Non-destructive visualization of infiltration using electrical resistivity tomography

Year, pages: 2016, 51 - 64

Water infiltration into soil profile after the rainfall event is the decisive process at catchment runoff generation. Geophysical measurements of electrical resistivity tomography based on the relation of electrical resistivity on soil water content allow the indirect monitoring of water movement velocity and pathways in soil during infiltration. The measurements are performed without the disturbance of the site natural state. The repeated measurements of electrical resistivity vertical cross-sections with detailed spatial resolution were performed at short time lapse at the selected profiles. The measurements validated very fast response of water content to rainfall event within the upper 10 cm soil horizon as well as its consecutive decrease due to percolation into deeper horizons. The measurements performed at hillslope site established the lateral subsurface flow within the superficial soil horizon. The spatially nonuniform flow was evident at all the performed measurements despite of relatively homogeneous soil environment.

Kostka, Z., Holko, L. 2016. Non-destructive visualization of infiltration using electrical resistivity tomography. In Acta Hydrologica Slovaca, vol. 17, no.1, pp. 51-64. 2644-4690.

Kostka, Z., Holko, L. (2016). Non-destructive visualization of infiltration using electrical resistivity tomography. Acta Hydrologica Slovaca, 17(1), 51-64. 2644-4690.