Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.epsl.2013.08.041 |
Late Pleistocene glacial advances in the western Tibet interior | |
Amidon, William H.1; Bookhagen, Bodo2; Avouac, Jean-Philippe3; Smith, Taylor2; Rood, Dylan4 | |
通讯作者 | Amidon, William H. |
来源期刊 | EARTH AND PLANETARY SCIENCE LETTERS
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ISSN | 0012-821X |
EISSN | 1385-013X |
出版年 | 2013 |
卷号 | 381页码:210-221 |
英文摘要 | It has long been observed that the timing of glacial advances is asynchronous across the Himalaya-Karakoram-Tibet Plateau (HICTP) but the climatic implications, if any, remain unclear. Resolving this question requires additional glacial chronologies from unique spatial and climatic regimes as well as an analysis of how glaciers within different regimes are likely to have responded to past climate changes. This study presents a Be-10-Ne-21 chronology from the Mawang Kangri range of western Tibet (similar to 34 degrees N, 80 degrees E); an arid high-elevation site. We identify advances at similar to 123, 83, and 56 kyr, which agree reasonably well with sites in the immediate vicinity, but are asynchronous relative to sites across the entire HKTP, and relative to sites in the western HKTP. To evaluate HKTP-wide asynchroneity, we compile dated glacial chronologies and classify them by the approximate timing of their maximum recent advance. This result shows a strong spatial clustering of young (MIS 1-2) relative to older (MIS 3-5) maximum advances. Further comparison with modern precipitation, temperature, and topographic data show that the pattern of HKTP-wide asynchroneity is broadly independent of topography and can potentially be explained by local responses to changes in temperature at either very warm-wet or cold-dry sites. Sites that receive intermediate amounts of precipitation are more ambiguous, although spatial clustering of MIS 1-2 vs. MIS 3-5 advances is suggestive of past variations in precipitation at these sites. In western Tibet, no spatial or climatic correlation is observed with the timing of maximum glacial advances. We suggest this could arise from mis-interpretation of disparate boulder ages generated by a prolonged MIS-3/4 glacial advance in the western HKTP. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | cosmogenic Be-10 Ne-21 Tibet climate glacier |
类型 | Article |
语种 | 英语 |
国家 | USA ; Scotland |
收录类别 | SCI-E |
WOS记录号 | WOS:000327367800020 |
WOS关键词 | LATE QUATERNARY GLACIATION ; SURFACE EXPOSURE AGES ; INDIAN-SUMMER MONSOON ; COSMOGENIC BE-10 ; LANDSCAPE EVOLUTION ; CLIMATE VARIABILITY ; WINTER TEMPERATURE ; EROSION RATES ; MOUNT EVEREST ; CENTRAL-ASIA |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176623 |
作者单位 | 1.Middlebury Coll, Dept Geol, Middlebury, VT 05753 USA; 2.Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA; 3.CALTECH, Dept Geol & Planetary Sci, Pasadena, CA 91125 USA; 4.Scottish Univ Environm Res Ctr, Glasgow G12 8QQ, Lanark, Scotland |
推荐引用方式 GB/T 7714 | Amidon, William H.,Bookhagen, Bodo,Avouac, Jean-Philippe,et al. Late Pleistocene glacial advances in the western Tibet interior[J],2013,381:210-221. |
APA | Amidon, William H.,Bookhagen, Bodo,Avouac, Jean-Philippe,Smith, Taylor,&Rood, Dylan.(2013).Late Pleistocene glacial advances in the western Tibet interior.EARTH AND PLANETARY SCIENCE LETTERS,381,210-221. |
MLA | Amidon, William H.,et al."Late Pleistocene glacial advances in the western Tibet interior".EARTH AND PLANETARY SCIENCE LETTERS 381(2013):210-221. |
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