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Abstract:

The internal part of the geomagnetic daily variations at the Peruvian dip equator shows the presence of an anomaly in the earth conductivity. This anomaly is further investigated in the present work using the external and internal parts of those variations, found in a previous work. The field induced at the ground by the current system determined from the external part is computed assuming a simple conductivity model. The depth of the non-conducting layer,/?, is then found by fitting the results with the internal part. This procedure makes it possible to remove the usual assumption that the quotient between the internal and external parts of the planetary field is 0.4 and to find its actual value which, in the model, is a function of p. © 1983, Society of Geomagnetism and Earth, Planetary and Space Sciences. All rights reserved.

Registro:

Documento: Artículo
Título:The Effect of the Depth of the Non-Conducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator
Autor:Osella, A.M.; Duhau, S.
Filiación:Dpto. de FISICA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon N° 1, Ciudad Universitaria, Buenos Aires, Argentina
Año:1983
Volumen:35
Número:7
Página de inicio:245
Página de fin:253
DOI: http://dx.doi.org/10.5636/jgg.35.245
Título revista:Journal of geomagnetism and geoelectricity
Título revista abreviado:J. Geomagn. Geoelectr.
ISSN:00221392
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221392_v35_n7_p245_Osella

Referencias:

  • Aldrich, L.T., Bannister, J.R., Del Pozo, S., Salgueiro, R., Beach, L., Electrical conductivity studies in South America: Chile-Boliva (1975) Carnegie Inst., p. 292. , Washington Yearbook
  • Cox, C., Filloux, J., Two dimensional numerical models of the California electromagnetic coastal anomaly (1974) J. Geomag. Geoelectr., 26, p. 257
  • Davis, T.N., Burrows, K., Stolarik, J., A latitude survey of the equatorial electrojet with rocket-borne magnetometers (1967) J. Geophys. Res., 73, p. 1845
  • DuHAU, S., Osella, A.M., A correlation between measured E-region current and geomagnetic daily variation at equatorial latitudes (1982) J. Geomag. Geoelectr., 34, p. 213
  • DuHAU, S., Romanelli, L., Electromagnetic induction at the South American Geomagnetic Equator as determined from measured ionospheric currents (1979) J. Geophys. Res., 84, p. 1849
  • EcKHARDT, D., Earner, K., Madden, T., Long period magnetic fluctuations and mantle electrical conductivity estimates (1963) J. Geophys. Res., 68, p. 6279
  • FoRBUSH, S., Casaverde, M., Equatorial Electrojet in Perú (1961) Carnegie Inst. Washington, Publ., p. 620
  • Honkura, Y., Electrical conductivity anomalies in the earth (1978) Geophys. Surveys, 3, p. 225
  • Onwumechilli, C.A., (1967) Physics of Geomagnetic Phenomena, 1, p. 426. , edited by Matsushita and Campbell
  • Sampath, S., Sastry, T.S.G., Depth of non-conducting layer in the Indian Ocean region around Thumba, derived from in situ investigations of Equatorial Electrojet-II (1979) J. Geomag. Geoelectr., 31, p. 381
  • Schmucker, U., Conductivity anomalies with special reference to the Andes (1969) The Application of Moderm Physics to the Earth and Planetary Interiors, p. 125. , edited by S.K. Runcorn, Wiley-Intersciencie, London
  • ScHUMAN, B.M., Rocket measurement of the Equatorial Electrojet (1970) J. Geophys. Res., 75, p. 3889

Citas:

---------- APA ----------
Osella, A.M. & Duhau, S. (1983) . The Effect of the Depth of the Non-Conducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator. Journal of geomagnetism and geoelectricity, 35(7), 245-253.
http://dx.doi.org/10.5636/jgg.35.245
---------- CHICAGO ----------
Osella, A.M., Duhau, S. "The Effect of the Depth of the Non-Conducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator" . Journal of geomagnetism and geoelectricity 35, no. 7 (1983) : 245-253.
http://dx.doi.org/10.5636/jgg.35.245
---------- MLA ----------
Osella, A.M., Duhau, S. "The Effect of the Depth of the Non-Conducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator" . Journal of geomagnetism and geoelectricity, vol. 35, no. 7, 1983, pp. 245-253.
http://dx.doi.org/10.5636/jgg.35.245
---------- VANCOUVER ----------
Osella, A.M., Duhau, S. The Effect of the Depth of the Non-Conducting Layer on the Induced Magnetic Field at the Peruvian Dip Equator. J. Geomagn. Geoelectr. 1983;35(7):245-253.
http://dx.doi.org/10.5636/jgg.35.245