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Abstract ▼ AI-Helper

Numerous studies about global climatic changes, oceanic environmental changes and regional poilu-tion over the past were conducted. This study focused on concentration of geochemical elements of coral skeletons, and reviewed in terms of the previous studies of Earth climatic changes and local oceani...

Numerous studies about global climatic changes, oceanic environmental changes and regional poilu-tion over the past were conducted. This study focused on concentration of geochemical elements of coral skeletons, and reviewed in terms of the previous studies of Earth climatic changes and local oceanic pollution, and of possibility for developing proxies. Numerous studies for the climatic changes of the Earth and local pollution were conducted during the past two or three decades, and it is still continuously conducted to investigate the changes of sea surface temperature, precipitation using oxygen isotope and trace element concentrations of coral skeleton. Especially, coral has a distinctive annual band, and thus it can be used for high resolution study. Also it is a very useful material in studying seasonal variations of climatic changes and global environmental changes as well as local environmental changes such as pollution. Therefore, coral skeletons are one of the most confidential tools in tracking past global environmental changes and regional pollution. However, it is necessary to develop prudent pretreatment methods before analysis because geochemical contents can be easily contaminated. Further studies are necessary for the con-tinuous development of new proxies and for the accurate evaluation of environmental changes using coral skeletons.

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