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About the so-called “magnetic tellurics” — Comment on “long period electromagnetic induction vectors in a sedimentary back-arc basin” (Carpatho-Pannonian Basin) by A Ádám and A Koppán

Annual, monthly, weekly and diurnal distribution of Carpathian (1964–2004) and M>7 earthquakes worldwide (1900–2004) and seeking for the effect of the Moon

Seismicity of the Western-Carpathians

Acta Geodaetica et Geophysica Hungarica : Volume 40, Issue 2, May 2005

Acta Geodaetica et Geophysica Hungarica : Volume 40, Issue 1, March 2005

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Acta Geodaetica et Geophysica Hungarica : Volume 38

Acta Geodaetica et Geophysica Hungarica : Volume 37

Acta Geodaetica et Geophysica Hungarica : Volume 36

Acta Geodaetica et Geophysica Hungarica : Volume 35

Acta Geodaetica et Geophysica Hungarica : Volume 34

Acta Geodaetica et Geophysica Hungarica : Volume 33

Acta Geodaetica et Geophysica Hungarica : Volume 32

Tectonic weak zones determined by magnetotellurics along the CEL-7 deep seismics profile

Content Provider	Springer Nature Link
Author	Szarka, L. Novák, A. Ádám, A.
Copyright Year	2005
Abstract	In the contact zone of three tectonic units (Pannonian Basin, Eastern Alps and Dinarides), in a complicated — basin and range — geological situation magnetotelluric deep soundings were carried out along a 140 km long profile (CELEBRATION-007) with a site distance of 2 km. In this area deep fractures of the Basin run together in NE-SW direction.In the paper various magnetotelluric images completed with gravity and magnetics are provided. In the traditional magnetotelluric approach, the structural indication of the TM and TE mode magnetotelluric sounding curves is clearly separated. The TM mode curves well express the resistive basement structure, already known from dense boreholes and detailed seismic exploration. The TE mode curves on the other hand (together with the induction vectors of very low values) definitely show the conductive root of the deep fractures, where the ductile materials are assumed to be raised into a very shallow depth of about of 8 km. The high heat flow of the area (about 100 mW/m$^{2}$), which explains the shallowness of the conductive asthenosphere is also well indicated. The asthenosphere has more Alpine character in the NW part of the profile (its depth is about 80 km) and it is at smaller (about 50 km) depth in the SE part of the profile, due to the higher heat flow near the extensional Drava Basin. The induction vectors are also separated into two characteristic regions, according to their general direction, influenced by both local and remote effects.A strong correlation is shown between magnetotelluric and gravity inversion results. A joint interpretation of magnetotelluric, gravity, magnetic results provide a quite comprehensive interpretation about the deep geological structures in SW-Hungary.
Starting Page	413
Ending Page	430
Page Count	18
File Format	PDF
ISSN	12178977
Journal	Acta Geodaetica et Geophysica Hungarica
Volume Number	40
Issue Number	3-4
e-ISSN	15871037
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-27
Publisher Institution	Quarterly of the Hungarian Academy of Sciences
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	conductive asthenosphere inversion sedimentary basin magnetotelluric sounding deep fracture Geophysics/Geodesy electric conducting zone
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geology Geophysics

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Tectonic weak zones determined by magnetotellurics along the CEL-7 deep seismics profile

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