Microgravimetric Investigations for Shallow Depth Cavity Detection

P025 Microgravimetric investigations for shallow depth cavity detection Abstract 1 Microgravimetric measurements have been conducted in the suburban territory of Budapest Hungary in order to map a shallow (~15 m deep) extensive subsurface cavity system. The site of study is the public park Ohegy an earlier recultivated limestone quarry terrain where collapse of cavities occurred. A high-precision survey was carried out by the Eotvos Lorand Geophysical Institute consisted of 1700 gravity stations with small station distance (2 and 3 m). As the spatial wavelengths of the small size targets are much shorter than that of the regional field and the