基于分形方法的古温度推算公式和粒度分析

基于分形方法的古温度推算公式和粒度分析

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Initial contribute: 2018-12-04

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岳天祥编著
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yue@lreis.ac.cn
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基于分形方法的古温度推算公式和粒度分析

 

(1)  古温度推算公式:

 

 

式中,为年平均气温;的值;为常数;为分数维,其计算公式可表达为:

 

 

 

 

式中,分别为时间序列的极差和标准差;为时间序列的采样间隔时段;为常数;Hurst指数。

 

(2)  粒度分析:

 

1)粒度分布关系式:

 

 

式中,为粒径小于的颗粒数目;为分数维;为常数;为颗粒直径。

 

2)粒度分数维计算公式:

 

 

式中,分别为样品中粒径为的两组颗粒的质量;为样品的总质量。

 

参考文献

朱诚:分形方法在庐山第四纪沉积环境研究中的应用。地理研究,1996,153

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《资源环境数学模型手册》 (2018). 基于分形方法的古温度推算公式和粒度分析, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/c9352de7-1446-4fec-bc71-24e2887c98cd
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Initial contribute : 2018-12-04

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岳天祥编著
:  
yue@lreis.ac.cn
:  
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Last modify time
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