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Título:
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A gravimetric 3d global inversion for cavity detection
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Autores:
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Camacho, A.G. ;
Viera, Ricardo ;
Montesinos, F. G. ;
Cuellar, V.
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Tipo de documento:
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texto impreso
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Editorial:
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Blackwell Science Ltd, 1994
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Geofísica
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Tipo = Artículo
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Resumen:
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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.
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