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Design and Performance of a Dynamic Gas Flux Chamber

^a Environmental Physics Dep., Israel Institute for Biological Research, P.O. Box 19, Ness-Ziona 74100, Israel
^b Land, Air and Water Resources, University of California, One Shields Ave., Davis, CA 95616

View larger version (24K): [in a new window]   Fig. 1. Schematic diagram of the flux chamber: (a) side view and (b) top view.

View larger version (18K): [in a new window]   Fig. 2. Experimental setup.

View larger version (41K): [in a new window]   Fig. 3. Distribution of air velocity in the chamber.

View larger version (23K): [in a new window]   Fig. 4. Fluxes measured in the chamber outlet vs. fluxes measured in source box and pressure deficits across the soil layer for v = 1.26 m/s and (a) Q = 30 L/min, (b) Q = 20 L/min, and (c) Q = 10 L/min.

View larger version (22K): [in a new window]   Fig. 5. Fluxes measured in the chamber outlet vs. fluxes measured in source box and pressure deficit across the soil layer for v = 1.15 m/s and (a) Q = 30 L/min, (b) Q = 20 L/min, and (c) Q = 10 L/min.

View larger version (23K): [in a new window]   Fig. 6. Fluxes measured in the chamber outlet vs. fluxes measured in source box and pressure deficit across the soil layer for v = 1.06 m/s and (a) Q = 30 L/min, (b) Q = 20 L/min, and (c) Q = 10 L/min.

View larger version (35K): [in a new window]   Fig. 7. Chamber effect on soil temperature at two depths for two soil surface water contents.