The Effect of Depth-dependent Hydraulic Conductivity on Regional Groundwater Flow
Distribution of hydraulic conductivity is critical for modeling of regional groundwater flow.Unfortunately,few studies on regional groundwater flow have accounted for the gradual decrease in hydraulic conductivity with depth.Following Freeze and Witherspoons (1967) study,the distribution of hydraulic head and resulted flow systems in a synthetic basin under a series of different rates of hydraulic conductivity which decreases with depth are obtained by using MODFLOW and PMPATH.It is found out that the development of flow systems varies greatly with decrease factor of hydraulic conductivity.With an increase in decrease factor of hydraulic conductivity,the penetration depth of local flow systems would increase.Furthermore,the decrease in hydraulic conductivity with depth would also have effect on the total recharge amount.Therefore,to analyze hydrologic problems which are related to regional groundwater flow,the gradual decrease in hydraulic conductivity with depth should not be neglected.
Hydraulic conductivity Depth-dependence Regional groundwater flow Penetration depth
Xiao-wei JIANG Li WAN Xu-sheng WANG
School of Water Resources and Environment,China University of Geosciences,Beijing 100083,P.R.China
国际会议
The 2nd China-Japan Graduate Student Forum -- Life, Environment and Energy (第二届中日研究生论坛--生命,环境与能源)
北京
英文
395-399
2009-09-24（万方平台首次上网日期，不代表论文的发表时间）