On potential use of natural electromagnetic emissions in ELF, VLF and HF radio bands at active landslide areas: Preliminary results from Vinohrady nad Váhom site (Slovakia)

The use of natural electromagnetic (EM) emissions in extreme low frequency (ELF) and very (VLF) radio bands for monitoring predicting landslide activity is examined. approach based on measuring EM using receivers subsequent correlation their intensity with the amount character deformation landslide. There are several sources rock environment, but it mostly piezoelectric impulse quartz grains during or sliding movements within masses. Deformation was observed studied body. Deformations were measured a geodetic band network stakes, which installed before re-measured after recording signal attributed to geodynamic activity. A method direct entire VLF spectrum sound cards such as AD converters applied. So far, candidate signals captured two permanent stations have been built.