Artículo
Abstract:
In a previous work, we presented the analysis and interpretation of geophysical data acquired at the Floridablanca archaeological site in Patagonia, Argentina. The electromagnetic induction method (EMI) was used to detect and localize the anomalous zone of interest quickly. Afterwards, a quantitative characterization of the structure responsible for this anomaly was achieved by inverting geoelectrical data. In this work, we re-analyse the EMI data to discover whether it could also provide us with quantitative information about our target, which exhibits a resistive signature with respect to the host medium. First, an alternative visualization of the data is carried out; this allows us to detect some features of the anomaly that could not be distinguished before. It also makes clear which of the configurations used in the data acquisition exhibits the best sensitivity and resolution. The EMI data corresponding to the anomalous zone are then adjusted with a trial-and-error procedure, using a 2D forward modelling method based on a Raleigh-Fourier approach. The response of two adobe walls with a tile deposit in between them is calculated and the resulting model shows good agreement with the model obtained from the inversion of the geoelectrical data. Also, the synthetic response of two adobe walls without the tile deposit is calculated; we find that this response is different and the data cannot be adjusted with this model. We conclude that the EMI method is appropriate for discriminating different types of resistive structure and that it can be used to obtain quantitative information when 2D modelling is performed. © 2006 European Association of Geoscientists & Engineers.
Registro:
| Documento: | Artículo |
| Título: | EMI data from an archaeological resistive target revisited |
| Autor: | Lascano, E.; Martinelli, P.; Osella, A. |
| Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pab. 1-1428, Buenos Aires, Argentina |
| Año: | 2006 |
| Volumen: | 4 |
| Número: | 6 |
| Página de inicio: | 395 |
| Página de fin: | 400 |
| Título revista: | Near Surface Geophysics |
| Título revista abreviado: | Near Surf. GeoPhys. |
| ISSN: | 15694445 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v4_n6_p395_Lascano |
Referencias:
- Chamberlain, A., Sellers, W., Proctor, Ch., Coard, R., Cave detection in limestone using ground penetrating radar (2000) Journal of Archaeological Science, 27, pp. 957-964
- Huang, H., Won, I.J., Electromagnetic detection of buried metallic objects using quad-quad conductivity (2004) Geophysics, 69, pp. 1387-1393
- Lascano, E., Osella, A., de la Vega, M., Buscaglia, S., Senatore, X., Lanata, J.L., Geophysical prospection at Floridablanca archaeological site, San Julián Bay, Argentina (2003) Archaeological Prospection, 10, pp. 1-18
- Martinelli, P., Osella, A., Lascano, E., Modelling broadband electromagnetic induction response of 2D structures (2004) IEEE Transactions on Geoscience and Remote Sensing, , (submitted)
- Oldenburg, D.W., Li, Y., Inversion of induced polarization data (1994) Geophysics, 59, pp. 1327-1341
- Oldenburg, D.W., McGillivray, P.R., Ellis, R.G., Generalized subspace method for large scale inverse problems (1993) Geophysics Journal International, 114, pp. 12-20
- Osella, A., de la Vega, M., Lascano, E., 3D electrical imaging of an archaeological site using electric and electromagnetic methods (2004) Geophysics, 70 (4), pp. 101-107
- Senatore, M.X., Cardillo, M., Bianchi Villelli, M., Buscaglia, S., Archaeology in Floridablanca: First results (in Spanish) (2000) Proceedings of the 3rd Americanists Congress, pp. 201-225. , Argentine Society of Americanists, Salvador University, Buenos Aires
- Won, I.J., Keiswetter, D.A., Fields, G.R.A., Sutton, I.C., GEM-2: A new multifrequency electromagnetic sensor (1996) Journal of Environmental and Engineering Geophysics, 1, pp. 129-138
Citas:
---------- APA ----------
Lascano, E., Martinelli, P. & Osella, A. (2006) . EMI data from an archaeological resistive target revisited. Near Surface Geophysics, 4(6), 395-400.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v4_n6_p395_Lascano [ ]
---------- CHICAGO ----------
Lascano, E., Martinelli, P., Osella, A. "EMI data from an archaeological resistive target revisited" . Near Surface Geophysics 4, no. 6 (2006) : 395-400.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v4_n6_p395_Lascano [ ]
---------- MLA ----------
Lascano, E., Martinelli, P., Osella, A. "EMI data from an archaeological resistive target revisited" . Near Surface Geophysics, vol. 4, no. 6, 2006, pp. 395-400.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v4_n6_p395_Lascano [ ]
---------- VANCOUVER ----------
Lascano, E., Martinelli, P., Osella, A. EMI data from an archaeological resistive target revisited. Near Surf. GeoPhys. 2006;4(6):395-400.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v4_n6_p395_Lascano [ ]
