Constrained Inversion of Helicopterborne EM Data

A036 CONSTRAINED INVERSION OF HELICOPTERBORNE EM DATA Summary 1 Helicopterborne EM data from two surveys in Sweden have been inverted into two-layered models. The surveys were carried out in areas of resistive crystalline rock. The leveling of the data was aided by geophysical measurements on the ground. Ground truth information was also used as constraints during inversion. The data was treated in a regular grid over the survey area and a two-layer model for each grid node was produced. These models were stitched together to give a continuos description of the bedrock resistivity and the soil cover resistivity and thickness