| Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir'pa Co, southeastern Tibet | |
| Bird, BW (Bird, Broxton W.)1; Lei, YB (Lei, Yanbin)2,3; Perello, M (Perello, Melanie)1; Polissar, PJ (Polissar, Pratigya J.)4; Yao, TD (Yao, Tandong)2,3; Finney, B (Finney, Bruce)5; Bain, D (Bain, Daniel)6; Pompeani, D (Pompeani, David)6; Thompson, LG (Thompson, Lonnie G.)7; Bird, BW | |
| Source Publication | HOLOCENE
 |
| 2017 | |
| Volume | 27Issue:4Pages:541-552 |
| DOI | 10.1177/0959683616670220 |
| Abstract | Sedimentological and geochemical results from Nir'pa Co, an alpine lake on the southeastern Tibetan Plateau, detail late-Holocene Indian summer monsoon (ISM) hydroclimate during the last 3300 years. Constrained by modern calibration, elevated silt and lithics and low sand and clay between 3.3 and 2.4 ka and 1.3 ka and the present indicate two pluvial phases with lake levels near their current overflow elevation. Between 2.4 and 1.3 ka, a sharp increase in sand and corresponding decrease in lithics and silt suggest drier conditions and lower lake levels at Nir'pa Co. Hydroclimate expressions in the sedimentological proxies during the Medieval Climate Anomaly (MCA) and Little Ice Age' (LIA) are not statistically significant, suggesting that these events were minor compared to the millennial scale variability on which they were superimposed. However, decreasing sand and increasing lithics and silt during the MCA between 950 and 800 cal. yr BP may suggest briefly wetter conditions, while increasing sand and reduced lithics and silt from 500 to 200 cal. yr BP suggest potentially drier conditions during the LIA. Similarities with regional records from lake sediment and ice cores and speleothem records from the central and eastern Tibetan Plateau, India, and the Arabian Sea, suggest generally coherent late-Holocene ISM variability in these regions. Increased late-Holocene ISM intensity occurred during times when Tibetan Plateau surface air temperatures were warmer, Indo-Pacific sea surface temperatures were elevated, and the tropical Pacific was in a La Nina-like mean state. Conversely, aridity between 2.4 and 1.3 ka occurred in concert with cooling on the Tibetan Plateau and in the Indo-Pacific with more El Nino-like conditions in the tropical Pacific. Differences with western Tibetan records may reflect a weakened ISM and stronger westerlies in this region during the late-Holocene. |
| Subject Area | 自然地理学 |
| WOS ID | WOS:000400198600005 |
| Language | 英语 |
| Indexed By | SCI |
| Keyword | TROPICAL PACIFIC-OCEAN LAST 2 MILLENNIA EL-NINO ENVIRONMENTAL-CHANGES ASIAN MONSOON ICE-AGE NAM-CO PLATEAU CLIMATE RAINFALL |
| WOS Research Area | Physical Geography; Geology |
| WOS Subject | Geography, Physical; Geosciences, Multidisciplinary ; Physical Geography; Geology |
| Cooperation Status | 国际 |
| Subtype | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/8303 |
| Collection | 图书馆 |
| Corresponding Author | Bird, BW |
| Affiliation | 1.Indiana Univ Purdue Univ, Dept Earth Sci, 723 W Michigan SL 118, Indianapolis, IN 46202 USA. 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China. 3.CAS Ctr Excellence Tibetan Plateau Earth Syst, Beijing, Peoples R China. 4.Columbia Univ, Lamont Doherty Earth Observ, New York, NY 10027 USA. 5.Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA. 6.Univ Pittsburgh, Dept Geol & Environm Sci, Pittsburgh, PA 15260 USA. 7.Ohio State Univ, Byrd Polar Res Ctr, Columbus, OH 43210 USA. |
| Recommended Citation GB/T 7714 | Bird, BW ,Lei, YB ,Perello, M ,et al. Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir'pa Co, southeastern Tibet[J]. HOLOCENE,2017,27(4):541-552. |
| APA | Bird, BW .,Lei, YB .,Perello, M .,Polissar, PJ .,Yao, TD .,...&Bird, BW.(2017).Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir'pa Co, southeastern Tibet.HOLOCENE,27(4),541-552. |
| MLA | Bird, BW ,et al."Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir'pa Co, southeastern Tibet".HOLOCENE 27.4(2017):541-552. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| V.27(4) 541-552 2017（746KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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