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Abstract:

The effect produced by a sharp discontinuity in the upper boundary of the conductosphere is analysed in order to evaluate the distortions introduced in geomagnetic variation profiles in the long-period range of the spectra. To do so, a conformal mapping method is applied and the results are compared with the ones obtained in the case of lateral homogeneity. This model is also applied to interpret the internal part of the geomagnetic daily variations at the equatorial zones of Peru and central Africa. © 1989.

Registro:

Documento: Artículo
Título:Distortions in long-period geomagnetic variations owing to deep electrical inhomogeneities
Autor:Osella, A.M.; Colombo, E.
Filiación:Departmento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 1, 1428 Buenos Aires, Argentina
Palabras clave:conductosphere; conformal mapping method; discontinuity; distortion; electrical inhomogeneity; geomagnetic variation profile; Africa(Central); Peru
Año:1989
Volumen:55
Número:1-2
Página de inicio:31
Página de fin:36
DOI: http://dx.doi.org/10.1016/0031-9201(89)90231-8
Título revista:Physics of the Earth and Planetary Interiors
Título revista abreviado:Phys. Earth Planet. Inter.
ISSN:00319201
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v55_n1-2_p31_Osella

Referencias:

  • Adam, Tectonic effects in the magnetotelluric field and their numerical modelling (1987) Gerlands Beitr. Geophys., 96, pp. 17-31
  • Chapman, The equatorial electrojet as detected from the abnormal electric current distribution above Huancayo, Peru, and elsewhere (1951) Arch. Meteorol. Geophys. Bioklimatol., 4, pp. 368-390. , Ser. A
  • Duahu, Osella, Depth of the conducting layer in central Africa (1984) Journal of geomagnetism and geoelectricity, 36, pp. 113-120
  • Duhau, Osella, Evidence of mutual induction between the ionosphere and the earth at equatorial latitudes (1985) Journal of Geophysical Research, 90, pp. 4434-4438
  • Osella, Duhau, The effect of the depth of the non-conducting layer on the induced magnetic field at the Peruvian dip equator (1983) J. Geomagn. Geoelectr., 35, p. 245
  • Osella, Duhau, Analysis of the effect produced by lateral inhomogeneities in the mantle at equatorial latitudes (1985) Journal of geomagnetism and geoelectricity, 37, pp. 531-540
  • Osella, Duhau, Moyano, Estudio de la anomalía en la conductividad terrestre en la zona ecuatorial africana (1986) Geoacta, 13 (2), pp. 291-300
  • Osella, Duhau, Moyano, Effects produced by the conductosphere in the magnetotelluric sounding (1986) Communication to the XIV Meeting of the Argentine Geophysical Association, , Mendoza, Argentina
  • Price, The theory of magnetotelluric methods when the source field is considered (1962) Journal of Geophysical Research, pp. 1907-1918
  • Roberts, The deep electric structure of the Earth (1986) Geophys. J. R. Astron. Soc., 85, pp. 583-600
  • Saraf, Negi, Cerv, Magnetotelluric response of a laterally inhomogeneous anisotropic inclusion (1986) Phys. Earth Planet. Inter., 43, pp. 196-198

Citas:

---------- APA ----------
Osella, A.M. & Colombo, E. (1989) . Distortions in long-period geomagnetic variations owing to deep electrical inhomogeneities. Physics of the Earth and Planetary Interiors, 55(1-2), 31-36.
http://dx.doi.org/10.1016/0031-9201(89)90231-8
---------- CHICAGO ----------
Osella, A.M., Colombo, E. "Distortions in long-period geomagnetic variations owing to deep electrical inhomogeneities" . Physics of the Earth and Planetary Interiors 55, no. 1-2 (1989) : 31-36.
http://dx.doi.org/10.1016/0031-9201(89)90231-8
---------- MLA ----------
Osella, A.M., Colombo, E. "Distortions in long-period geomagnetic variations owing to deep electrical inhomogeneities" . Physics of the Earth and Planetary Interiors, vol. 55, no. 1-2, 1989, pp. 31-36.
http://dx.doi.org/10.1016/0031-9201(89)90231-8
---------- VANCOUVER ----------
Osella, A.M., Colombo, E. Distortions in long-period geomagnetic variations owing to deep electrical inhomogeneities. Phys. Earth Planet. Inter. 1989;55(1-2):31-36.
http://dx.doi.org/10.1016/0031-9201(89)90231-8