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Pre-failed landslides occurring in quasi-homogeneous soils are difficult to be characterized from the standpoint of their partially formed failure surface geometry. The paper presents the combined geotechnical investigation methods (fully sampled boreholes with laboratory tests, in-situ dynamic probing and so on) giving a very accurate point-wise description of the soil, with geophysical methods (electric resistivity tomography ? ERT, seismic refraction and multichannel analysis of surface waves ? MASW) providing ...

The article presents selected results obtained by using of electrical resistivity tomography method in searching of different, mostly anthropogenic objects at shallow depths. The anticipated depth of the object is up to 20m. These objects are relatively small with dimensions up to maximum in first meters in diameter. In terms of the shapes of these objects it is possible to define two groups. The first group consists mainly of the objects whose shape can be replaced by a vertical or horizontal cylinder. The second...