of cores from H 231 (obtained in 1980, 90m in length) in the coastal region, from MD 364 (obtained in 2001, 80m in length) and from the south of Dome Fuji (obtained in 1997, 56m in length), in the Antarctic ice sheet. By basic analysis, we did the measurements of stratigraphy, density, the degree of depth hoar, electrical conductivity and the oxygen isotope ratio and chemical analysis and radioisotope analysis (tritium). In addition, we did high time resolution analysis of chemical major constituents as study analysis about H 72 core. In H 72 core, seasonal variation from ECM (solid electrical conductivity) was decided by an error of degree with extracting a season change of ion concentration in the core continually by putting stratum structure together in addition to the average surface mass balance for past 26 years. Climatic and environmental changes for several hundred years past become possible. And a change or seasonal variation can be re-constructed by high time resolution year by year.

在这项研究中，我们完成了南极冰盖中H231(1980年获得，长度为90m)、MD364(2001年获得，长度为80m)和富士穹顶以南(1997年获得，长度为56m)冰芯的基本分析。通过基础分析，进行了地层、密度、深度灰化程度、电导率、氧同位素比值、化学分析和放射性同位素分析(氚)的测量。此外，作为对H72岩心的研究分析，我们还进行了化学主要成分的高时间分辨分析。在H72岩心，除了过去26年的平均表面质量平衡外，通过将地层结构组合在一起，连续提取岩心离子浓度的季节变化，从而决定了固体电导率(ECM)的季节变化是由程度误差决定的。过去几百年的气候和环境变化成为可能。年际变化或季节变化可以通过高时间分辨率进行重建。