| 浅析130ka以来柴达木盆地东南部沉积物色度记录的古气候意义 |
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| 引用本文： | 陈宗颜. 浅析130ka以来柴达木盆地东南部沉积物色度记录的古气候意义[J]. 青海师范大学学报(自然科学版), 2011, 27(4): 34-39 |
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| 作者姓名： | 陈宗颜 |
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| 作者单位： | 青海师范大学生命与地理科学学院,青海西宁,810008 |
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| 摘 要： | 本文通过柴达木盆地东南部沉积物的色度L＊、a＊和b＊值与有关地球化学指标的相关关系分析,探讨了沉积物色度的古气候意义,并据此分析了130kaB.P.以来该区的古气候演变过程.结果表明,L＊值高时,气候冷干;反之,气温上升,湿度增加;高a＊值反映气温较高,高b＊值反映湖水浅且氧化作用强.柴达木盆地东南部沉积物色度曲线反映的气候变化特征与其他的气候指标曲线相吻合.
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| 关 键 词： | 柴达木盆地 色度 古气候 |
Paleoclimatic Significance of Sediment Chorma in Southeast of Qaidam Basin since 130KaB.P. |
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| CHEN Zong-yan. Paleoclimatic Significance of Sediment Chorma in Southeast of Qaidam Basin since 130KaB.P.[J]. Journal of Qinghai Normal University(Natural Science Edition), 2011, 27(4): 34-39 |
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| Authors: | CHEN Zong-yan |
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| Affiliation: | CHEN Zong-yan(Biology & Geography College of Qinghai Normal University,Xining 810008,China) |
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| Abstract: | The paper discuss the significance of sediments chroma to paleoclimate research,then analysis pleoclimatic change since 130KaB.P.in southeast of Chaidam area,through correlationship of sediments L*、a*and b* and geochemical index.Result shows that L* is high when environment cold and dry,while L* is low when environment is warm and humid.Besides,a* is high when the environment is warm.b* is high when lake is shallow and strong oxidation.The curve of chroma could be compared with other paleoclimate curves. |
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| Keywords: | Chaidam Basin Chroma Plaeoclimate |
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