Paleomagnetic excursions recorded in the Yanchi Playa in middle hexi corridor, NW China since the last interglacial
文献类型：期刊论文
| 作者 | Yang Taibao ; Yu Yongtao ; Li Jijun ; An Congrong ; Liu Jinfeng ; Zhang Junyan |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2004-08 |
| 卷号 | 1期号:2页码:128–142 |
| 关键词 | Paleomagnetism geomagnetic excursion the Late Pleistocene arid Northwestern China |
| ISSN号 | 1672-6318 |
| 通讯作者 | Yang TB |
| 英文摘要 | Paleomagnetic determinations on lithological profiles of two paralleled long drilling cores covering the past 130 kyr B.P., GT40 and GT60, from the Yanchi Playa in the arid Northwestern China, indicate that a series of pronounced paleomagnetic excursions have been documented. By correlating our results with published regional and worldwide reports, 4 excursion events out of 10 apparent reversal signals (labeled from GT-1 to GT-10) were identified as excursion events coeval with the Mono Lake Event (28.4 kyr–25.8 kyr), Laschamp Event (43.3 kyr–40.5 kyr), Gaotai Event (82.8 kyr–72.4 kyr) and the Blake Event (127.4 kyr–113.3 kyr), respectively. GT-9 correlates with the above-mentioned Gaotai Event, GT-7 and GT-6 correspond to two stages of the Laschamp Event and GT-5 to the Mono Lake Event. It is noteworthy that the so-called Gaotai Event has not been reported as a pronounced paleomagnetic excursion in the Northwestern China. Every magnetic excursion event corresponds to paleointensity minima, anteceding those established abrupt paleoclimatic change events, such as the Younger Drays and the Heinrich Events (H1–H6). Here, we tentatively propose that these geomagnetic excursions/reversals can be viewed as precursors to climate abruptness. During the transitional stages when the earth’s magnetic field shifted between a temporal normal and a negative period, the earth’s magnetic paleointensity fell correspondingly to a pair of minima. Although more precise chronology and more convincing rock magnetic parameter determinations are essentially required for further interpretation of their intricate coupling mechanism, these results may have revealed, to some extent, that the earth’s incessantly changing magnetic field exerts an strong influence on the onset of saw-tooth shaped abrupt climate oscillations through certain feedback chains in arid Central Asia or even North Hemispheric high latitude regions. |
| 语种 | 英语 |
| 公开日期 | 2013-08-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6174]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2004_Vol1 No.2 |
| 推荐引用方式 GB/T 7714 | Yang Taibao,Yu Yongtao,Li Jijun,et al. Paleomagnetic excursions recorded in the Yanchi Playa in middle hexi corridor, NW China since the last interglacial[J]. JOURNAL OF MOUNTAIN SCIENCE,2004,1(2):128–142. |
| APA | Yang Taibao,Yu Yongtao,Li Jijun,An Congrong,Liu Jinfeng,&Zhang Junyan.(2004).Paleomagnetic excursions recorded in the Yanchi Playa in middle hexi corridor, NW China since the last interglacial.JOURNAL OF MOUNTAIN SCIENCE,1(2),128–142. |
| MLA | Yang Taibao,et al."Paleomagnetic excursions recorded in the Yanchi Playa in middle hexi corridor, NW China since the last interglacial".JOURNAL OF MOUNTAIN SCIENCE 1.2(2004):128–142. |
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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