The Use of Radar Methods to Determine Moisture Content in the Vadose Zone

Knight, Rosemary

Stanford University

关键词: Radar;    Permittivity;    54 Environmental Sciences;    Transport;    Moisture;   

DOI  :  10.2172/833526
RP-ID  :  EMSP-70115--2001
RP-ID  :  FG07-00ER15118
RP-ID  :  833526

美国|英语

来源: UNT Digital Library

【 摘 要 】

Moisture content is a critical parameter affecting both liquid-phase and vapor-phase contaminant transport in the vadose zone. The objective of our three-year research project is to determine the optimal way to use of radar methods--both surface and borehole--as a noninvasive means of determining in situ moisture content. In our research we focus on two specific aspects of the link between radar images and moisture content. The first question we address is: Can we use a measure of the dielectric constant of a volume of the subsurface to determine the moisture content of that volume? The second question we address is: Can we use the radar data to characterize the spatial variability in moisture content?