Determination of liquid water content and dielectric constant in porous media by the capacitive method

2004 ◽  
Vol 332 (8) ◽  
pp. 639-645 ◽  
Author(s):  
Teddy Fen-Chong ◽  
Antonin Fabbri ◽  
Jean-Pierre Guilbaud ◽  
Olivier Coussy
Keyword(s):  
Dielectric Constant ◽  
Porous Media ◽  
Water Content ◽  
Liquid Water ◽  
Liquid Water Content ◽  
Capacitive Method

Determination of cloud liquid water content using the SSM/I

1990 ◽  
Vol 28 (5) ◽  
pp. 817-822 ◽  
Author(s):  
J.C. Alishouse ◽  
J.B. Snider ◽  
E.R. Westwater ◽  
C.T. Swift ◽  
C.S. Ruf ◽  
...  
Keyword(s):  
Water Content ◽  
Liquid Water ◽  
Liquid Water Content ◽  
Cloud Liquid Water ◽  
Cloud Liquid Water Content

scholarly journals Measurements of Daily Variations in the Subsurface Wetness Gradient

1985 ◽  
Vol 6 ◽  
pp. 254-255
Author(s):  
A. Denoth ◽  
A. Foglar
Keyword(s):  
Dielectric Constant ◽  
Water Content ◽  
Liquid Water ◽  
Field Measurements ◽  
Liquid Water Content ◽  
Strip Line ◽  
Snow Surface ◽  
Dielectric Sensor ◽  
Different Depths ◽  
Destructive Measurement

A flat condenser in strip-line technique has been developed to measure the gradient in liquid water content near the snow surface. This dielectric sensor is connected to a twin-T-bridge with an operating frequency of 27 MHz. The special design of the sensor allows the non-destructive measurement of the mean dielectric constant of underlying material at two different depths of 0 to 2 cm, and of 2 to 4 cm below the snow surface. Based on the model of Polder and van Santen, changes in the gradient of liquid water content can be calculated from measured changes in the dielectric constant in different depths; the density has to be measured separately. Results of measurements of wetness gradient with this flat capacitative sensor are given. Field measurements have been carried out in the Stubai Alps (3100 m a.s.1.) and at the Hafelekar (2256 m a.s.l.) near Innsbruck.

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