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Characteristic of East Asia climatic changes and its synchronization with global climatic changes

东亚气候变化特征及其与全球气候变化的同步性

基本信息

批准号：
16310008
负责人：
KITAGAWA Hiroyuki
金额：
$ 10.05万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310008/
关键词：
ASIA CLIMATE CHANGE ENVIROMENTAL CHANGE ISOTOPE CHRONOLOGY 同時性地域差風成塵高分解能東南アジア

项目摘要

The aim of this research is to characterize the terrestrial climatic changes for three different spatial-scales of global, Asia, and East Asia. Major research subjects are as follows: (1) climate reconstruction in land region where enough climate change reconstruction is not done, (2) chronological matching among the records of climatic changes obtained from ocean, land and poles. The research has also developed the methods necessary for paleoenvironmental studies such as silicon and oxygen isotope analyses of the diatom fossil in lake sediment, the extraction method of the diatom fossil from the sediments and the isotope of lake sediment cellulose, which are thought to be effective as a climate change proxy. We have successfully developed new methods for determining the silicon and oxygen isotope changes of fossil diatom (laser- and batch methods), the carbon and radiocarbon isotope changes of lake sediment cellulose. These methods will be effective for investigating the terrestrial climatic changes. These R＆D will give the detailed information on terrestrial climatic changes for three different spatial-scales. It is remarked that the difference of the climate change pattern from the last glacial period to interglacial in the Atlantic Ocean region and the Pacific Ocean region were identified.

本研究的目的是描述全球、亚洲和东亚三个不同空间尺度的陆地气候变化。主要研究内容包括：（1）在气候变化重建工作不足的地区进行陆地气候重建;（2）海洋、陆地和极地气候变化记录的年代学匹配。该研究还开发了古环境研究所需的方法，如湖泊沉积物中硅藻化石的硅和氧同位素分析、沉积物中硅藻化石的提取方法和湖泊沉积物纤维素的同位素，这些方法被认为是有效的气候变化代用指标。我们已经成功地开发了新的方法，用于确定化石硅藻的硅和氧同位素变化（激光和批量方法），湖泊沉积物纤维素的碳和放射性碳同位素变化。这些方法将是研究陆地气候变化的有效方法。这些研究与开发将提供三种不同空间尺度的陆地气候变化的详细信息。指出了从末次冰期到间冰期，大西洋地区和太平洋地区气候变化模式的差异。