Lake Travis Survey

Inverted resistivity model from Lake Travis, Austin, Texas.  Cooler colors represent regions of lower resistivity, and warmer colors represent regions of higher resistivity.  The water-bottom begins in the blue-to-green resistivity zones.  Due to the motion of the boat, the effective spacing between electrodes is estimated to be 1 meter.  The inverted resistivity model is shown after 3 iterations, with a root-mean-square error of 3.7 percent.