Studies of the Relationship between the Climatic Tempera- tures and the D/H and 13C/12C Ratios in Trees, with PossibleApplications for Retrieval of the Earth's Past Climates
研究气候温度与树木 D/H 和 13C/12C 比率之间的关系,以及反演地球过去气候的可能应用
基本信息
- 批准号:9219891
- 负责人:
- 金额:$ 24.99万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1993
- 资助国家:美国
- 起止时间:1993-05-01 至 1996-04-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award supports a project designed to establish the relationship between environmental temperature and the Deuterium/Hydrogen (D/H) ratio in unexchangeable hydrogen in cellulose extracted from trees from locations covering a wide range of climatic conditions. The project will ascertain to what degree factors other than temperature affect the Deuterium/Hydrogen (D/H) ratio. Among these might be humidity, growth history, the nature of the root system and its relationship to the source water used by the trees, and generally the relationship between the D/H ratio in cellulose and the hydrology of the area. The collecting sites are located in Oregon, California, and Manitoba, Canada. The resolution of these factors will allow the retrieval of climatic information from many trees from different locations. The Deuterium/Hydrogen records currently indicate unexpectedly that the rate of global warming is greater in the 19th century than in the 20th century. This is contrary to what is expected if global warming were directly related to the increase in atmospheric C02. The confirmation of this result is critical to our understanding of the role that C02 plays in affecting the earth's climate.
该奖项支持一个项目,该项目旨在建立环境温度与从覆盖广泛气候条件的地点的树木中提取的纤维素中不可交换氢中的重氢/氢(D/H)比率之间的关系。该项目将确定温度以外的因素在多大程度上影响氘/氢(D/H)比。其中可能包括湿度、生长历史、根系的性质及其与树木所用水源的关系,以及纤维素的D/H比与该地区水文之间的关系。收集地点位于加利福尼亚州俄勒冈州和加拿大马尼托巴省。这些因素的解决将允许从不同地点的许多树木中检索气候信息。目前的氢/氢记录出人意料地表明,19世纪全球变暖的速度比20世纪更大。这与如果全球变暖与大气中二氧化碳的增加直接相关的预期相反。这一结果的确认对于我们理解二氧化碳在影响地球气候中所起的作用至关重要。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Samuel Epstein其他文献
Towards a Multi-camera Mouse-replacement Interface
迈向多摄像头鼠标替代界面
- DOI:
- 发表时间:
2010 - 期刊:
- 影响因子:0
- 作者:
John J. Magee;Zheng Wu;Harshith Chennamaneni;Samuel Epstein;Diane H. Theriault;Margrit Betke - 通讯作者:
Margrit Betke
身体部位名詞の概念拡張と連語環境における意味分布の初期調査
扩展身体部位名词的概念并初步研究它们在搭配环境中的语义分布
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Koji Fujita;Cedric Boeckx;Antonio Benitez-Burraco;Gonzalo Castillo;Samuel Epstein;Naoki Fukui;Michio Hosaka;Masayuki Ike-uchi;Hironobu Kasai;Takaomi Kato;Evelina Leivada;Pedro Tiago Martins;Hiroki Narita;Kentaro Nakatani;Miki Obata;Hajime O;藤田耕司・福井直樹・遊佐典昭・池内正幸(編);寺田 寛;寺田 寛;寺田 寛;岡田禎之 - 通讯作者:
岡田禎之
名詞の語彙概念拡張に認められる非対称性
名词词汇概念扩展中观察到的不对称性
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
Koji Fujita;Cedric Boeckx;Antonio Benitez-Burraco;Gonzalo Castillo;Samuel Epstein;Naoki Fukui;Michio Hosaka;Masayuki Ike-uchi;Hironobu Kasai;Takaomi Kato;Evelina Leivada;Pedro Tiago Martins;Hiroki Narita;Kentaro Nakatani;Miki Obata;Hajime O;藤田耕司・福井直樹・遊佐典昭・池内正幸(編);寺田 寛;寺田 寛;寺田 寛;岡田禎之;寺田 寛;岡田禎之;寺田 寛;岡田禎之;岡田禎之;寺田 寛;岡田禎之;寺田 寛;Okada Sadayuki;岡田禎之 - 通讯作者:
岡田禎之
叙述文脈と連語文脈における概念拡張分布の相関について
规定语境和搭配语境中概念扩展分布的相关性
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
Koji Fujita;Cedric Boeckx;Antonio Benitez-Burraco;Gonzalo Castillo;Samuel Epstein;Naoki Fukui;Michio Hosaka;Masayuki Ike-uchi;Hironobu Kasai;Takaomi Kato;Evelina Leivada;Pedro Tiago Martins;Hiroki Narita;Kentaro Nakatani;Miki Obata;Hajime O;藤田耕司・福井直樹・遊佐典昭・池内正幸(編);寺田 寛;寺田 寛;寺田 寛;岡田禎之;寺田 寛;岡田禎之 - 通讯作者:
岡田禎之
Samuel Epstein的其他文献
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{{ truncateString('Samuel Epstein', 18)}}的其他基金
Experimental Investigations of the Partitioning of Oxygen Isotopes Between Vapor and Silicate Glasses and Melts at High Temperatures
高温下氧同位素在蒸气与硅酸盐玻璃及熔体之间分配的实验研究
- 批准号:
9303975 - 财政年份:1993
- 资助金额:
$ 24.99万 - 项目类别:
Standard Grant
Experimental Investigation of the Partitioning of Oxygen Isotopes Between Vapor and Silicate Glasses and Melts at High Temperatures
高温下氧同位素在蒸气与硅酸盐玻璃及熔体之间分配的实验研究
- 批准号:
9104833 - 财政年份:1991
- 资助金额:
$ 24.99万 - 项目类别:
Standard Grant
Oxygen, Hydrogen, Carbon, Silicon and Nitrogen Isotope Studies of Natural Occuring Materials
天然存在材料的氧、氢、碳、硅和氮同位素研究
- 批准号:
8504096 - 财政年份:1985
- 资助金额:
$ 24.99万 - 项目类别:
Continuing Grant
Oxygen, Hydrogen, Carbon, Silicon and Nitrogen Isotope Studies of Naturally Occurring Materials
天然存在材料的氧、氢、碳、硅和氮同位素研究
- 批准号:
8313086 - 财政年份:1984
- 资助金额:
$ 24.99万 - 项目类别:
Standard Grant
Climate Implications of Isotope Ratios in Tree Rings
树木年轮中同位素比率的气候影响
- 批准号:
8314144 - 财政年份:1984
- 资助金额:
$ 24.99万 - 项目类别:
Continuing Grant
Climatic Implications of the D/H, 13c/12c, 18o/16o In Tree Rings
D/H、13c/12c、18o/16o 对树木年轮的气候影响
- 批准号:
8018830 - 财政年份:1980
- 资助金额:
$ 24.99万 - 项目类别:
Continuing Grant
Climatic Implications of the D/H and 018/016 in the Tree Rings
D/H 和 018/016 对树木年轮的气候影响
- 批准号:
7819896 - 财政年份:1978
- 资助金额:
$ 24.99万 - 项目类别:
Continuing Grant
Oxygen, Hydrogen, Carbon, and Silicon Isotope Studies of Naturally Occurring Materials
天然材料的氧、氢、碳和硅同位素研究
- 批准号:
7816873 - 财政年份:1978
- 资助金额:
$ 24.99万 - 项目类别:
Continuing Grant
Oxygen, Hydrogen, Carbon, and Silicon Isotope Studies of Naturally Occurring Materials
天然材料的氧、氢、碳和硅同位素研究
- 批准号:
7622751 - 财政年份:1977
- 资助金额:
$ 24.99万 - 项目类别:
Standard Grant
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