Characterizing Soil Moisture Variations in the Unsaturated Zone

Vadose zone soil moisture variationWe are using electrical resistivity tomography to image the dynamic nature of soil moisture, and coupling this with high resolution models to better understand transpiration dynamics and unsaturated flow. We are using time-lapse hydrogeophysical tools to characterize soil moisture variability beneath a range of vegetation types. Those tools include 2D and 3D electrical resistivity tomography (ERT), and ground-penetrating radar (GPR).

We will then combine our measurements with detailed site characterization, point measurements of soil temperature and moisture, and numerical models of hydrological and plant processes to quantify root-zone moisture dynamics with an unprecedented level of detail.

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