Ice-wedge casts showing climatic change since the late pleistocene in the source area of the Yellow River, northeast Ribet
文献类型：期刊论文
| 作者 | Cheng Jie ; Zhang Xujiao ; Tian Mingzhong ; Yu Wenyang ; Yu Jiangkuan ; Tang Dexiang ; Yue Jianwei |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2005-09 |
| 卷号 | 2期号:3页码:193–201 |
| 关键词 | Ice-wedge cast Paleoclimate Last Glacial Age Megathermal the source area of the Yellow River Tibetan Plateau |
| ISSN号 | 1672-6316 |
| 通讯作者 | Cheng J |
| 英文摘要 | The source area of the Yellow River is located in the northeastern Tibetan Plateau, and is a high-elevation region with the annual mean temperature of −3.9°C. The ice-wedge casts discovered in this region are recognized as two types. One was found in sandy gravel beds of the second terrace of the Yellow River. This ice-wedge cast is characterized by higher ratio of breadth/depth, and are 1–1.4 m wide and about 1 m deep. The bottom border of the ice-wedge cast is round arc in section. Another discovered in the pedestal of the second terrace has lower ratio of width/depth, and is 0.3–1.0 m wide and 1–2 m deep. Its bottom border is sharp. Based on the TL dating, the former was formed at the middle Holocene (5.69 ± 0.43 ka BP and 5.43 ± 0.41 ka BP), that is, the Megathermal, and the latter was formed at the late Last Glacial Maximum (13.49 ± 1.43 ka BP). Additionally, the thawing-freezing folders discovered in the late Late Pleistocene proluvium are 39.83 ± 3.84 ka BP in age. The study on the ice-wedge casts showed that the air temperature was lowered by up to 6–7°C in the source area of the Yellow River when the ice-wedge casts and thawing-freezing folds developed. |
| 语种 | 英语 |
| 公开日期 | 2013-08-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6149]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2005_Vol2 No.3 |
| 推荐引用方式 GB/T 7714 | Cheng Jie,Zhang Xujiao,Tian Mingzhong,et al. Ice-wedge casts showing climatic change since the late pleistocene in the source area of the Yellow River, northeast Ribet[J]. JOURNAL OF MOUNTAIN SCIENCE,2005,2(3):193–201. |
| APA | Cheng Jie.,Zhang Xujiao.,Tian Mingzhong.,Yu Wenyang.,Yu Jiangkuan.,...&Yue Jianwei.(2005).Ice-wedge casts showing climatic change since the late pleistocene in the source area of the Yellow River, northeast Ribet.JOURNAL OF MOUNTAIN SCIENCE,2(3),193–201. |
| MLA | Cheng Jie,et al."Ice-wedge casts showing climatic change since the late pleistocene in the source area of the Yellow River, northeast Ribet".JOURNAL OF MOUNTAIN SCIENCE 2.3(2005):193–201. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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