期刊
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
卷 64, 期 2, 页码 469-477出版社
SOIL SCI SOC AMER
DOI: 10.2136/sssaj2000.642469x
关键词
-
类别
Single photon emission computed tomography (SPECT) is an imaging technique that is widely used in medical diagnosis. This technique has never been applied to soils. The objective of this study was to investigate the capabilities of SPECT scanning for visualizing preferential flow in soil. This paper describes the principle of SPECT scanning and its application to tracer breakthroughs in four large undisturbed soil columns (800-mm length x 77-mm diam.). This new approach allows real-time analysis of flow patterns of radioactive tracers in 2-D using planar imaging, and in 3-D using the tomographic capabilities of the SPECT scanner. Not only does SPECT scanning provide qualitative data, but it also allows for the quantification of a tracer's spatial distribution. Our results chararterized preferential now very clearly in soil columns. SPECT scanning opens up ne,v avenues for 2-D and 3-D tracer studies in porous media such as soils.
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