Linearization of the Sobolev and Babeyko's formulae for transformation of P-wave velocity to density in the Carpathian-Pannonian Basin region

Csicsay, Kristián; Bielik, Miroslav; Mojzeš, Andrej; Speváková, Eva; Kytková, Bibiána; Grinč, Michal

doi:10.2478/v10126-012-0002-y

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Besides this cooperation I was a member in the other projects concerning my previous research of the Turčianska Kotlina Basin. I published in cooperation another scientific paper as a first author in the journal Contribution to Geophysics and Geodesy (Grinč et al, 2010), another one as a side author in the same journal (Csicsay et al, 2012) and in the A rank journal the Geologica Carpathica (Bielik et al, 2013).…”

Section: Prefacementioning

confidence: 99%

Lithospheric structure in Central Europe: Integrated geophysical modelling

Grinč

Zeyen

Bielik

et al. 2013

Journal of Geodynamics

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The main aim of this thesis is to gain new knowledge about the lithospherical structure and tectonics of the Carpathian-Pannonian Basin region. We applied three different methods: 1D automatic modelling, 2D integrated geophysical modelling and 3D inversion to achieve this goal. These methods are similar concerning the used databases but differ by used processing and interpretation. At first we apply 1D automatic modelling to get a very first overview of the studied region. Secondly, we apply 2D integrated modelling of the lithosphere which combines the interpretation of surface heat flow, geoid, gravity, and topography data in the Carpathian-Pannonian Basin region and surrounding areas. This approach is able to constrain the complicated lithospheric structures of the studied region better than interpreting each data set on its own. We present four 2D integrated models of the lithosphere in the Carpathian-Pannonian Basin region and surrounding areas. Finally, based on the 3D Inversion algorithm, we present the geophysical models of the lithosphere in the Carpathian-Pannonian region. The algorithm returns the density structure of the lithosphere from joint inversion of free air gravity, geoid and topography data based on a Bayesian approach. The models are based on different input data sets and constrained by different a priori data. Based on our modelling we cannot confirm the extreme thinning (less than 70 km) of the Pannonian Basin lithosphere proposed by other authors. On the other hand, the results show the increasing trend of the lithospherical thickness of the Carpathian Arc from the Western Carpathians toward the Eastern Carpathians which confirms the previous theories about the propagation of subduction process. We got some controversial results in the area of the Southern Carpathians. The results based on 3D inversion show extremely thin lithosphere in the area; on the other hand, the results based on 2D integrated modelling do not support such thinning. However both methods indicate that it is probable that the Moesian Platform is bend and underthrusted underneath the Southern Carpathians. The southeastern edge of the Pannonian Basin based on 3D inversion shows unexpected and surprisingly thin lithosphere. Since the area is quite large, we could exclude an effect of flexure, therefore this area might be potentially interesting for further investigation.

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Section: Prefacementioning

confidence: 99%

Lithospheric structure in Central Europe: Integrated geophysical modelling

Grinč

Zeyen

Bielik

et al. 2013

Journal of Geodynamics

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“…For evaluation of the density data of the Neogene and Palaeogene sediments (Tables 1, 2 and Fig. 3) we used the data published, for example, in the papers of Eliáš and Uhman (1968), Dabrowski (1971Dabrowski ( , 1976, Husák (1977Husák ( , 1986, Tomek et al (1979Tomek et al ( ),Šefara et al (1987, Bielik (1988), Ibrmajer and Suk 1989;Bucha et al (1994), Szafián et al (1997), Šefara and Szabó (1997), Królikowski and Petecki (2001), Makarenko et al (2002), Zeyen et al (2002), Bielik et al (2005, Dérerová et al (2006), Ba la and Witek (2007), Csicsay (2010), Csicsay et al (2012), Grinč et al (2013), Alasonati Tašárová et al (2008, 2009, 2016. We also take into account the results and knowledge published by Nafe and Drake (1957 , Table 1.…”

Section: Methodsmentioning

confidence: 99%

Determination of rock densities in the Carpathian-Pannonian Basin lithosphere: based on the CELEBRATION 2000 experiment

Šimonová

Bielik

2016

Contributions to Geophysics and Geodesy

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The international seismic project CELEBRATION 2000 brought very good information about the P-wave velocity distribution in the Carpathian-Pannonian Basin litosphere. In this paper seismic data were used for transformations of in situ P-wave velocities to in situ densities along all profiles running across the Western Carpathians and the Pannonian Basin: CEL01, CEL04, CEL05, CEL06, CEL09, CEL11 and CEL12. The calculation of rock densities in the crust and lower lithosphere was done by the transformation of seismic velocities to densities using the formulae of Sobolev-Babeyko, Christensen-Mooney and in the lower lithosphere also by Lachenbruch-Morgan’s formula. The density of the upper crust changes significantly in the vertical and horizontal directions, while the interval ranges of the calculated lower crust densities narrow down prominently. The lower lithosphere is the most homogeneous - the intervals of the calculated densities for this layer are already very narrow. The average density of the upper crust (ρ̅ = 2.60 g · cm−3) is the lowest in the Carpathian Foredeep region. On the contrary, the highest density of this layer (ρ̅ = 2.77 g · cm−3) is located in the Bohemian Massif. The average densities ρ̅ of the lower crust vary between 2.90 and 2.98 g · cm−3. The Palaeozoic Platform and the East European Craton have the highest density (ρ̅ = 2.98 g · cm−3 and ρ̅ = 2.97 g · cm−3, respectively). The lower crust density is the lowest (ρ̅ = 2.90 g · cm−3) in the Pannonian Basin. The range of calculated average densities ρ̅ for the lower lithosphere is changed in the interval from 3.35 to 3.40 g · cm−3. The heaviest lower lithosphere can be observed in the East European Craton (ρ̅ = 3.40 g · cm−3). The lower lithosphere of the Transdanubian Range and the Palaeozoic Platform is characterized by the lowest density ρ̅ = 3.35 g · cm−3.

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