Searching for the Caves by the Method of GPR

In the summer of 2015 geophysical surveys by GPR in the settlement area, located in the beam Berman (Sevastopol) have been carried out. Research task - identifying underground cavities along the southwestern slope of the beam. Field work was performed by georadar “OKO-2” with the antenna unit AB-250. At the initial stage it was carried out experimental and methodological work on the known cavities. According to the results of work it was identified the main features of voids. Then GPR works were carried out on a long reconnaissance profiles and small detailed areas. Analysis of radarograms showed that in the particular circumstances underground cavity characterized by reversed polarity of a signal reflected from the roof of the cavity, compared with the direct transmission signal. All radarograms clearly manifested only roof cavities, significant reflection from the “floor” is recorded only in the case of the known wide cave. Within the detailed site 1 identified and delineated underground cavity. All the other anomalies in the investigated area require further study. The survey revealed anomalies, presumably associated with unknown underground passages. These anomalies require further study.