Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079303 |
Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid-Pleistocene Transition | |
Koutsodendris, Andreas1; Sachse, Dirk2; Appel, Erwin3; Herb, Christian3; Fischer, Tobias1; Fang, Xiaomin4; Pross, Joerg1 | |
2018-12-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:23页码:13020-13030 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Peoples R China |
英文摘要 | Paleohydrological data comprising pollen assemblages and leaf-wax hydrogen isotopes (dDwax) from paleolake sediments in the Qaidam Basin (China) provide evidence for a link between increased moisture availability on the Tibetan Plateau and global cooling during the Mid-Pleistocene Transition. Notably, they document the persistence of humid and cold conditions during Marine Isotope Stages 24-22 (936-866 ka) suggesting that boundary conditions favorable for extended glaciation on the Tibetan Plateau first developed at similar to 900 ka. Our dDwax results indicate a strong influence of proximal (monsoonal) moisture sources during that glacial, in agreement with the intensification of the interhemispheric moisture transport resulting from Antarctic ice volume increase at similar to 900 ka. The consistency of our results with other marine and terrestrial climate data sets suggests that extended glaciation on the Tibetan Plateau may have initiated similar to 500 ka earlier than previously assumed, implying that midlatitude ice sheets actively contributed to global cooling during the Mid-Pleistocene Transition. Plain Language Summary The Mid-Pleistocene Transition (MPT) marks an intensification of global cooling associated with an expansion of Earth's ice sheets. The Tibetan Plateau-today the most extensively glaciated region outside the high latitudes-may have played a pivotal role in this process. However, because its glaciation history is yet poorly constrained, testing this hypothesis has remained difficult. Here we assess the climatic boundary conditions for glacier development on the Tibetan Plateau during the MPT using pollen and organic biomarker data from paleolake sediments (Qaidam Basin, China). Our results suggest a link between increased moisture availability on the Tibetan Plateau and global cooling during Marine Isotope Stages 24-22. We infer that favorable conditions for extended glaciation on the Tibetan Plateau first developed at similar to 900 ka, that is, similar to 500 ka earlier than previously assumed, suggesting that ice sheet formation on the Tibetan Plateau indeed played an active role in global cooling during the MPT. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454296600042 |
WOS关键词 | WESTERN QAIDAM BASIN ; RESOLUTION POLLEN RECORD ; DRILL CORE SG-1 ; CLIMATE-CHANGE ; ANTARCTIC CLIMATE ; HYDROGEN ISOTOPES ; LAKE ELGYGYTGYN ; CENTRAL-ASIA ; ICE VOLUME ; PLEISTOCENE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25457 |
专题 | 气候变化 |
作者单位 | 1.Heidelberg Univ, Inst Earth Sci, Paleoenvironm Dynam Grp, Heidelberg, Germany; 2.GFZ German Res Ctr Geosci, Geomorphol, Potsdam, Germany; 3.Univ Tubingen, Dept Geosci, Tubingen, Germany; 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Koutsodendris, Andreas,Sachse, Dirk,Appel, Erwin,et al. Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid-Pleistocene Transition[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(23):13020-13030. |
APA | Koutsodendris, Andreas.,Sachse, Dirk.,Appel, Erwin.,Herb, Christian.,Fischer, Tobias.,...&Pross, Joerg.(2018).Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid-Pleistocene Transition.GEOPHYSICAL RESEARCH LETTERS,45(23),13020-13030. |
MLA | Koutsodendris, Andreas,et al."Prolonged Monsoonal Moisture Availability Preconditioned Glaciation of the Tibetan Plateau During the Mid-Pleistocene Transition".GEOPHYSICAL RESEARCH LETTERS 45.23(2018):13020-13030. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论