Investigation of hydrogeologic processes in a dipping layer structure: 1. The flow barrier effect

被引：33
|
作者：
Alfnes, E
Kinzelbach, W
Aagaard, P
机构：
[1] Norwegian Water Resources & Energy Directorate, N-0301 Oslo, Norway
[2] Univ Oslo, Dept Geol, N-0316 Oslo, Norway
[3] ETH Honggerberg, Inst Hydromech & Water Resources Management, CH-8093 Zurich, Switzerland
来源：
JOURNAL OF CONTAMINANT HYDROLOGY | 2004年 / 69卷 / 3-4期
关键词：
numerical simulation; unsaturated flow; lateral diversion; layered soil;
D O I：
10.1016/j.jconhyd.2003.08.005
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Numerical simulations of a field experiment were performed in order to study the processes contributing to lateral diversion of water flow in the unsaturated zone. The experimental site is a glacial delta with dipping layers of alternating finer and coarser sand. Model soil physical parameters for each of the stratigraphic layers were estimated from soil grain size distributions. Anisotropy of the hydraulic conductivity within the layers was critical in order to reproduce the flow pattern observed in the experiment. Capillary and hydraulic barriers were of minor importance for the observed lateral diversion. (C) 2003 Elsevier B.V. All rights reserved.
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页码：157 / 172
页数：16
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