A study on concentration variations of greenhouse gases in ancient air using ice core analysis 氷床コア分析による過去の温室効果気体濃度の変遷に関する研究
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著者
書誌事項
- タイトル
-
A study on concentration variations of greenhouse gases in ancient air using ice core analysis
- タイトル別名
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氷床コア分析による過去の温室効果気体濃度の変遷に関する研究
- 著者名
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町田, 敏暢
- 著者別名
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マチダ, トシノブ
- 学位授与大学
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東北大学
- 取得学位
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博士 (理学)
- 学位授与番号
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甲第4717号
- 学位授与年月日
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1993-03-25
注記・抄録
博士論文
目次
- Abstract / (0003.jp2)
- Acknowledgements / (0006.jp2)
- Chapter.1.General Introduction. / p1 (0009.jp2)
- Chapter 2.Experimental Procedures / p8 (0016.jp2)
- 2.1.Introduction / p9 (0017.jp2)
- 2.2.Instruments and methods / p9 (0017.jp2)
- 2.3.Precision of measurements and air extraction efficiency of the dry system / p14 (0022.jp2)
- 2.4.Effect of evacuation time of ice sample on the CO₂ and CH₄ concentrations / p18 (0026.jp2)
- Chapter 3.Concentration Variations of Greenhouse Gases in the Holocene / p29 (0037.jp2)
- 3.1.Introduction / p30 (0038.jp2)
- 3.2.Descriptions of the Mizuho ice core / p31 (0039.jp2)
- 3.3.Dating of air occluded in the Mizuho core / p32 (0040.jp2)
- 3.4.Variations of the CO₂,CH₄ and N₂O concentrations between 9000 and 3000 years BP / p33 (0041.jp2)
- 3.5.Variations of the CO₂,CH₄ and N₂O concentrations over the last 750 years / p37 (0045.jp2)
- Chapter 4.Concentration Variations of Greenhouse Gases in the Glacial Period / p59 (0067.jp2)
- 4.1.Introduction / p60 (0068.jp2)
- 4.2.Descriptions of South Yamato core / p61 (0069.jp2)
- 4.3.Concentration variations of CO₂, CH₄ and N₂O in the glacial period / p62 (0070.jp2)
- 4.4.Variations of δ¹³C in CO₂ during the glacial period / p66 (0074.jp2)
- 4.5.Age estimation of air in South Yamato ice core / p69 (0077.jp2)
- Chapter.5.CH₄ concentration differences between northern and southern high latitudes in pre-industrial/pre-agricultual era / p85 (0093.jp2)
- 5.1.Introduction / p86 (0094.jp2)
- 5.2.Descriptions of Site J ice core / p87 (0095.jp2)
- 5.3.Variations of the CH₄ concentration in the Arctic region and their comparison with those from the Antarctic ice cores / p88 (0096.jp2)
- Chapter.6.Detailed concentration variations of greenhouse gases in industrial/agricultural era / p101 (0109.jp2)
- 6.1.Introduction / p102 (0110.jp2)
- 6.2.Descriptions of H15 ice core / p103 (0111.jp2)
- 6.3.Variations of the CO₂ concentration and δ¹³C value over the last 250 years / p104 (0112.jp2)
- 6.4.Variations of the CH₄ concentration over the last 250 years / p108 (0116.jp2)
- 6.5.Variations of the N₂O concentration over the last 250 years / p111 (0119.jp2)
- 6.6.CO₂ emission estimated using a carbon cycle model and atmospheric CO₂ concentration data for the past 250 years / p113 (0121.jp2)
- References / p134 (0142.jp2)