Interpretation of Paleoenvironmental Signals Recorded in Polar Ice(<Special Issue>Environmental Problem and Crystal Growth)
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- Goto-Azuma Kumiko
- National Institute of Polar Research
Bibliographic Information
- Other Title
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- 極地の氷に記録された地球環境変動史の解読(<小特集>環境問題と結晶成長)
- 解説 極地の氷に記録された地球環境変動史の解読
- カイセツ キョクチ ノ コオリ ニ キロク サレタ チキュウ カンキョウ ヘンドウシ ノ カイドク
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Abstract
Ice sheets and glaciers have been accumulating snow, and atmospheric gases and aerosols since they built up. It has been recognized that ice-core chemical records provide invaluable information on past climate and atmosphere. However, due to a lack of understanding of air to snow transfer and post-depositional processes of chemical substances, interpretation of ice-core chemical records could be misleading. Large amounts of chemical data have not been properly interpreted. It is essential to understand those processes to avoid the misinterpretation, and to obtain the maximum information from ice-core chemical records. Ice-core chemical records are affected by many processes: (1) large-scale transport of chemical constituents from tropical and mid-latitude (as well as high latitude) sources to polar regions; (2) cloud scavenging processes; (3) wet and dry deposition processes and their relative contributions; (4) post-depositional processes such as re-emission of chemical constituents from the snow, sublimation/ evaporation, redistribution by winds, melting and re-freezing, diffusion and chemical reactions within the snow, firn and ice . This paper reviews evidence of post-depositional changes found in polar snow, firn and ice, such as changes due to wind scouring, nitrate losses, movement of methane sulfonic acid (MSA), etc.
Journal
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- Journal of the Japanese Association for Crystal Growth
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Journal of the Japanese Association for Crystal Growth 28 (2), 77-84, 2001
The Japanese Association for Crystal Growth
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Details 詳細情報について
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- CRID
- 1390282680839343872
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- NII Article ID
- 110002715457
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- NII Book ID
- AN00188386
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- ISSN
- 21878366
- 03856275
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- NDL BIB ID
- 5823330
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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