Patterns and frequencies of the East Asian winter monsoon variations during the past million years revealed by wavelet and spectral analyses
文献类型：期刊论文
| 作者 | Lu, HY; Zhang, FQ; Liu, XD |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2003-01 |
| 卷号 | 35期号:1-2页码:67-74 |
| 关键词 | east Asian palaeomonsoon Pleistocene epoch wavelet analysis Chinese loess |
| DOI | 10.1016/S0921-8181(02)00136-4 |
| 文献子类 | Article |
| 英文摘要 | The wavelet and spectral analyses are used to investigate the variations of patterns and frequencies of the East Asian winter monsoon system during the past million years. Grain size of the loess-paleosol deposit at the central Chinese Loess Plateau is employed as a proxy indicator of the winter monsoon strength. On the bases of palaeomagnetic dates and a sedimentation rate model, an absolute, not orbitally tuned time scale for the loess deposit is developed. Wavelet analyses on this time series show that the patterns and frequencies of the East Asian winter monsoon climate vary with time during the past million years. The wavelet analyses also revealed a shift of climatic pattern from predominantly quasi-200- to quasi-100-ka cycle at around 500 ka BP which is also supported by previous studies using the sedimentation rate analysis as well as paleosol observations. Traditional spectral analysis on the same time series shows that the East Asian winter monsoon changes at Milankovich cycles, but there are also cycles which may not be related to orbital forcing. The predominant 41-ka cycle identified from previous studies is not evident in this time series from both wavelet and spectral analyses. Our results present new evidence that not only solar radiation, but also other boundary conditions, may have forced the monsoon system changes at the 104 105 years time scale. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physical Geography ; Geology |
| WOS关键词 | CHINESE LOESS PLATEAU ; TIME-SCALE ; MAGNETIC-SUSCEPTIBILITY ; CLIMATE ; DUST ; DEPOSITS ; LUOCHUAN ; SERIES ; RECORD ; OCEAN |
| WOS研究方向 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000179712400005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.ieecas.cn/handle/361006/11996]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Lu, HY,Zhang, FQ,Liu, XD. Patterns and frequencies of the East Asian winter monsoon variations during the past million years revealed by wavelet and spectral analyses[J]. GLOBAL AND PLANETARY CHANGE,2003,35(1-2):67-74. |
| APA | Lu, HY,Zhang, FQ,&Liu, XD.(2003).Patterns and frequencies of the East Asian winter monsoon variations during the past million years revealed by wavelet and spectral analyses.GLOBAL AND PLANETARY CHANGE,35(1-2),67-74. |
| MLA | Lu, HY,et al."Patterns and frequencies of the East Asian winter monsoon variations during the past million years revealed by wavelet and spectral analyses".GLOBAL AND PLANETARY CHANGE 35.1-2(2003):67-74. |
入库方式： OAI收割
来源：地球环境研究所
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