始新世以来地球轨道偏心率的演化VARIATION OF ECCENTRICITY OF EARTH ORBIT SINCE THE EOCENE
尹志强,韩延本,徐道一,姚益民,韩永刚
摘要(Abstract):
地球轨道要素的变化已作为确定地质年表的一种重要依据。应用地球轨道参数变化理论计算值来进行小波分析,结果清楚地展示出偏心率值约100ka、405ka、1Myr和2.3Myr等周期成份的随时间变化特征,100ka和405ka周期的振幅强度的变化成反相位关系,2.3Myr周期对100ka和405ka周期成份有调制作用。0—51Ma范围内变化较为稳定的地球轨道偏心率值的变化分析可以为地质年龄的划分和对比提供一定的参考。
关键词(KeyWords): 地球轨道偏心率;小波分析;地质时代;古近纪;新近纪;第四纪
基金项目(Foundation): 国家自然科学基金项目(No10373017)资助
作者(Author): 尹志强,韩延本,徐道一,姚益民,韩永刚
DOI: 10.19839/j.cnki.dcxzz.2007.s2.004
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