timng of the last glacial maximum from observed sea level minima
文献类型：期刊论文
| 作者 | Yusuke Yokoyama ; Kurt Lambeck ; Patrick De Deckker ; Paul Johnston ; L.Keith Fifield |
| 刊名 | nature
 |
| 出版日期 | 2000 |
| 卷号 | 406页码:713-716 |
| 关键词 | Glacial Periods Ice Ages Land Ice Time Measurement Geochronology Sea Level Radioactive Age Determination Gulfs Australia |
| 英文摘要 | During the Last Glacial Maximum, ice sheets covered large areas in northern latitudes, and global temperatures were significantly lower than today. But few direct estimates exist of the volume of the ice sheets, or the timing and rates of change during their advance and retreat. Here we analyze four distinct sediment facies in the shallow, tectonically stable Bonaparte Gulf, Australia - each of which is characteristic of a distinct range in sea level - to estimate the maximum volume of land-based ice during the last glaciation and the timing of the initial melting phase. We use faunal assemblages and preservation status of the sediments to distinguish open marine, shallow marine, marginal marine and brackish conditions, and estimate the timing and the mass of the ice sheets using radiocarbon dating and glacio-hydroisostatic modelling. Our results indicate that from at least 22,000 to 19,000 (calendar) years before present, land-based ice volume was at its maximum, exceeding today's grounded ice sheets by 52.5 x 10 exp 6 cu km. A rapid decrease in ice volume by about 10 percent within a few hundred years terminated the Last Glacial Maximum at 19,000 +/- 250 years. |
| 公开日期 | 2011-01-07 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/3164]  |
| 专题 | 烟台海岸带研究所_科研共享资源 |
| 推荐引用方式 GB/T 7714 | Yusuke Yokoyama,Kurt Lambeck,Patrick De Deckker,et al. timng of the last glacial maximum from observed sea level minima[J]. nature,2000,406:713-716. |
| APA | Yusuke Yokoyama,Kurt Lambeck,Patrick De Deckker,Paul Johnston,&L.Keith Fifield.(2000).timng of the last glacial maximum from observed sea level minima.nature,406,713-716. |
| MLA | Yusuke Yokoyama,et al."timng of the last glacial maximum from observed sea level minima".nature 406(2000):713-716. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。