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A gravimetric 3d global inversion for cavity detection

Camacho, A.G. and Viera, Ricardo and González Montesinos, Fuensanta and Cuellar, V. (1994) A gravimetric 3d global inversion for cavity detection. Geophysical Prospecting, 42 (2). pp. 113-130. ISSN 0016-8025

Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2478.1994.tb00201.x/pdf

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Abstract

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.


Item Type:Article
Uncontrolled Keywords:Gravity-Anomalies; Density; Bodies; Depth
Subjects:Sciences > Physics > Geophysics
ID Code:16041
Deposited On:24 Jul 2012 10:02
Last Modified:24 Jul 2012 10:02

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