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A sensor for water flux in soil. “Point source” instrument
Author(s) -
Byrne G. F.,
Drummond J. E.,
Rose C. W.
Publication year - 1967
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr003i004p01073
Subject(s) - flux (metallurgy) , asymmetry , calibration , mechanics , heat flux , flow (mathematics) , point (geometry) , point source , environmental science , measure (data warehouse) , soil science , materials science , physics , optics , heat transfer , mathematics , geometry , computer science , metallurgy , quantum mechanics , database
The theoretical analysis and laboratory calibration of a sensor to measure fluid flux in soil or other porous medium shows that a flow velocity of 10 −4 cm sec −1 can be readily measured, and that sensor output is uniquely related to flux. The flow to be measured causes asymmetry in the temperature field,generated by an approximation to a point source of heat located centrally in the instrument. The temperature difference due to this asymmetry gives rise to the output of the instrument.