期刊
JOURNAL OF HYDROLOGY
卷 362, 期 3-4, 页码 234-246出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhydrol.2008.08.027
关键词
Time domain reflectmetry; TDR; Hydrogeophysics; ERT; Archie's Law; Vadose zone
资金
- US Department of Education
- Virginia Water Resources Research Center
- Cave Conservancy Foundation
- Cave Research Foundation
- National Speleological Society
- Geological Society of America
- West Virginia Association for Cave Studies
- Virginia Tech
Electrical resistivity imaging (ERI) and time domain reflectometry (TDR) were used to simultaneously measure resistivity and soil moisture at an experimental field site with the objective of quantifying soil moisture in 2D unsaturated zone profiles (>40 m long and 9 m deep). With a time-series data set and a modified form of Archie's Law, we used bulk conductivity derived from ERI models of soil resistivity, pore water conductivity derived using an exchangeable cation proxy (Ca + Mg), and percent clay content of soils, to convert 2D ERI profiles into 2D soil moisture profiles. We optimized the model using 1D access-tube time domain reflectometry (TDR) derived soil moisture measurements. Results show that this approach can be used to quantify soil moisture in heterogeneous soils, and thus provides a useful method for measuring 2D soil moisture at a variety of field sites and scales. (C) 2008 Elsevier BN. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据