北京大学学报(自然科学版)

降水渗透过程分析及其对视电阻率的影响

宋晓磊,黄清华1   

  1. 北京大学地球与空间科学学院地球物理学系,北京,100871;1通讯作者,E-mail: huangq@pku.edu.cn
  • 收稿日期:2005-09-23 出版日期:2006-07-20 发布日期:2006-07-20

Rainfall Infiltration Process and Its Effect on Apparent Resistivity

SONG Xiaolei, HUANG Qinghua1   

  1. Department of Geophysics, School of Earth and Space Sciences, Peking University, Beijing, 100871; 1Corresponding Author, E-mail: huangq@pku.edu.cn
  • Received:2005-09-23 Online:2006-07-20 Published:2006-07-20

摘要: 采用一维非饱和地下水在重力作用下的不稳定运动模型,来模拟降水在土壤中的渗透过程。调整各种与渗流过程有关的物理参数以及考虑蒸发的影响,采用理论上的计算结果来解释降水在土壤中渗流达到稳定的过程。以昌黎台为例,采用褶积滤波和多元回归的方法来定量分析降雨对视电阻率的影响,为定量分析实际资料提供一定的参考依据。

关键词: 降水, 视电阻率, 干扰, 渗流, 褶积滤波

Abstract: A simple one-dimension model considering fluid movement in unsaturated soils is proposed to simulate the rainfall infiltration process and explain its possible effect on apparent resistivity of the Earth. A convolution filtering method is adopted to analyze rainfall effect on apparent resistivity. As a case study, the result of the Changli Station is reported. The study may provide information for the quantitative analysis of geoelectric observation data.

Key words: rainfall, apparent resistivity, noise, infiltration, convolution filtering

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