Application of Lateral Constraint Inversion to CSAMT Data

摘要

Lateral Constraint Inversion (LCI) method has been applied successfully to inverse the direct currentrndata, transient electromagnetic data and the helicopter electromagnetic data. However, it hasn’t been used inrnprocessing the data of control source audio-frequency electromagnetic (CSAMT) method. In the paper, werntry to apply it to CSAMT data. A weight matrix are introduced to improve the convergence of the LCIrnmethod, it makes the sensitivity of the data to model parameter uniform. LCI method is applied to a coalrnmine CSAMT data collected in 2004. Comparing to the 1D smooth inversion result from 2004, thernre-inversion section is modified and fit more to the known geology information. The result show thernweighted LCI method can be used to inverse the layered CSAMT data.