| 兰州地区古气候变化的奇怪吸引子研究 |
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| 引用本文： | 周亚军,陈虎.兰州地区古气候变化的奇怪吸引子研究[J].兰州大学学报(自然科学版),1997,33(1):120-123. |
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| 作者姓名： | 周亚军 陈虎 |
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| 作者单位： | [1]兰州大学地理科学系 [2]陕西省棣花中学 |
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| 基金项目： | 国家教委优秀中青年教师基金,重点跟踪调查基金 |
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| 摘 要： | 利用兰州九洲台黄土剖面磁化率资料分析了古气候变化的混沌特性。结果表明，该地区．４Ｍａ以来的古气候具有有限个自由工的复杂系统，吸引子的关联维数为４．３，饱和度嵌入维数为１２。．
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| 关 键 词： | 古气候 吸引子 浑沌 黄土地层 兰州市 |
Study on Strange Attractors of Palaeoclimatic Variations since 1 4 Ma B.P. in Lanzhou Region |
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| Zhou Yajun,Chen Fahu.Study on Strange Attractors of Palaeoclimatic Variations since 1 4 Ma B.P. in Lanzhou Region[J].Journal of Lanzhou University(Natural Science),1997,33(1):120-123. |
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| Authors: | Zhou Yajun Chen Fahu |
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| Abstract: | The nonlinear characteristics of palaeoclimatic variations of Lanzhou have been studied in this paper by using the chaotic method. The time series is 1 4 Ma, while the time interval is 500 years with 2 801 sample points. The calculated results show the palaeoclmatic evolution in Lanzhou is a complex chaotic system with finite degrees of freedom. The association embedded dimension attractor is 4 3, while the saturation dimension is 12. |
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| Keywords: | palaeoclimate chaotic system association dimension |
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