OPTIMITION OF LEAST SQUARES METHODS SMOOTH CONSTRAIN USING OCCAM’S INVERSION GEOELECTRIC RESISTIVITY DIPOLE-DIPOLE CONFIGURATION FOR ESTIMATION SLIP SURFACE

The volumes of the landslide depend on the depth of the slide surface. The depth of the slide surface can bepredicted by using the least squares inversion methods of data geoelectrical. Method of Least Squares Inversionof the data Geoelectrical cannot get smooth results. Based on the above, the aims was optimalitation leastsquaressmooth constrain inversion methods with Occam’s inversion for geoelectrical data and to determine thedepth and tilt angle of the slide surface in in Bukit Lantiak Padang . This exploratory study was use the methodGeoelectrical resistivity Dipole-Dipole configuration. The depth and tilt angle of the slide surface in BukitLantiak Padang was interpretated by combined Occam’s inversion with least-squares smooth constraininversion methods. The type of slip surface is translation slip with 33.450 tilt angle and 19.3 meters in depth.Research show that the result interpretation by used combined Occam inversion with least-squares smoothconstrain inversion methods more sharpness than least-squares smooth constrain inversion.