温度指標としてのサンゴ骨格中のSr/Ca比変動に関する再考察(<特集>炭酸塩の地球化学)
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概要
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Components in biogenic carbonates have been recognized to be attractive tools for reconstructing past oceanographic and climatic changes. Although chemical components in coral aragonite are precipitated away from equilibrium, fluctuations of Sr/Ca ratio in coral skeletons have been empirically considered to be controlled by temperature. Thus, Sr/Ca ratio in coral skeletons has been applied for paleoclimate reconstruction. Recently, coupled measurements of coral skeletal δ^<18>O, indicator of both SST and seawater δ^<18>O, and Sr/Ca ratio are used to reconstruct seawater salinity as well as SST. On the other hand, it has been reported that Sr/Ca is also affected by growth rate of coral skeleton besides SST. However, the impact of skeletal growth rate on Sr/Ca ratio is a matter of debate and controversial results have been reported at the present. In this review, recent progress of studies on the topics and a mechanism of growth rate-related Sr/Ca variation based on a physiological model are summarized.
- 日本地球化学会の論文
- 2006-08-25
著者
関連論文
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- 温度指標としてのサンゴ骨格中のSr/Ca比変動に関する再考察
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- 産総研地球化学標準物質JCp-1(サンゴ),JCt-1(シャコガイ)の共同分析結果(サンゴ年輪と低緯度の海洋環境)
- 温度指標としてのサンゴ骨格中のSr/Ca比変動に関する再考察(炭酸塩の地球化学)