Re-evaluation of Sr/Ca ratio in coral skeletons as a proxy for temperature
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- INOUE Mayuri
- Graduate School of Science, Tohoku University:(Present address) Geological Survey of Japan, AIST
Bibliographic Information
- Other Title
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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
- オンド シヒョウ ト シテ ノ サンゴ コッカク チュウ ノ Sr Caヒ ヘンドウ ニ カンスル サイコウサツ
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Abstract
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 δ18O, indicator of both SST and seawater δ18O, 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.
Journal
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- Chikyukagaku
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Chikyukagaku 40 (3), 209-219, 2006
The Geochemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680718262144
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- NII Article ID
- 110008680126
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- NII Book ID
- AN00141280
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- ISSN
- 21885923
- 03864073
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- NDL BIB ID
- 8077412
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed
