-
- 鹿園 直建
- 慶應義塾大学理工学部応用化学科地球環境化学研究室
書誌事項
- タイトル別名
-
- Influence of Global Carbon Dioxide Cycle on Tertiary Climate Change.
- ダイ3キ キコウ ヘンドウ ニ タイスル グローバル 2サンカ タンソ ジュン
この論文をさがす
抄録
The geochemical and geological studies of climate change in the Tertiary age indicate that temperature is controlled by the combined processes of global CO2 cycle (weathering, hydrothermal-igneous activities, metamorphism), ocean circulation, albedo, and development of continental ice-sheet.<BR>The temperature change during the Tertiary age has been estimated from analytical data (paleontological data and oxygen isotope data on foraminifera), and computer simulations of the global CO2 cycle. The analytical studies indicate that the middle Miocene age (15-16 Ma) had the climatic optimum. This could be related to the increased rate of CO2 degassing, which was caused by intense hydrothermal-igneous activities at back arc basins, change of mode of plate subduction, and change of ocean circulation pattern. High temperatures in the early Tertiary age (Eocene) are considered to have been also related to CO2 degassing by intense hydrothermal, igneous, and metamorphic activities. The decrease of temperature since the middle Miocene age could have been caused by the combined processes of development of ice sheet, changes in ocean circulation patterns, and intense weathering rate related to the uplifting of the Himalayas.
収録刊行物
-
- 地学雑誌
-
地学雑誌 107 (3), 317-333, 1998
公益社団法人 東京地学協会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282679207408000
-
- NII論文ID
- 10002237966
-
- NII書誌ID
- AN00322536
-
- ISSN
- 18840884
- 0022135X
-
- NDL書誌ID
- 4510909
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可