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A Simple 2D Transient HT Example (estimate K)

This animation shows the results of a two-dimensional transient hydraulic tomography inversion, to find the hydraulic conductivity (K) of the domain.  In the figure on the right, the squares represent observation locations (i.e., monitoring wells), and the red circles represent the location of the excitation (i.e., pumping well).

Each frame represents an entire “pumping test” where the location of the red dot is pumped and pressure measurements are recorded through time at each of the square locations.  Notice that the estimated K distribution (right) gets closer to the true distribution with each additional test location.  The use of excitations at different points to resolve a better image of the whole, using inversion is the concept of tomography.  For an explanation of the concept of tomography in terms of resistivity surveys, see the ERT page.

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