Modified electrical survey for effective leakage detection at concrete hydraulic facilities

The pattern of colored matrix that is created from tha data of a D-Lux array. (a) The potential distribution around the homogeneous weir and the D-Lux view that displays the homogeneous potential distribution at A, B and C in this case. (b) The potential distribution around the heterogeneous weir and the D-Lux view that displays the potential difference of A, B and C at that time. The black line box of each right figure shows the changes owing to potential variation.123