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| DOI | 10.1126/science.1121235 |
| Late quaternary atmospheric CH4 isotope record suggests marine clathrates are stable | |
| Sowers T. | |
| 发表日期 | 2006 |
| ISSN | 0036-8075 |
| 起始页码 | 838 |
| 结束页码 | 840 |
| 卷号 | 311期号:5762 |
| 英文摘要 | One explanation for the abrupt increases in atmospheric CH4, that occurred repeatedly during the last glacial cycle involves clathrate destabalization events. Because marine clathrates have a distinct deuterium/hydrogen (D/H) isotope ratio, any such destabilization event should cause the D/H ratio of atmospheric CH4 (δDCH4) to increase. Analyses of air trapped in the ice from the second Greenland ice sheet project show stable and/or decreasing δDCH4 values during the end of the Younger and Older Dryas periods and one stadial period, suggesting that marine clathrates were stable during these abrupt warming episodes. Elevated glacial δDCH4 values may be the result of a lower ratio of net to gross wetland CH4 emissions and an increase in petroleum-based emissions. |
| 英文关键词 | Atmospheric composition; Deuterium; Ice; Wetlands; Air trapping; Destabilization; Marine clathrates; Warming; Methane; deuterium; hydrogen; isotope; methane; petroleum; clathrate; gas hydrate; methane; paleoatmosphere; Quaternary; air pollution; article; atmospheric dispersion; geological time; glacier; greenhouse effect; marine environment; priority journal; wetland |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/245569 |
| 作者单位 | Department of Geosciences, Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA 16802, United States |
| 推荐引用方式 GB/T 7714 | Sowers T.. Late quaternary atmospheric CH4 isotope record suggests marine clathrates are stable[J],2006,311(5762). |
| APA | Sowers T..(2006).Late quaternary atmospheric CH4 isotope record suggests marine clathrates are stable.Science,311(5762). |
| MLA | Sowers T.."Late quaternary atmospheric CH4 isotope record suggests marine clathrates are stable".Science 311.5762(2006). |
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