有关沙丘移动的线性回归方程式

有关沙丘移动的线性回归方程式

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Initial contribute: 2018-12-04

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岳天祥编著
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有关沙丘移动的线性回归方式

1)风速和通过丘顶气流中的输沙量关系:

               

 式中,Q为输沙量;V为风速。

       2)风速和沙丘背风坡坡麓前移值的关系:

                

 式中,Q为输沙量;V为风速。

       3)在同一风速、同一性质地面的条件(指沙子机械组成、湿润情况及植物被覆程度等)下,沙丘的前移速度仍有差异,这种差异乃是受沙丘本身形态发育规模大小的影响,而形态发育规模的大小可以用沙丘长度(L)、宽度(W)与高度(H)三个形态示量指标来加以表示,根据若干典型地区实测的结果,它们相互之间成直线相关,其回归方程如下:

在皮山西南裸露平坦少砾地面上的新月形沙丘为:

         

   在莎车布古里沙漠东南具有亚黏土的沙土平原上的新月形沙丘为:

         

 

参考文献:

   朱震达,郭恒文,吴功成:塔克拉玛干沙漠西南地区绿洲附近沙丘移动的研究。地理学报,1964,301

 

 

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《资源环境数学模型手册》 (2018). 有关沙丘移动的线性回归方程式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/a8d210a4-2ec6-4daf-99ae-ab65ba37d9a2
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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 modifier
zhengzhong
Last modify time
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