Artículo
Osella, A.; Favetto, A.; Martinelli, P. "Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina" (1993) Pure and Applied Geophysics PAGEOPH. 141(1):139-156
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Abstract:
Regional studies of Sq variations measured at five permanent observatories in Argentina were performed to estimate the distribution of the electrical conductivity of the upper and mid-mantle, reaching a depth of approximately 800 km. After separating the total field into its parts of external and internal origin, the in duced field was modeled, applying two-dimensional techniques. Additionally, induction arrows and an equivalent apparent resistivity curve were calculated A north-south heterogeneity was detected, showing an increase of the conductivity of the shallower layers north of the profile, which may be related to the presence of high volcanic activity in the area. © 1993 Birkhäuser Verlag.
Registro:
| Documento: | Artículo |
| Título: | Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina |
| Autor: | Osella, A.; Favetto, A.; Martinelli, P. |
| Filiación: | Departmento de Física Facultad de Ciencias, Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 1, Buenos Aires, 1428, Argentina |
| Palabras clave: | Lateral electrical heterogeneities; mantle conductivity in Argentina; Sq field |
| Año: | 1993 |
| Volumen: | 141 |
| Número: | 1 |
| Página de inicio: | 139 |
| Página de fin: | 156 |
| DOI: | http://dx.doi.org/10.1007/BF00876240 |
| Título revista: | Pure and Applied Geophysics PAGEOPH |
| Título revista abreviado: | PAGEOPH |
| ISSN: | 00334553 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00334553_v141_n1_p139_Osella |
Referencias:
- Berdichevsky, M., Zhdanov, M., (1984) Advanced Theory of Deep Geomagnetic Sounding, , Elsevier, N.Y
- Campbell, W.H., Schiffmacher, E.R., Upper Mantle Electrical Conductivity for Seven Subcontinental Regions of the Earth (1988) J. Geomag. Geoelectr., 40, pp. 1387-1406
- Everett, J.E., Hyndman, R.D., Geomagnetic Variations and Electrical Conductivity Structure in Southern Australia (1967) Phys. Earth Planet. Int., 1, pp. 24-34
- Jupp, D.L.B., Vozoff, K., Stable Iterative Methods for the Inversion of Geophysical Data (1975) Geophys. J. R. Astr. Soc., 42 (3), pp. 957-976
- Matsushita, S., Maeda, H., On the Geomagnetic Solar Quiet Daily Variation Field during the IGY (1965) J. Geophys. Res., 70 (11), pp. 315-338
- Osella, A.M., Duhau, S., The Effect of the Depth of the Nonconducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator (1983) J. Geomag. Geoelectr., 35, p. 245
- Osella, A. M., Favetto, A., and Martinelli, P. (1992), Sensitivity of the Geomagnetic Daily Variations to 2D Structures, Trends in Geophysics (in press); Osella, A. M., Favetto, A., and Van Zele, A. (1993a), Spectral Analysis of Geomagnetic Variations at Equatorial and Mid-latitudes, Geoacta (in press); Osella, A.M., Martinelli, P., Magnetotelluric Responses of Anisotropic Bidimensional Structures (1993) Geophys. J. Int., 115, pp. 819-828
- Osella, A. M., Pomposiello, C., Favetto, A., Sainato, C., and Martinelli, P. (1993b), Bidimensional Modeling of a Geothermal Anomaly in the Eastern Border of Aconquija Range, Acta Geod. Geophys. Mount. (in press); Schmucker, U., Anomalies of Geomagnetic Variations in the Southwestern United States (1964) Journal of geomagnetism and geoelectricity, 15, pp. 193-221
- Schultz, A., Larsen, J.C., On the Electrical Conductivity of the Mid-mantle. I. Calculation of Equivalent Scalar Magnetotelluric Response Functions (1987) Geophys. J. R. Astr. Soc., 88, pp. 733-761
Citas:
---------- APA ----------
Osella, A., Favetto, A. & Martinelli, P. (1993) . Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina. Pure and Applied Geophysics PAGEOPH, 141(1), 139-156.http://dx.doi.org/10.1007/BF00876240
---------- CHICAGO ----------
Osella, A., Favetto, A., Martinelli, P. "Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina" . Pure and Applied Geophysics PAGEOPH 141, no. 1 (1993) : 139-156.http://dx.doi.org/10.1007/BF00876240
---------- MLA ----------
Osella, A., Favetto, A., Martinelli, P. "Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina" . Pure and Applied Geophysics PAGEOPH, vol. 141, no. 1, 1993, pp. 139-156.http://dx.doi.org/10.1007/BF00876240
---------- VANCOUVER ----------
Osella, A., Favetto, A., Martinelli, P. Lateral heterogeneities in the upper and mid-mantle conductivity in Argentina. PAGEOPH. 1993;141(1):139-156.http://dx.doi.org/10.1007/BF00876240
