Holocene lake level variations of Longmu Co, western Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Liu, Xiang-Jun1 ; Madsen, David B.2; Liu, Ruiyuan1; Sun, Yongjuan1; Wang, Yixuan1
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| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 75期号:4 |
| 关键词 | Western Qinghai-tibetan Plateau Paleoshorelines Lake Level Variations Luminescence Dating Radiocarbon Dating |
| 文献子类 | Article |
| 英文摘要 | Longmu Co is surrounded by conspicuous regressive shorelines attesting to high-water levels in the past. In this study, we dated paleoshoreline sediments around the lake using optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL) and radiocarbon dating, then explored the forces that drove Holocene lake level variations. We found that: (1) OSL/ IRSL ages are consistent with geomorphic sequences and some extant cosmogenic and U/Th shoreline ages. However, inorganic evaporite crust 14 C ages are much older than corresponding OSL/IRSL ages due to varying lake reservoir effects and should be used with caution; (2) The highest lake levels of Longmu Co (similar to 160-145 m above present) lasted from similar to 12.8 to similar to 11.3 ka. Two periods of abrupt lake level declines occurred at similar to 11.3 and similar to 7.4 ka (lake level dropped similar to 44 and similar to 45 m, respectively), with a gradual regression of similar to 18 m between these two intervals. The lake expanded moderately from similar to 7 to 5.5 ka, then declined once more after similar to 5.5 ka, with this regression accelerating during the last similar to 1.5 ka; (3) The deglacial lake level transgression was likely due to glacier melt waters. The Indian Summer Monsoon reached the Longmu Co watershed and brought precipitation during the early Holocene. Middle to late Holocene lake regression was caused by the retreat of the monsoon and consequent environmental deterioration. |
| WOS关键词 | REGENERATIVE-DOSE PROTOCOL ; PALEOENVIRONMENTAL IMPLICATIONS ; MONSOON VARIABILITY ; AEOLIAN SEDIMENTS ; SOUTHERN TIBET ; ASIAN MONSOON ; TANGRA YUMCO ; SUMXI CO ; ICE CORE ; LUMINESCENCE |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000371393400024 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/6301]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖地质与环境实验室 中国科学院青海盐湖研究所 |
| 作者单位 | 1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Lanzhou Univ, Res Sch Arid Environm & Climate Change, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiang-Jun,Madsen, David B.,Liu, Ruiyuan,et al. Holocene lake level variations of Longmu Co, western Qinghai-Tibetan Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(4). |
| APA | Liu, Xiang-Jun,Madsen, David B.,Liu, Ruiyuan,Sun, Yongjuan,&Wang, Yixuan.(2016).Holocene lake level variations of Longmu Co, western Qinghai-Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,75(4). |
| MLA | Liu, Xiang-Jun,et al."Holocene lake level variations of Longmu Co, western Qinghai-Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 75.4(2016). |
入库方式： OAI收割
来源：青海盐湖研究所
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