Electrical Conductivity of the Earth's Mantle in the «Academic Vernadsky» Station region
DOI:
https://doi.org/10.24028/gzh.0203-3100.v36i5.2014.111577Abstract
In the regional magnetovariational sounding method on the base of relationship between spectra of vertical and horizontal geomagnetic field variations and a priori known structure of the field source, the medium response function is calculated, which interpretation allows to obtain the subsurface conductivity distribution model. Hourly mean values of geomagnetic field components acquired by "Argentine Islands" (AIA) observatory with 13 years of data (1996—2008) were used for calculations. The 1D conductivity distribution model of medium for the "Academic Vernadsky" Station region was obtained as a result of geoelectrical interpretation, which was carried out by numerical methods.
References
Логвинов И.М., Семенов В.Ю. Оценка глубинных геоэлектрических параметров в районе обсерваторий Корец и Ястребовка (Украина). Геофиз. журн. 2000. Т. 22. № 3. С. 90—93.
Adam A., Landy K., Nagy Z., 1989. New evidence for the distribution of the electric conductivity in the Earth's crust and upper mantle in the Pannonian basin as a hotspot. Tectonophysics 164, 361—368.
Banks R., 1969. Geomagnetic variations and the electrical conductivity of the upper mantle. Geophys. J. Roy. Astron. Soc. 17, 457—487.
Chapman S., Price A., 1930. The electric and magnetic state of the interior of the earth as inferred from terrestrial magnetic variations. Phil. Trans. Roy. Soc. Lond, A, 229, 427—460.
Clarke J., Gamble T. D., Goubau W. M., Koch R. H., Miracky R.F., 1983. Remote-reference magnetotellurics: Equipment and procedures. Geophys. Prospect. 31, 149—170.
Constable S.C., Parker R.L., Constable C.G., 1987. Occam's inversion: a practical algorithm for the inversion of electromagnetic data. Geophysics 52, 289—300.
Egbert G., Booker J., 1992. Very long period magnetotellurics at Tucson Observatory: Implications for mantle conductivity. J. Geophys. Res. 97, 15099—15112.
Fujii I., Schultz A., 2002. The 3D electromagnetic response of the Earth to ring current and auroral oval excitation. Geophys. J. Int. 151, 689—709.
Jozwiak W., Semenov V.Yu., 1998. Deep Geoelect- rical structure estimation in the West Antarctic. Acta Geophys. Pol. 46(1), 61—67.
Olsen N., 1999. Long-period (30 days-1year) electromagnetic sounding and the electrical conductivity of the lower mantle beneath Europe. Geophys. J. Int. 138, 179—187.
Olsen N., 1998. The electrical conductivity of the mantle beneath Europe derived from C-response from 3 h to 720 h. Geophys. J. Int. 133, 298— 308.
Parker R.L., 1980. The inverse problem of electromagnetic induction: existence and construction of solutions based on incomplete data. J. Geophys. Res. 85, 4421—4428.
Parker R.L., Whaler K.A., 1981. Numerical method for establishing solution to the inverse problem of electromagnetic induction. J. Geophys. Res. 86, 9574—9584.
Roberts R.G., 1986. The deep electrical structure of the Earth. Geophys. Roy. Astron. Soc. 85(3), 563—600.
Schmucker U., 1999. A spherical harmonic analysis of solar daily variations in the years 1964— 1965: response estimates and source fields for global induction — II. Results. Geophys. J. Int. 136, 455—476.
Schultz A., Kurtz R.D., Chave A.D., Jones A.G., 1993. Conductivity Discontinuities in the Upper Mantle beneath a Stable Craton. Geophys. Res. Lett. 20(24), 2941—2944.
Schultz A., Larsen J.C., 1987. On the electrical conductivity of the mid-mantle-I. Calculation of equivalent scalar magnetotelluric response functions. Geophys. J. Roy. Astron. Soc. 88, 733—761.
Semenov V.Yu., 1998. Regional Conductivity Structures of the Earth's Mantle: Publications of the Institute of Geophysics Polish Academy of Sciences C-65 (302), 122 p.
Semenov V.Yu., Jozwiak W., 1999. Model of the geoelectrical structure of the mid- and lower mantle in the Europe-Asia region. Geophys. J. Int. 138, 549—552.
Su W.-J., Dziewonski A.M., 1992. On the scale of mantle heterogeneity. Phys. Earth Planet. Int. 74, 29—54. doi: 10.1016/0031-9201 (92)90066-5.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2020 Geofizicheskiy Zhurnal
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
