Reconstruction of Tropical Glacial Ocean by Coral Band

珊瑚带重建热带冰川海洋

• 批准号: 10041107
• 负责人: KAYANNE Hajime
• 金额: $ 7.87万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10041107/
• 关键词: coral annual band; paleoceanography; glacial stage; tropical ocean; Palau Islands; Australia; oxygen stable isotope; 酸素同位対比; 古海洋

To understand the conditions of coral reef formation during the glacial times, echo-sounding research was conducted on fore-reef landforms in Palau Islands. Basic environmental conditions in Palau Islands, Micronesia and the Great Barrier Reefs were obtained : temporal/spatial changes in sea surface temperature and salinity, and the relation between these environmental factors and annual band proxies were investigated. Temperature and salinity since January, 1998 have been monitored in Palau Islands, Micronesia. We made transect surveys on temperature and salinity in the lagoon. Sea water has been sampled from the lagoon every half month.The newly introduced mass spectrometry with an auto-carbonate device has been tested for its accuracy and precision. At Australian National University, we communicated with the researchers on coral annual band analysis. We investigated the procedures for stable isotope and trace metal analysis at this University. Their field is southwest Pacific and our field is northwest Pacific and we discussed the possible telteconnections between the two areas.

为了了解冰川时期珊瑚礁形成的条件，对帕劳群岛的前雷夫地貌进行了回声研究。获得了帕劳群岛，密克罗尼西亚和大屏障礁的基本环境条件：海面温度和盐度的时间/空间变化，这些环境因素与年度带代理之间的关系得到了研究。自1998年1月以来的温度和盐度已在密克罗​​尼西亚的帕劳群岛进行监测。我们对泻湖的温度和盐度进行了横切调查。每半个月从泻湖中采样了海水。新近引入的质谱法使用自动碳酸盐装置进行了测试。在澳大利亚国立大学，我们与珊瑚年度乐队分析的研究人员进行了交流。我们研究了该大学的稳定同位素和痕量金属分析的程序。他们的领域是西南太平洋地区，我们的领域是西北太平洋地区，我们讨论了这两个地区之间可能的telteconections。