OSCILLATION PHENOMENA IN GRAVITY-DRIVEN DRAINAGE IN COARSE POROUS-MEDIA

被引：21
|
作者：
PRAZAK, J
SIR, M
KUBIK, F
TYWONIAK, J
ZARCONE, C
机构：
[1] CZECH TECH UNIV, DEPT BLDG PHYS, CS-16629 PRAGUE 6, CZECHOSLOVAKIA
[2] INST MECAN FLUIDES TOULOUSE, F-31071 TOULOUSE, FRANCE
[3] CZECH TECH UNIV, DEPT PHYS, CS-16635 PRAGUE 6, CZECHOSLOVAKIA
来源：
WATER RESOURCES RESEARCH | 1992年 / 28卷 / 07期
关键词：
D O I：
10.1029/92WR00748
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Correlations between rainfall amount and water content in coarse soils were studied. Situations were registered in which the intensity of the gravity-driven flow in the soil exhibited irregular oscillations which could not be explained within the scope of the standard Richards' theory. The problem was analyzed by means of a set of laboratory experiments. It seems that the observed global (macroscopic) oscillations can be qualitatively explained as a result of correlated behavior of the local (microscopic) flows. The search for a satisfactory quantitative description of those effects promises to be a field of useful and interesting research activities.
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页码：1849 / 1855
页数：7
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