Earth's mantle conductivity structure estimation at Panagurishte observatory region by magnetovatiational data

2011;
: 155-157
Authors:
1
Carpathian branch of Subbotin Institute of geophysics of NAS of Ukraine; Lviv Polytechnic National University (SD ICSIT)

The regional magneto-variational sounding method (aka Z/H method) was used for estimation of the Earth's mantle conductivity model at the Panagurishte (PAG) observatory region. A magneto-variational transfer function is calculated on the base of the relationship of vertical to horizontal geomagnetic field spectra components recorded on the Earth surface and priori assumptions about a field source structure. Inversions of the transfer function allow to obtain the one dimensional conductivity model.

  1. Logvinov I.M., Semenov V.Ju. Ocenka glubinnyh geojelektricheskih parametrov v rajone observatorij Korec i Jastrebovka (Ukraina) // Geofiz. Zhurn. – 2000. – 22, – № 3. – S. 90–95
  2. Banks R. Geomagnetic variations and the electrical conductivity of the upper mantle // Geophysical Journal of the Royal Astronomical Society. – 1969. – 17. – P. 457-487
  3. Constable S.C., Parker R.L., Constable C.G. Occam's inversion: a practical algorithm for the inversion of electromagnetic data //Geophysics. – 1987. – 52. – P.289 –300
  4. Fujii I., Schultz A. The 3D electromagnetic response of the Earth to ring current and auroral oval excitation // Geophys. J. Int. – 2002. – 151. – P. 689–709.
  5. Parker, R.L., The inverse problem of electromagnetic induction: existence and construction of solutions based  on  incomplete data. // J. Geophys. Res. – 1980. – 85. – P. 4421 – 4428.
  6. Parker R.L., Whaler K.A. Numerical method for establishing solution to the inverse problem of electromagnetic induction // J. Geophys. Res. – 1981. – 86. – P. 9574 – 9584
  7. Schultz A., Larsen J, C. On the electrical conductivity of the mid-mantle – I. Calculation of equivalent scalar magnetotelluric response functions // Geophys. J. R. Astr. Soc. – 1987. – 88, – P. 733–761
  8. Semenov V. Yu. Regional Conductivity Structures of the Earth's Mantle – Wrszawa: Publications of the Institute of Geophysics Polish Academy of Sciences C-65(302), – 1998. – 122 p.