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

Knight, R.

Technical Information Center Oak Ridge Tennessee

关键词: Moisture content;    Water content;    Radar;    Permittivity;    Subsurface characterization;   

RP-ID  :  DE2004833525

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The objective of our three-year research project is to determine the optimal way to use radar methods to obtain information about moisture content in the vadose zone. In our research we will focus on two specific aspects of the link between radar images and moisture content. The first aspect or 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 involved specifically with the issue of spatial heterogeneity. Rather than using radar data to get estimates of moisture content at specific locations, can we use the radar data to directly obtain information about the way in which the level of moisture content varies spatially.