NORMALIZATION OF THE FIELD OF THE COMPLEX INDEX FUNCTION IN THE REGIME OBSERVATIONS AT LANDSLIDE-PRONE AREAS

The specificity of the function of a complex index (FCI) is that the average value on the area of research is always equal to zero. Therefore any change of values of FCI in some part of the area (emerging of a new anomaly) leads to a change of values in another part. Thus we have no data to objectively compare a complex of methods used in landslide processes research carried out in different times. To fill this gap, a technique of normalizing the field of FCI by bringing it to the same background values is suggested, which allows to compare objectively the level of anomalies relatively to the background. The final results of normalizing the field of FCI are presented as maps of the criterion of landslide development probability for each stage.