Received May 1992, revision accepted August 1993.
A gravimetric 3D Global inversion for cavity detection1
Article first published online: 27 APR 2006
Volume 42, Issue 2, pages 113–130, February 1994
How to Cite
Camacho, A.G., Vieira, R., Montesinos, F.G. and Cuéllar, V. (1994), A gravimetric 3D Global inversion for cavity detection. Geophysical Prospecting, 42: 113–130. doi: 10.1111/j.1365-2478.1994.tb00201.x
- Issue published online: 27 APR 2006
- Article first published online: 27 APR 2006
A gravimetric survey, covering a site 200 m square, was carried out in order to locate karstic cavities. After eliminating the regional trend using a polynomial fit, the residual is modelled by least-squares prediction. Correlated signals for several wavelengths are detected. The inversion of these anomalies is performed by a global 3D adjustment using spherical bodies as models. The adjustment is repeated in order to obtain a stable configuration. The results show the probable presence of a system of cavities and galleries. Data collected from boreholes and the subsequent appearance of sink-holes are consistent with the results.